{"title":"Filters \u0026 Accessories","description":"","products":[{"product_id":"oxygen-iii-narrowband-filter-1-25-round-mounted-93623","title":"Celestron Oxygen III Narrowband Filter - 1.25\" Round Mounted - 93623","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Celestron Oxygen III Narrowband Filter - 1.25\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron OIII Narrowband Telescope Filter\u003c\/b\u003e isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black sky background and the faint photons of OIII light needed for detailed views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae, among other objects.\u003c\/p\u003e\n\u003cp\u003eEach \u003cb\u003eCelestron OIII Narrowband Telescope Filter\u003c\/b\u003e has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm This eliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology.\u003c\/p\u003e\n\u003cp\u003e(Psssst! If you have ever wondered how to see the Helix Nebula with your telescope, this is the way! ;)\u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron Oxygen III Narrowband Filter - 1.25\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIsolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlocks the rest of the overall spectrum of light\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e1.25\" round threaded cell design fits almost all standard 1.25\" telescope eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron Oxygen III Narrowband Filter - 1.25\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: OIII Narrowband\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 1.25\"\u003c\/p\u003e\n\u003cp\u003eConstruction: Threaded Aluminum Cell\u003c\/p\u003e\n\u003cp\u003eCelestron Product Number: 93623\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default","offer_id":10552729985,"sku":"CEL-93623","price":132.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/970-1-thumb.jpeg?v=1776458955"},{"product_id":"uhc-lpr-filter-1-25-round-mounted-94123","title":"Celestron UHC\/LPR Filter - 1.25\" Round Mounted - 94123","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Celestron UHC\/LPR Filter - 1.25\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron Ultra High Contrast \/Light Pollution Reduction Filter\u003c\/b\u003e is designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIn addition to it''s optimum spectral and optical characteristics, the \u003cb\u003eCelestron Ultra High Contrast \/Light Pollution Reduction Filter\u003c\/b\u003e offers important features that set it apart and result in the highest quality celestial views: The multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eImproved transmission of the \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e translates to maximum image brightness and contrast. Users of smaller, 4\"-11\" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass and inclusion of an extremely efficient H-Alpha passband (656nm).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron UHC\/LPR Filter - 1.25\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIon beam hardened using the latest technology for durability and resistance to scratching\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdvanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh transmission, sharp cutoffs, and more moderate 60nm passband retains a more natural view, yet significantly boosts overall contrast\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eImproved transmission translates to maximum image brightness and contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron UHC\/LPR Filter - 1.25\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Ultra High Contrast \/ Light Pollution Reduction\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 1.25\"\u003c\/p\u003e\n\u003cp\u003eConstruction: Threaded Aluminum Cell\u003c\/p\u003e\n\u003cp\u003ePassband: 60nm\u003c\/p\u003e\n\u003cp\u003eTransmission: 97%\u003c\/p\u003e\nCelestron Product Number: 94123","brand":"Celestron","offers":[{"title":"Default","offer_id":10552730369,"sku":"CEL-94123","price":132.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/ImageGen.ashx_image_2Fmedia_2F382123_2F24123-125-inch-filter_01.jpg_altImage_2Fimages_2Fwhite800x600.jpeg?v=1776459086"},{"product_id":"oxygen-iii-narrowband-filter-2-round-mounted-93624","title":"Celestron Oxygen III Narrowband Filter - 2\" Round Mounted - 93624","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Celestron Oxygen III Narrowband Filter - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron OIII Narrowband Telescope Filter\u003c\/b\u003e isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black sky background and the faint photons of OIII light needed for detailed views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae, among other objects.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach \u003cb\u003eCelestron OIII Narrowband Telescope Filter\u003c\/b\u003e has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm This eliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(Psssst! If you have ever wondered how to see the Helix Nebula with your telescope, this is the way! ;)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron Oxygen III Narrowband Filter - 2\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIsolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlocks the rest of the overall spectrum of light\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e2\" round threaded cell design fits almost all standard 2\" telescope eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron Oxygen III Narrowband Filter - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: OIII Narrowband\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eConstruction: Threaded Aluminum Cell\u003c\/p\u003e\nCelestron Product Number: 93624","brand":"Celestron","offers":[{"title":"Default","offer_id":10552730817,"sku":"CEL-93624","price":174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/972-1-thumb.jpeg?v=1776459152"},{"product_id":"uhc-lpr-filter-2-round-mounted-94124","title":"Celestron UHC\/LPR Filter - 2\" Round Mounted - 94124","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Celestron UHC\/LPR Filter - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron Ultra High Contrast \/Light Pollution Reduction Filter\u003c\/b\u003e is designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIn addition to it's optimum spectral and optical characteristics, the \u003cb\u003eCelestron Ultra High Contrast \/Light Pollution Reduction Filter\u003c\/b\u003e offers important features that set it apart and result in the highest quality celestial views: The multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eImproved transmission of the \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e translates to maximum image brightness and contrast. Users of smaller, 4\"-11\" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass and inclusion of an extremely efficient H-Alpha passband (656nm).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron UHC\/LPR Filter - 2\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIon beam hardened using the latest technology for durability and resistance to scratching\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdvanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh transmission, sharp cutoffs, and more moderate 60nm passband retains a more natural view, yet significantly boosts overall contrast\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eImproved transmission translates to maximum image brightness and contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron UHC\/LPR Filter - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Ultra High Contrast \/ Light Pollution Reduction\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eConstruction: Threaded Aluminum Cell\u003c\/p\u003e\n\u003cp\u003ePassband: 60nm\u003c\/p\u003e\n\u003cp\u003eTransmission: 97%\u003c\/p\u003e\n\u003cp\u003eCelestron Product Number: 94124\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default","offer_id":10552731137,"sku":"CEL-94124","price":174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/94124_2-inch_filter.webp?v=1776459263"},{"product_id":"contrast-booster-filter-1-25-round-mounted-fcb-1","title":"Baader Contrast Booster Filter - Round Mounted - FCB-","description":"\u003ch3\u003e Choose either the Baader 1.25\" or 2\" Round Mounted Filter from the dropdown...\u003c\/h3\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Contrast Booster Filter\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Contrast Booster Filter\u003c\/b\u003e is much more than a simple minus-violet filter. Based on the popular Baader Moon \u0026amp; Skyglow filter, the Baader Contrast-Booster takes contrast enhancement and skyglow reduction to the maximum level possible from a filter. Not only does this filter deliver a significant enhancement to planetary and lunar contrasts, but it is designed to also totally eliminate the damaging blue de-focused haze present in achromatic refractors. Gone are the annoying blue halo and obscuring haze that surround and smear resolution and contrast. Subtle contrasts and colors are boosted, while displaying the full resolution your scope is capable of.\u003c\/p\u003e\n\u003cp\u003eAvailable in both 1.25\" and 2\" Round Mounted styles, the \u003cb\u003eBaader Contrast Booster Filter\u003c\/b\u003e combines a special proprietary melt of Neodymium glass with a carefully designed 23 layer dielectric long-pass blocker on one face, and a 7-layer ultra-low anti-reflection coating on the other face. By aggressively filtering out the defocused blue wavelengths, a light yellow tint is imparted to objects (noticeably less than a typical yellow filter). The special coatings enable over 95% transmission across key portions of the visible spectrum (including H-Alpha). This results in a filter that retains the colors and color contrasts in tough subjects like Jupiter, without excessive image dimming. Cloud bands retain their ruddy red hues, but now become more striking in contrast. The Great Red Spot finally becomes easier. Planets and Lunar landscapes are set against a jet black sky. The Contrast-Booster is a must for Solar observing when used in conjunction with Baader Astro Solar.\u003c\/p\u003e\n\u003cp\u003eAs many users have found, the \u003cb\u003eBaader Contrast Booster Filter\u003c\/b\u003e is a great filter for Mars! The views of Mars with all telescopes (including reflectors and apochromats) benefit from the RGB filtration plus blue blocking. Combined with the Baader UV-IR-Cut Filter, the Contrast-Booster makes the ideal filter set for digital imaging. Rather than add the cost of additional IR filtration (only needed for digital imaging), the Baader Contrast Booster has been optimized for visual use. Digital imagers can simply add our Baader UV-IR-Cut Filter when needed. The true 1\/4 wave fine optically polished surfaces guarantee the sharpness and contrast of the image. Filters are available in both 1.25\" and 2\" sizes.\u003c\/p\u003e\n\u003cp\u003eThe base substrate of the \u003cb\u003eBaader Contrast Booster Filter\u003c\/b\u003e is a special custom melt of Neodymium-doped glass, designed for specific transmission characteristics, and made only for Baader Planetarium. In addition to it's unique spectral characteristics, the Contrast-Booster offers Baader's hallmark optical and mechanical features that set it apart and result in the best possible image sharpness, contrast, and real-world durability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Contrast Booster Filter Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEliminates the color error present in economy refractors\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRemoves the bluish \"hue\" (= lack of contrast) during lunar, planetary, solar, and terrestrial observation!\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eStrongly emphasizes surface detail on Jupiter and Mars! If you have never seen the GRS (Great Red Spot) on Jupiter - you will with this filter!\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eOver 95% transmission. Provides a bright, brilliant image compared to the usual dark green filters that are used to bring out detail on Jupiter. Color recognition will be retained!\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe ultimate in lunar filters! The Moon appears much more natural in color (with a slight yellowish tint), compared to the usual low-priced dark green Moon filters usually offered for beginner's telescopes.\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompletely removes distracting false color and the resulting smeared and washed out image details. You have never ever seen the Moon so tack sharp in an economy-priced telescope!\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlocks atmospheric \"stray light\", also known as skyglow. Sky background turns into pitch black!\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFits each and every standard filter thread.\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCombines with the Baader Infrared Cut-Filter. In this combination all blue scatter as well as unfocused near infrared light is completely removed - an absolute must for digital imaging!\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlanoptically polished, suitable for being used in front of a binocular viewer, or for afocal image projection during digital imaging (way in front of the focal plane!)\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo deterioration of resolution with magnifications of 150x and more unlike \"raw polished\" (flame polished) glass!\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eSubstrate (glass melt): Neodymium doped glass\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRear Face Coating: 7-layer hard-multicoating, featuring 0.2% reflection\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFront Face Coating: 23-layer dielectric long pass blocker\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eIonbeam hardened coatings on both faces, absolutely scratch resistant...may be cleaned any time without\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Contrast Booster Filter Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Contrast Enhancement\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eAperture:  Available in both 1.25\" and 2\"\u003c\/p\u003e\n\u003cp\u003eCoatings: Dielectric \u0026amp; Anti-Reflection\u003c\/p\u003e\n\u003cp\u003eTransmission: above 95%\u003c\/p\u003e\n\u003cp\u003eSubstrate: Neodymium doped glass\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552731969,"sku":"BAA-FCB-1","price":136.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16890942209,"sku":"BAA-FCB-2","price":226.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/1638-1-thumb.jpeg?v=1776459021"},{"product_id":"fringe-killer-filter-1-25-round-mounted-ffk-1","title":"Baader Fringe-Killer Filter - Round Mounted - FKK-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Fringe-Killer Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eAchromat owners rejoice! Baader Planetarium has taken minus violet filtration to a new level. The \u003cb\u003eBaader Fringe Killer Filter\u003c\/b\u003e brings a type of filtration, never before seen, to the amateur. Rather than simply trimming the shorter wavelengths at a chosen wavelength and slope like all other minus violet filters, the Fringe Killer carefully attenuates a specific region of the spectrum. This allowed Baader to tune the filter for maximum practical reduction of the most damaging defocused blue wavelengths, with only a faint yellow color shift - without dimming and lowering image contrast by resorting to reduction of the important green-yellow wavelengths to crudely restore an apparent color balance! (where the eye is very sensitive, and where refractors are their sharpest). The result is a filter that removes the majority of color fringe, without affecting image brightness all, imparting strong coloration, or reducing contrast at important wavelengths. As any telescope owner knows, light is a valuable commodity for both planetary and deep sky viewing, and the fringe killer preserves every bit of light possible. Terrestrial observers will also find the qualities of this filter to be ideal for their needs.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high quality of \u003cb\u003eBaader Fringe Killer Filter\u003c\/b\u003es permits stacking with no image degradation. For an even less colored view, with noticeably boosted color contrasts, we highly recommend stacking a Moon \u0026amp; Skyglow filter with the Fringe Killer. These two filters compliment each other, and the result is an almost totally neutral view (no coloration). Image brightness is also very minimally affected, due to the optimized formula of the Moon \u0026amp; Skyglow, along with the superb anti reflection coatings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Fringe Killer Filter\u003c\/b\u003e is the perfect compliment to the Baader Contrast Booster. The Contrast Booster is an aggressive filter, designed to deliver the maximum sharpness and contrast possible from an achromat. The result is complete removal of the violet haze, with a somewhat dimmer and yellowier image. The Contrast Booster also incorporates additional RGB filtration for further enhancing color contrasts. The Fringe Killer provides a milder more natural filtration, that leaves fast achromats performing much like a classical f\/15 achromat. The Fringe Killer delivers what we feel is an ideal combination of improved resolution, contrast and unaltered image brightness, along with a very aesthetically pleasing view.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe coatings required to accomplish this innovative filtration are exceedingly complex, requiring almost 50 layers per side, using the latest DWDM Plasma assisted coating process. The \u003cb\u003eBaader Fringe Killer Filter\u003c\/b\u003e has perhaps the most complex coating ever achieved on an amateur astronomical filter\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eDigital Imagers (CCD, DigiCam, and Webcam) will find the Fringe Killer to be the ultimate mate for their achromatic refractor. The high transmission and fringe reduction work great for both planetary and deep sky imaging. Baader has also chosen to include their renowned UV\/IR Cut coatings as part of the \u003cb\u003eBaader Fringe Killer Filter\u003c\/b\u003e formula. These coatings maintain very high transmission, with well placed sharp cutoffs in the IR and UV (see the UV\/IR Cut filter below, for more detail on these coatings).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eJust like all the other Baader Planetarium filters, the \u003cb\u003eBaader Fringe Killer Filter\u003c\/b\u003e offers their trademark high quality and features. The result is industry leading performance and value.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Fringe-Killer Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOffering the brightest image of all color-correcting devices in the industry, makes the Fringe-Killer a must for even the smallest of refracting (lens type) telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRemoves blue fringing as well as red fringing above 656 nm.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eForms a \"plateau\" of eff. 50% transmission in the blue spectral region from 450 nm to 480 nm, which is much more complex to produce than even the narrowest of all Nebula Filters.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRetains the highest light transmission of all known color correcting devices - be it filters or lenses - in all important deep sky wavelengths from 486\/501 up to 656 nm.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBuilt-in Infrared Blocker, ranging from 656 to 1150 nm, makes it the perfect tool for CCD work, as well as afocal projection photography with digital cameras for the Moon and planets.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe most subtle of color variations remain visible in planetary surface detail, due to the excellent color balance.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCombine with the Baader Red 610 nm color filter to receive an ultra narrow (~70nm) wide H-Alpha passband filter at an amazing 95% peak transmission, and at the world'''s lowest price!\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCombine with a Skyglow Filter for breathtaking contrast on lunar and planetary surface detail.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlanoptically polished to achieve perfect sharpness, even when mounted way in front of a binocular viewer, or during afocal projection (digital imaging).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo deterioration of resolution with magnification at 300 times or more, something that would not happen with the usual \"flame polished\" (raw polished) glass, commonly used for a wide variety of filters.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlasma-assisted, hardest, scratch proof and water impermeable dielectric coatings of almost 50 coating layers on either side, most carefully designed to extend equal tension onto either side of the substrate in order to retain the highest quality optical figure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Fringe-Killer Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Minus Violet\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003eTransmission Rate: above 95%\u003c\/p\u003e\n\u003cp\u003eCoatings: Dielectric\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552732161,"sku":"BAA-FFK-1","price":134.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16891028097,"sku":"BAA-FFK-2","price":194.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/1640-1-thumb.jpeg?v=1776459277"},{"product_id":"neodymium-moon-skyglow-filter-with-ir-cut-1-25-round-mounted-fms-1","title":"Baader Neodymium Moon \u0026 Skyglow Filter with IR Cut - 1.25\" - FMS-1","description":"\u003ccenter\u003e\n\u003ch3\u003eBaader 1.25\" Neodymium Moon \u0026amp; Skyglow Filter with IR Cut\u003c\/h3\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Planetarium Moon \u0026amp; Skyglow (Neodymium) Filter\u003c\/b\u003e brings an entirely unique approach to planetary contrast enhancement and light pollution reduction. Based on earlier research at Carl Zeiss, Baader has developed a new filter that uses Neodymium glass which filters out a few specific wavelengths from streetlights as well as skyglow from the Moon. The unique spectral characteristics of Neodymium also boost color contrasts by isolating the Red, Green, and Blue regions (so-called RGB enhancement). The result is a filter that leaves natural colors mostly intact, but significantly enhanced.\u003c\/p\u003e\n\u003cp\u003ePlanetary and Lunar views are improved in all scopes, reflectors, refractors (APO or Achro). Jupiter's Great Red Spot and ruddy hues of the bands are noticeably enhanced, and contrast of Martian surface features significantly boosted. The Background sky is darkened, and subtle details improved. The \u003cb\u003eBaader Planetarium Moon \u0026amp; Skyglow (Neodymium) Filter\u003c\/b\u003e's high efficiency preserves image brightness, and many Galaxies, Nebulae and Globular Star Clusters are improved due to the reduction of skyglow from artificial lighting. But that is not all. Baader has enhanced this filter by integrating its proprietary 7-layer Phantom Group and IR blocking coatings as well. The result is improved supression of chromatic aberrations for astrophotography applications.\u003c\/p\u003e\n\u003cp\u003eThe filter substrate of the \u003cb\u003eBaader Planetarium Moon \u0026amp; Skyglow (Neodymium) Filter\u003c\/b\u003e is a special custom melt of Neodymium doped glass, designed for specific transmission characteristics, and made only for Baader Planetarium. In addition to its unique spectral characteristics, unlike most filters, the Baader Moon \u0026amp; Skyglow surfaces are optically polished to deliver the best possible image sharpness and contrast. The high quality of Baader Planetarium filters permits stacking with no image degradation.\u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch3\u003eBaader Neodymium Moon \u0026amp; Skyglow Filter with IR Cut - Round Mounted Features...\u003c\/h3\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Baader Moon amd Skyglow Neodymium Filter goes back upon a development of Carl Zeiss Jena.\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eIf you have never seen the GRS (Great Red Spot) on Jupiter or surface features on Mars with this filter you will!\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnhance contrast amd reduce the affects of light pollution with this new and improved Baader Planetarium Moon amd Skyglow Neodymium Filter!\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRed, green and blue colors are enhanced, background sky is darkened, and image brightness is preserved.\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFilters out Moon-glow wavelengths as well as those from street lights.\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCombine with the Fringe Killer filter for amazing planetary viewing!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ccenter\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Moon \u0026amp; Skyglow\u003c\/p\u003e\n\u003cp\u003eFormat: 1.25\" Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003eCoatings: Phantom Group and IR blocking coatings\u003c\/p\u003e\n\u003cp\u003eSubstrate: Neodymium glass\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":10552732353,"sku":"BAA-FMS-1","price":130.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/1643-1-thumb.jpeg?v=1776459246"},{"product_id":"semi-apo-filter-1-25-round-mounted-fsapo-1","title":"Baader Semi-APO Filter - Round Mounted - FSAPO-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Semi-APO Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Planetarium Semi-APO Filter\u003c\/b\u003e works like it'''s name implies, delivering an amazingly neutral view, while cutting most of the annoying and contrast-robbing violet fringe that plagues all achromats. The Semi-APO filter combines a stronger Fringe Killer coating formula with the Moon \u0026amp; Skyglow Neodymium substrate. The result is similar performance to the Fringe Killer plus Moon \u0026amp; Skyglow combination, but with a slightly stronger violet cut and at an even greater value.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Planetarium Semi-APO Filter\u003c\/b\u003e benefits from all the host of world-class Baader filter attributes. The Semi-APO filter is truly the world'''s most advanced \"minus-violet\" type filter in every regard. It'''s high efficiency and neutral coloration make it practically disappear in use, while making most of the violet fringe disappear! The effects on sharpness, contrast, and aesthetics are remarkable, even with small refractors. The RGB enhancement of the Neodymium substrate actually boosts color contrasts, particularly for Jupiter and Mars.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAs a side benefit, the \u003cb\u003eBaader Planetarium Semi-APO Filter\u003c\/b\u003e has also proven to be the best Mars filter we''ve used, regardless of the telescope used, including large Dobsonians, SCTs, and Apochromats. The unique properties that result from the combination of the Fringe Killer'''s blue wavelength attenuation (attenuation - not total elimination), plus the selective Neodymium RGB passbands, result in a significant contrast enhancement of Martian features. The image retains its natural coloration and brightness, and the optically polished surfaces maintain every bit of the image sharpness, unlike other manufacturer''s filters.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high quality of \u003cb\u003eBaader Planetarium Semi-APO Filter\u003c\/b\u003es permits their use well ahead of the focal plane with no image degradation (ie, for cameras or binoviewers). The inclusion of Baader'''s renowned UV\/IR Cut coatings on the Semi-APO eliminate UV and IR wavelengths to make it ideal for high-resolution imaging with Webcams, DSLR, and CCD cameras, and the high transmission and fringe reduction work great for both planetary and deep sky imaging.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Semi-APO Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Baader Planetarium Semi-APO Filter combines the stronger Fringe Killer coating formula with Moon \u0026amp; Skyglow Neodymium glass.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThis combination results in a stronger violet cut when used with all refractors, but also blocks out skyglow from light pollution \u0026amp; the Moon, providing views with better contrast \u0026amp; sharpness.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Baader Planetarium Semi-APO Filter RGB enhancement boosts color contrast, particularly on Jupiter and Mars.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eA great Mars filter for all telescopes, including SCTs and Dobsonians.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Semi-APO Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Semi-APO\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eGlass Type: Neodymium substrate\u003c\/p\u003e\n\u003cp\u003eCoatings: UV\/IR Cut\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552733121,"sku":"BAA-FSAPO-1","price":132.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16906763393,"sku":"BAA-FSAPO-2","price":238.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2271-1-thumb.jpeg?v=1776459175"},{"product_id":"premium-six-piece-color-filter-set-1-25-round-mounted-fcfs-1","title":"Baader Premium Six-Piece Color Filter Set - 1.25\" Round Mounted - FCFS-1","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Premium Six-Piece Color Filter Set - 1.25\" Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e includes three bandpass filters (Green, Bright Blue, Dark Blue) and three long-pass filters (Red, Orange, Yellow) and is designed for 1.25\" eyepieces. A fine optical polish and 2 mm thick glass allows these filters to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSubstrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass. The complete \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e comprises three long-pass and three genuine bandpass filters, which act similar to a nebula filter, so that only a small portion of the visual spectrum is transmitted to emphasize certain planetary surface detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e has transmission efficiencies for the three long-pass filters (Yellow, Orange and Red) peaks at 98%, while the efficiency for the three bandpass filters peaks at almost 70%, unheard of for a simple colored glass filter. All filters have standard 1.25\" eyepiece filter threads, tested and optimized to fit almost all eyepieces on the market. Each filter cell has a male as well as a female thread to allow stacking for narrower passbands or to combine with the Baader UV\/IR-Cut filter. The combination of the Red and IR-Cut filter, for instance, results in an extremely narrow H-Alpha pass-band filter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell of the \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the filter an easy operation in the dark. All surfaces are treated with a 7-layer multi-coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLight is the hottest commodity for all planetary observation, and you''ll get it with the \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e. This is especially true during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution. The 7-layer MC-coatings not only provide a brighter image, they prevent the softening effect of scattered light. Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Premium Six-Piece Color Filter Set - 1.25\" Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from Ghost images, even when stacked. Striae-free substrates are polished parallel to 30 seconds of to avoid wedge errors. Finest 7-layer hard multicoatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multicoatings). The coatings are also different for each of the filters, in order to match the coating performance to the filter curve of each color. This maximizes the transmission and minimizes reflections.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely High Transmissions result in maximum contrast and isolation of planetary details, even with smaller telescopes. Efficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Premium Six-Piece Color Filter Set - 1.25\" Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Color\u003c\/p\u003e\n\u003cp\u003eSet Includes: Red (610 nm) Longpass, Orange (570 nm) Longpass, Yellow (495 nm) Longpass, Green (500 nm) Bandpass, Bright Blue (470 nm) Bandpass, Dark Blue (435 nm) Bandpass\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 1.25\"\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003eTransmission: 70% to 98%\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi-coated\u003c\/p\u003e\nBaader Planetarium Product Number: FCFS-1","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552733377,"sku":"BAA-FCFS-1","price":401.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2275-1-thumb.jpeg?v=1776459266"},{"product_id":"premium-six-piece-color-filter-set-2-round-mounted-fcfs-2","title":"Baader Premium Six-Piece Color Filter Set - 2\" Round Mounted - FCFS-2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Premium Six-Piece Color Filter Set - 2\" Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e includes three bandpass filters (Green, Bright Blue, Dark Blue) and three long-pass filters (Red, Orange, Yellow) and is designed for 1.25\" eyepieces. A fine optical polish and 2 mm thick glass allows these filters to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSubstrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass. The complete \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e comprises three long-pass and three genuine bandpass filters, which act similar to a nebula filter, so that only a small portion of the visual spectrum is transmitted to emphasize certain planetary surface detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e has transmission efficiencies for the three long-pass filters (Yellow, Orange and Red) peaks at 98%, while the efficiency for the three bandpass filters peaks at almost 70%, unheard of for a simple colored glass filter. All filters have standard 1.25\" eyepiece filter threads, tested and optimized to fit almost all eyepieces on the market. Each filter cell has a male as well as a female thread to allow stacking for narrower passbands or to combine with the Baader UV\/IR-Cut filter. The combination of the Red and IR-Cut filter, for instance, results in an extremely narrow H-Alpha pass-band filter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell of the \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the filter an easy operation in the dark. All surfaces are treated with a 7-layer multi-coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLight is the hottest commodity for all planetary observation, and you''ll get it with the \u003cb\u003eBaader Premium Six-Piece Color Filter Set\u003c\/b\u003e. This is especially true during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution. The 7-layer MC-coatings not only provide a brighter image, they prevent the softening effect of scattered light. Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Premium Six-Piece Color Filter Set - 2\" Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from Ghost images, even when stacked. Striae-free substrates are polished parallel to 30 seconds of to avoid wedge errors. Finest 7-layer hard multicoatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multicoatings). The coatings are also different for each of the filters, in order to match the coating performance to the filter curve of each color. This maximizes the transmission and minimizes reflections.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely High Transmissions result in maximum contrast and isolation of planetary details, even with smaller telescopes. Efficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Premium Six-Piece Color Filter Set - 2\" Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Color\u003c\/p\u003e\n\u003cp\u003eSet Includes: Red (610 nm) Longpass, Orange (570 nm) Longpass, Yellow (495 nm) Longpass, Green (500 nm) Bandpass, Bright Blue (470 nm) Bandpass, Dark Blue (435 nm) Bandpass\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003eTransmission: 70% to 98%\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi-coated\u003c\/p\u003e\nBaader Planetarium Product Number: FCFS-2","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552733441,"sku":"BAA-FCFS-2","price":605.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2276-1-thumb.jpeg?v=1776459347"},{"product_id":"ir-pass-670nm-filter-1-25-round-mounted-firp-1","title":"Baader IR-Pass 670nm Filter - 1.25\" Round Mounted - FIRP-1","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader IR-Pass 670nm Filter...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium delivers the latest tool in the planetary imager's bag of tricks. The \u003cb\u003eBaader 1.25\" IR-Pass Filter\u003c\/b\u003e blocks wavelengths below 670 nm. At these longer wavelengths, planetary images are less disturbed by wavefront distortions in the atmosphere (seeing). By combining a luminance image taken with the IR-Pass filter, along with RGB frames, overall image sharpness is significantly enhanced. Some of the world's best amateur planetary images have been taken with this technique.\u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader IR-Pass Filter\u003c\/b\u003e shares the same outstanding features as all the other Baader filters. High optical quality, Striae-free substrate, and high efficiency multi-coatings result in the sharpest and highest contrast image possible.\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader IR-Pass 670nm Filter Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Baader IR-Pass Filter blocks wavelengths below 670nm.\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlanetary images are less disturbed by wavefront distortions at these longer wavelengths.\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEach Baader Planetarium IR-Pass Filter substrate is fine-optically polished plane parallel for 1\/4 wavefront over entire surface.\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eMulti-layer dielectric coatings are plasma-assisted and ionbeam-hardened using the latest technology.\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCoatings will never degrade from use or normal cleaning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader IR-Pass 670nm Filter Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Infrared Blocking\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eSize:  1.25\"\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePassband: 670nm\u003c\/p\u003e\n\u003cp\u003eCoatings: Dielectric\u003c\/p\u003e\n\u003cp\u003ePurpose: Photographic\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":21761914945,"sku":"BAA-FIRP-1","price":132.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2281-1-thumb.jpeg?v=1776459153"},{"product_id":"ir-pass-670nm-filter-2-round-mounted-firp-2","title":"Baader IR-Pass 670nm Filter - 2\" Round Mounted - FIRP-2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader IR-Pass 670nm Filter - 2\" Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium delivers the latest tool in the planetary imager''s bag of tricks. The \u003cb\u003eBaader IR-Pass Filter\u003c\/b\u003e blocks wavelengths below 670 nm. At these longer wavelengths, planetary images are less disturbed by wavefront distortions in the atmosphere (seeing). By combining a luminance image taken with the IR-Pass filter, along with RGB frames, overall image sharpness is significantly enhanced. Some of the world''s best amateur planetary images have been taken with this technique.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader IR-Pass Filter\u003c\/b\u003e shares the same outstanding features as all the other Baader filters. High optical quality, Striae-free substrate, and high efficiency multicoatings result in the sharpest and highest contrast image possible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader IR-Pass 670nm Filter - 2\" Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe Baader IR-Pass Filter blocks wavelengths below 670nm.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlanetary images are less disturbed by wavefront distortions at these longer wavelengths.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEach Baader Planetarium IR-Pass Filter substrate is fine-optically polished plane parallel for 1\/4 wavefront over entire surface.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eMulti-layer dielectric coatings are plasma-assisted and ionbeam-hardened using the latest technology.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCoatings will never degrade from use or normal cleaning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader IR-Pass 670nm Filter - 2\" Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Infrared Blocking\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePassband: 670nm\u003c\/p\u003e\n\u003cp\u003eCoatings: Dielectric\u003c\/p\u003e\n\u003cp\u003ePurpose: Photographic\u003c\/p\u003e\nBaader Planetarium Product Number: FIRP-2","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552733825,"sku":"BAA-FIRP-2","price":209.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2282-1-thumb.jpeg?v=1776459223"},{"product_id":"ultraviolet-320-390nm-venus-filter-2-round-mounted-fuv-2","title":"Baader Ultraviolet 320-390nm Venus Filter - 2\" Round Mounted - FUV-2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Ultraviolet Venus Filter - 2\" Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eAnother unique new filter from Baader Planetarium. For the first time, amateurs can now record cloud structures on Venus. The \u003cb\u003eBaader Ultraviolet Venus Filter\u003c\/b\u003e enables amateurs to successfully image in the deep UV, a spectral region normally inaccessible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe latest coating technologies permit the \u003cb\u003eBaader Ultraviolet Venus Filter\u003c\/b\u003e to transmit from 300nm to 400nm, with a peak transmission of 80%! The filter completely blocks the rest of the region from 200nm to 1500nm, through the use of a complex 20 layer dielectric coating stack, on top of a special UG-11 substrate. Up till now, Amateur efforts typically relied upon deep violet colored filters, or combinations with simpler interference filters, which do not provide the high transmission and efficient rejection outside the important spectral region from 320nm to 390nm. Given the poor transmissions of many optics in the UV and the lower sensitivity of some CCDs to this wavelength, high filter efficiency and complete rejection at longer wavelengths becomes paramount to recording good contrast at reasonable exposures. The same high optical quality and features as the other Baader filters ensures the highest contrast and sharpest images possible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eInterestingly, the solar Calcium K-Line is also within the pass band of the \u003cb\u003eBaader Ultraviolet Venus Filter\u003c\/b\u003e. This opens up the exciting possibility for recording flare structures on the solar disk or edges. The Baader U Filter has become the choice of UV imagers exploring the UV world of landscape, floral, and even forensic imaging. The latest 2\" filter now has even higher transmission and improved out of band blocking. By using the DSLR-2 filter adapter ring plus the appropriate filter step ring (HDT-Rings), UV imagers can conveniently mount the U-Filter to their camera lens.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Ultraviolet Venus Filter - 2\" Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFor the first time, amateurs can now record cloud structures on Venus\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe Baader U Filter has become the choice of UV imagers exploring the UV world of landscape, floral, and even forensic imaging\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe latest coating technologies permit the filter to transmit from 300nm to 400nm, with a peak transmission of 80%!\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe filter completely blocks the rest of the region from 200nm to 1500nm, through the use of a complex 20 layer dielectric coating stack, on top of a special UG-11 substrate\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe same high optical quality and features as the other Baader filters ensures the highest contrast and sharpest images possible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Ultraviolet Venus Filter - 2\" Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Ultraviolet\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eBandwidth: 300nm to 400nm\u003c\/p\u003e\n\u003cp\u003eTransmission: 80%\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Dielectric\u003c\/p\u003e\nBaader Planetarium Product Number: FUV-2","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552733889,"sku":"BAA-FUV-2","price":487.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2283-1-thumb.jpeg?v=1776459275"},{"product_id":"clear-focusing-filter-1-25-round-mounted-fc-1","title":"Baader Clear Focusing Filter - Round Mounted - FC-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Clear Focusing Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eUse of special photography filters, especially narrowband filters, often results in dim images which can be difficult to focus. \u003cb\u003eBaader Planetarium Clear Filters\u003c\/b\u003e can be used first to clearly focus the image. Since they are parfocal with other Baader filters, they can then be removed and replaced by other imaging filters, without affecting focus.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high optical quality of the \u003cb\u003eBaader Planetarium Clear Filters\u003c\/b\u003e guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1\/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Clear Focusing Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan be used first to clearly focus the image\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eParfocal with other Baader filters\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThey can then be removed and replaced by other imaging filters, without affecting focus\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFine-optically polished plane parallel to deliver a smooth and accurate 1\/4 wavefront over the entire surface\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpecial custom polishing operation sets Baader filters apart\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Clear Focusing Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Clear Focusing\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552734785,"sku":"BAA-FC-1","price":63.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16890814593,"sku":"BAA-FC-2","price":105.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2292-1-thumb.jpeg?v=1776459277"},{"product_id":"clear-focusing-filter-50-8mm-round-unmounted-fc-rd50","title":"Baader Clear Focusing Filter - 50.8mm Round Unmounted - FC-RD50","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Clear Focusing Filter - 50.8mm Round Unmounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eUse of special photography filters, especially narrowband filters, often results in dim images which can be difficult to focus. \u003cb\u003eBaader Planetarium Clear Filters\u003c\/b\u003e can be used first to clearly focus the image. Since they are parfocal with other Baader filters, they can then be removed and replaced by other imaging filters, without affecting focus.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high optical quality of the \u003cb\u003eBaader Planetarium Clear Filters\u003c\/b\u003e guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1\/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Clear Focusing Filter - 50.8mm Round Unmounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan be used first to clearly focus the image\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eParfocal with other Baader filters\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThey can then be removed and replaced by other imaging filters, without affecting focus\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFine-optically polished plane parallel to deliver a smooth and accurate 1\/4 wavefront over the entire surface\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpecial custom polishing operation sets Baader filters apart\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Clear Focusing Filter - 50.8mm Round Unmounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Clear Focusing\u003c\/p\u003e\n\u003cp\u003eFormat: Round Unmounted\u003c\/p\u003e\n\u003cp\u003eSize: 50.8mm\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\nBaader Planetarium Product Number: FC-RD50","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552735425,"sku":"BAA-FC-RD50","price":121.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2299-1-thumb.jpeg?v=1776459277"},{"product_id":"clear-focusing-filter-50mm-square-unmounted-fc-sq50","title":"Baader Clear Focusing Filter - 50mm Square Unmounted - FC-SQ50","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Clear Focusing Filter - 50mm Square Unmounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eUse of special photography filters, especially narrowband filters, often results in dim images which can be difficult to focus. \u003cb\u003eBaader Planetarium Clear Filters\u003c\/b\u003e can be used first to clearly focus the image. Since they are parfocal with other Baader filters, they can then be removed and replaced by other imaging filters, without affecting focus.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high optical quality of the \u003cb\u003eBaader Planetarium Clear Filters\u003c\/b\u003e guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1\/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Clear Focusing Filter - 50mm Square Unmounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan be used first to clearly focus the image\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eParfocal with other Baader filters\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThey can then be removed and replaced by other imaging filters, without affecting focus\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFine-optically polished plane parallel to deliver a smooth and accurate 1\/4 wavefront over the entire surface\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpecial custom polishing operation sets Baader filters apart\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Clear Focusing Filter - 50mm Square Unmounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Clear Focusing\u003c\/p\u003e\n\u003cp\u003eFormat: Square Unmounted\u003c\/p\u003e\n\u003cp\u003eSize: 50mm\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\nBaader Planetarium Product Number: FC-SQ50","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552735489,"sku":"BAA-FC-SQ50","price":140.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2300-1-thumb.jpeg?v=1776459152"},{"product_id":"astro-conversion-filter-for-canon-dslrs-eos-350d-10d-20d-30d-facf-2","title":"Baader Astro Conversion Filter for Canon DSLRs - EOS 350D\/10D\/20D\/30D - FACF-2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Astro Conversion Filter for Canon DSLRs - EOS 350D\/10D\/20D\/30D...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eAre you looking for the \u003cb\u003eBaader DSLR Conversion Filters for Canon EOS Cameras\u003c\/b\u003e? Then here you go... Turn your Canon DSLR into a superb deep sky AstroCamera. Baader''s DSLR conversion filters replace the factory correcting filter (\"hot mirror\"). The special substrate is coated with Baader''s renowned coatings. Imagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects). The thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point (please note: The Baader filter is intentionally of a different thickness than the factory filter - this is required to match the effective index of refraction of the factory ''sandwich'' filter).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader DSLR Conversion Filters\u003c\/b\u003e are produced to the same specifications and by the same processes used for all of their other premium Baader Astronomical Filters. Each filter is optically polished to 1\/4 wave and most importantly the ionbeam hardened coatings are applied AFTER cutting and polishing. This important aspect guarantees that your coatings will not peel or degrade due to the softer coatings and edge damage caused by post-cutting operations used by some other filters to cut costs. With a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis \u003cb\u003eBaader DSLR Conversion Filter\u003c\/b\u003e is intended for amateurs that are comfortable replacing their camera''s stock filter. Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1, II, III). The FBCF-400D is clear with no pinkish side and does not require any particular orientation. The digital astro eGroup is a great place for advice on how to replace this filter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Astro Conversion Filter for Canon DSLRs Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEach filter is optically polished to 1\/4 wave\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eIonbeam hardened coatings are applied AFTER cutting and polishing\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eImagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects)\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Astro Conversion Filter for Canon DSLRs Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Astro Conversion\u003c\/p\u003e\n\u003cp\u003eApplication: Canon DSLRs EOS 350D\/10D\/20D\/30D\u003c\/p\u003e\n\u003cp\u003eFormat: Rectangular, Unmounted\u003c\/p\u003e\n\u003cp\u003eDimensions: 26.9x19.5x2.7mm\u003c\/p\u003e\n\u003cp\u003eOptical Quality: 1\/4 wave\u003c\/p\u003e\nBaader Product Number: FACF-2","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552736385,"sku":"BAA-FACF-2","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2318-1-thumb.jpeg?v=1776459144"},{"product_id":"astro-conversion-filter-for-canon-dslrs-eos-400xti-400d-40d-450d-fbcf-400d","title":"Baader Astro Conversion Filter for Canon DSLRs - EOS 7D\/60D\/400D\/More -FBCF-400D","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Astro Conversion Filter for Canon DSLRs - EOS 400XTi\/400D\/40D\/450D...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eAre you looking for the \u003cb\u003eBaader DSLR Conversion Filters for Canon EOS Cameras\u003c\/b\u003e? Then here you go... Turn your Canon DSLR into a superb deep sky AstroCamera. Baader''s DSLR conversion filters replace the factory correcting filter (\"hot mirror\"). The special substrate is coated with Baader''s renowned coatings. Imagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects). The thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point (please note: The Baader filter is intentionally of a different thickness than the factory filter - this is required to match the effective index of refraction of the factory ''sandwich'' filter).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader DSLR Conversion Filters\u003c\/b\u003e are produced to the same specifications and by the same processes used for all of their other premium Baader Astronomical Filters. Each filter is optically polished to 1\/4 wave and most importantly the ionbeam hardened coatings are applied AFTER cutting and polishing. This important aspect guarantees that your coatings will not peel or degrade due to the softer coatings and edge damage caused by post-cutting operations used by some other filters to cut costs. With a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis \u003cb\u003eBaader DSLR Conversion Filter\u003c\/b\u003e is intended for amateurs that are comfortable replacing their camera''s stock filter. Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1, II, III). The FBCF-400D is clear with no pinkish side and does not require any particular orientation. The digital astro eGroup is a great place for advice on how to replace this filter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Astro Conversion Filter for Canon DSLRs Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEach filter is optically polished to 1\/4 wave\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eIonbeam hardened coatings are applied AFTER cutting and polishing\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eImagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects)\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Astro Conversion Filter for Canon DSLRs Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Astro Conversion\u003c\/p\u003e\n\u003cp\u003eApplication: Canon DSLRs EOS 400XTi\/400D\/40D\/450D\u003c\/p\u003e\n\u003cp\u003eFormat: Rectangular, Unmounted\u003c\/p\u003e\n\u003cp\u003eDimensions: 26.9x19.5x2.7mm\u003c\/p\u003e\n\u003cp\u003eOptical Quality: 1\/4 wave\u003c\/p\u003e\nBaader Product Number: FBCF-400D","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":10552736513,"sku":"BAA-FBCF-400D","price":114.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2320-1-thumb.jpeg?v=1776459327"},{"product_id":"polarization-filter-for-herschel-wedge-2-round-mounted-fpol-2","title":"Baader 2\" Single Polarizing Filter - FPOL-2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch3\u003eAbout the Baader Polarization Filter - Great for Herschel Wedge!\u003c\/h3\u003e\n\u003c\/center\u003e\n\u003cp\u003eA particularly handy attribute of the Herschel Wedge is its partial polarizing effect on the solar image. This permits a very convenient means of variably adjusting the image brightness, simply by using a single polarizing filter, like the \u003cb\u003ePolarization Filter for Herschel Wedge\u003c\/b\u003e between the Herschel and Eyepiece. The filter\/eyepiece combo can then be rotated, and the image is variably dimmed. This method is very useful for easily achieving the optimum brightness for maximum visual contrast at any magnification.\u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eBaader Polarization Filter for Herschel Wedge - 2\" Round Mounted\u003c\/b\u003e be attached to a 2\" eyepiece. For the ultimate in convenience, we recommend the 2\" Polarizer attached to a T2-15 (2\"-1.25\" adapter). This allows you to conveniently switch between 1.25\" eyepieces without removing the filter, and still maintaining a close position between the eyepiece and filter. Use of a T2-15 also gives you a very convenient means of attaching and removing the Solar Continuum filter.\u003c\/p\u003e\n\u003cp\u003e\u003ci\u003e\u003cb\u003ePlease Note:\u003c\/b\u003e Polarizing filters are intended for visual use and must only be used in conjunction with the existing internal ND=3.0 filter. A polarizing filter does not provide sufficient blocking by itself, nor is it able to block IR wavelengths as completely as an ND filter.\u003c\/i\u003e\u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch3\u003eBaader 2\" Polarization Filter Use for Herschel Wedge\u003c\/h3\u003e\n\u003c\/center\u003e\n\u003cul\u003e\n\u003cli\u003eA polarizing filter does not provide sufficient blocking by itself, nor is it able to block IR wavelengths as completely as an ND filter\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eVery convenient means of variably adjusting the image brightness\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptimum brightness for maximum visual contrast at any magnification\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ci\u003eDo not use this polarization filter on the Sun except as part of the Herschel Wedge chain. Immediate eye damage will result.\u003c\/i\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Polarization - White Light Solar\u003c\/p\u003e\n\u003cp\u003eApplication: 2\" Baader Herschel Wedge\u003c\/p\u003e\n\u003cp\u003eEyepiece Size: 2\"\u003c\/p\u003e\n\u003cp\u003eBaader Product Number: FPOL-2\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default","offer_id":10552737025,"sku":"BAA-FPOL-2","price":105.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/3491-1-thumb.jpeg?v=1776459273"},{"product_id":"dark-blue-435nm-bandpass-filter-1-25-round-mounted-fcfdb-1","title":"Baader Dark Blue 435nm Bandpass Filter - Round Mounted - FCFDB-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch3\u003eChoose either the Baader 1.25\" or 2\" Dark Blue 435nm Bandpass Filter from the dropdown...\u003c\/h3\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Dark Blue 435nm Bandpass Filter\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium astronomy filters by far supersede the mediocre quality of common \"flame polished\" color filters. A fine optical polish and 2 mm thick glass allows the \u003cb\u003eBaader Dark Blue Filter\u003c\/b\u003e to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass.\u003c\/p\u003e\n\u003cp\u003eThe 1.25\" or 2\" filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the \u003cb\u003eBaader Dark Blue Filter\u003c\/b\u003e an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution.\u003c\/p\u003e\n\u003cp\u003eLess is more: 7-layer MC-coatings on the \u003cb\u003eBaader Dark Blue Filter\u003c\/b\u003e not only provide a brighter image, they prevent the softening effect of scattered light! Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Dark Blue 435nm Bandpass Filter Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from ghost images, even when stacked.\n\u003cp\u003eStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multi-coatings)\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith the 2\" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Dark Blue 435nm Bandpass Filter Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Dark Blue\u003c\/p\u003e\n\u003cp\u003eBandpass: 435nm\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eAperture:  1.25\" or 2\"\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Visual and Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi\u003c\/p\u003e\n\u003cp\u003eTransmission: 70%\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552737281,"sku":"BAA-FCFDB-1","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16891006593,"sku":"BAA-FCFDB-2","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5085-1-thumb.jpeg?v=1776459241"},{"product_id":"bright-blue-470nm-bandpass-filter-1-25-round-mounted-fcfb-1","title":"Baader Blue 470nm Bandpass Filter - FCFB-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Bright Blue 470nm Bandpass Filter Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium astronomy filters by far supersede the mediocre quality of common \"flame polished\" color filters. A fine optical polish and 2 mm thick glass allows the \u003cb\u003eBaader Bright Blue Filter\u003c\/b\u003e to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the \u003cb\u003eBaader Bright Blue Filter\u003c\/b\u003e an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLess is more: 7-layer MC-coatings on the \u003cb\u003eBaader Bright Blue Filter\u003c\/b\u003e not only provide a brighter image, they prevent the softening effect of scattered light! Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Bright Blue 470nm Bandpass Filter Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from ghost images, even when stacked.\n\u003cp\u003eStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multi-coatings).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith the 2\" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Bright Blue 470nm Bandpass Filter Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Bright Blue\u003c\/p\u003e\n\u003cp\u003eBandpass: 470nm\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Visual and Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi\u003c\/p\u003e\n\u003cp\u003eTransmission: 70%\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552737601,"sku":"BAA-FCFB-1","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16890789441,"sku":"BAA-FCFB-2","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5087-1-thumb.jpeg?v=1776459121"},{"product_id":"green-500nm-bandpass-filter-1-25-round-mounted-fcfg-1","title":"Baader Green 500nm Bandpass Filter - Round Mounted - FCFG-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Green 500nm Bandpass Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium astronomy filters by far supersede the mediocre quality of common \"flame polished\" color filters. A fine optical polish and 2 mm thick glass allows the \u003cb\u003eBaader Green Filter\u003c\/b\u003e to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the \u003cb\u003eBaader Green Filter\u003c\/b\u003e an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLess is more: 7-layer MC-coatings on the \u003cb\u003eBaader Green Filter\u003c\/b\u003e not only provide a brighter image, they prevent the softening effect of scattered light! Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Green 500nm Bandpass Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from ghost images, even when stacked.\n\u003cp\u003eStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multi-coatings).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith the 2\" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Green 500nm Bandpass Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Green\u003c\/p\u003e\n\u003cp\u003eBandpass: 500nm\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Visual and Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi\u003c\/p\u003e\n\u003cp\u003eTransmission: 70%\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552737793,"sku":"BAA-FCFG-1","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16891039425,"sku":"BAA-FCFG-2","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5089-1-thumb.jpeg?v=1776459122"},{"product_id":"yellow-495nm-long-pass-filter-1-25-round-mounted-fcfy-1","title":"Baader Yellow 495nm Long-Pass Filter - Round Mounted - FCFY-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Yellow 495nm Long-Pass Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium astronomy filters by far supersede the mediocre quality of common \"flame polished\" color filters. A fine optical polish and 2 mm thick glass allows the \u003cb\u003eBaader Yellow Filter\u003c\/b\u003e to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the \u003cb\u003eBaader Yellow Filter\u003c\/b\u003e an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLess is more: 7-layer MC-coatings on the \u003cb\u003eBaader Yellow Filter\u003c\/b\u003e not only provide a brighter image, they prevent the softening effect of scattered light! Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Yellow 495nm Long-Pass Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from ghost images, even when stacked.\n\u003cp\u003eStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multi-coatings).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith the 2\" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Yellow 495nm Long-Pass Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Yellow\u003c\/p\u003e\n\u003cp\u003eBandpass: 495nm\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Visual and Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi\u003c\/p\u003e\n\u003cp\u003eTransmission: 98%\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552737921,"sku":"BAA-FCFY-1","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16906810305,"sku":"BAA-FCFY-2","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5091-1-thumb.jpeg?v=1776459105"},{"product_id":"orange-570nm-long-pass-filter-1-25-round-mounted-fcfo-1","title":"Baader Orange 570nm Long-Pass Filter - Round Mounted - FCFO-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Orange 570nm Long-Pass Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium astronomy filters by far supersede the mediocre quality of common \"flame polished\" color filters. A fine optical polish and 2 mm thick glass allows the \u003cb\u003eBaader Orange Filter\u003c\/b\u003e to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the \u003cb\u003eBaader Orange Filter\u003c\/b\u003e an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLess is more: 7-layer MC-coatings on the \u003cb\u003eBaader Orange Filter\u003c\/b\u003e not only provide a brighter image, they prevent the softening effect of scattered light! Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Orange 570nm Long-Pass Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from ghost images, even when stacked.\n\u003cp\u003eStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multi-coatings).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith the 2\" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Orange 570nm Long-Pass Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Orange\u003c\/p\u003e\n\u003cp\u003eBandpass: 570nm\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Visual and Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi\u003c\/p\u003e\n\u003cp\u003eTransmission: 98%\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552738049,"sku":"BAA-FCFO-1","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16906661377,"sku":"BAA-FCFO-2","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5093-1-thumb.jpeg?v=1776459203"},{"product_id":"red-610nm-long-pass-filter-1-25-round-mounted-fcfr-1","title":"Baader Red 610nm Long-Pass Filter - Round Mounted - FCFR-","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Baader Red 610nm Long-Pass Filter - Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eBaader Planetarium astronomy filters by far supersede the mediocre quality of common \"flame polished\" color filters. A fine optical polish and 2 mm thick glass allows the \u003cb\u003eBaader Red Filter\u003c\/b\u003e to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way. Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length. The front \"crown\" incorporates milled notches, which makes handling and threading the \u003cb\u003eBaader Red Filter\u003c\/b\u003e an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light. Light is the hottest commodity for all planetary observation. Especially during high magnification work, whether you have enough light or not is the deciding factor for the recognition of the subtlest planetary surface detail, much more important than a horde of different filters of mediocre execution.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLess is more: 7-layer MC-coatings on the \u003cb\u003eBaader Red Filter\u003c\/b\u003e not only provide a brighter image, they prevent the softening effect of scattered light! Scattered light kills exactly those subtle features in planetary detail that you are longing to see. Painstaking attention to coatings and perfect optical figuring are simple reasons why the image contrast through these premium filters is so rock-solid.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Red 610nm Long-Pass Filter - Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom from ghost images, even when stacked.\n\u003cp\u003eStriae-free substrates are polished parallel to within 30 seconds of arc to avoid wedge errors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinest 7-layer hard multi-coatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multi-coatings).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtremely high transmission results in maximum contrast and isolation of planetary details, even with smaller telescopes.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEfficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWith the 2\" size, only one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eBaader Red 610nm Long-Pass Filter - Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Red\u003c\/p\u003e\n\u003cp\u003eBandpass: 610nm\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003ePurpose: Visual and Photographic\u003c\/p\u003e\n\u003cp\u003eCoatings: Multi\u003c\/p\u003e\n\u003cp\u003eTransmission: 98%\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":10552738177,"sku":"BAA-FCFR-1","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"2\"","offer_id":16906698625,"sku":"BAA-FCFR-2","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5095-1-thumb.jpeg?v=1776459163"},{"product_id":"variable-polarizing-filter-1-25-round-mounted-fxp-c","title":"Antares Variable Polarizing Filter - 1.25\" - FXP","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Antares Variable Polarizing Filter ...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eWhile observing the moon or planets, there is often too much light that washes out subtle details. This glare can be cut back using neutral density filters or polarizers. The \u003cb\u003eAntares Variable Polarizing Filter\u003c\/b\u003e makes this even better by stacking two polarizing filters together and combining them with a special ring that prevents the two individual filters from getting separated during normal use. By rotating the two elements, light transmission can be varied between about 2% and 40%. This filter retains true color balance since all wavelengths are transmitted uniformly over the entire spectrum.\u003c\/p\u003e\n\u003cp\u003eThe two polarizing elements on the 1.25\" Antares Variable Polarizing Filter can be unscrewed to obtain two polarizing filters which can be used for day time photography or to improve contrast in images when only a little reduction in transmitted light is desired. The filter has a standard thread so it can be screwed on to any virtually any standard 1.25\" eyepiece or accessory.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAntares Variable Polarizing Filter Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cul\u003e\n\u003cli\u003eCan be used for day time photography or to improve contrast in images when only a little reduction in transmitted light is desired\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan be screwed on to any virtually any standard 1.25\" eyepiece or accessory\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBy rotating the two elements, light transmission can be varied between about 2% and 40%\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRetains true color balance since all wavelengths are transmitted uniformly over the entire spectrum\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpecial ring that prevents the two individual filters from getting separated during normal use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAntares Variable Polarizing Filter Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Polarizing\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eFilter Size:  1.25\" Threaded\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWeight. 0.5 oz\u003c\/p\u003e\n\u003cp\u003eTransmission: Variable - 2%-40%\u003c\/p\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":10552739969,"sku":"ANT-7101","price":37.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/3836-1-thumb.jpeg?v=1776458903"},{"product_id":"variable-polarizing-filter-2-round-mounted-fxp-c2","title":"Antares Variable Polarizing Filter - 2\" - 2FXP","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Antares Variable Polarizing Filter - 2\" Round Mounted...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eWhile observing the moon or planets, there is often too much light that washes out subtle details. This glare can be cut back using neutral density filters or polarizers. The \u003cb\u003eAntares Variable Polarizing Filter\u003c\/b\u003e makes this even better by stacking two polarizing filters together and combining them with a special ring that prevents the two individual filters from getting separated during normal use. By rotating the two elements, light transmission can be varied between about 2% and 40%. This filter retains true color balance since all wavelengths are transmitted uniformly over the entire spectrum.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe two polarizing elements on the \u003cb\u003eAntares Variable Polarizing Filter\u003c\/b\u003e can be unscrewed to obtain two polarizing filters which can be used for day time photography or to improve contrast in images when only a little reduction in transmitted light is desired. The filter has a standard 2\" thread so it can be screwed on to any virtually any standard 2\" eyepiece or accessory.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAntares Variable Polarizing Filter - 2\" Round Mounted Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan be used for day time photography or to improve contrast in images when only a little reduction in transmitted light is desired\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCan be screwed on to any virtually any standard 1.25\" eyepiece or accessory\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBy rotating the two elements, light transmission can be varied between about 2% and 40%\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eRetains true color balance since all wavelengths are transmitted uniformly over the entire spectrum\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eSpecial ring that prevents the two individual filters from getting separated during normal use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAntares Variable Polarizing Filter - 2\" Round Mounted Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Polarizing\u003c\/p\u003e\n\u003cp\u003eFormat: Round, Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eLength: 19.3mm (0.76\")\u003c\/p\u003e\n\u003cp\u003eWeight. 0.7 oz\u003c\/p\u003e\n\u003cp\u003eTransmission: Variable - 2%-40%\u003c\/p\u003e\nAntares Optical Product Number: FXP-C2","brand":"Antares","offers":[{"title":"Default Title","offer_id":10552740033,"sku":"ANT-7114","price":67.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/3645-1-thumb.jpeg?v=1776459151"},{"product_id":"48-mm-filter-adapter-for-2-4-aft-1105","title":"Tele Vue 48mm Filter Adapter for 2.4\" - AFT-1105","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cp\u003eThe Tele Vue Imaging System 48mm Filter Adapter # AFT-1105 allows the use of 48mm filters in the optical-train and adds 0.25\" of spacing. It works best if used closest to the chip to minimize any vignetting.\u003c\/p\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":12135137537,"sku":"TEL-AFT-1105","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/AFT_1105_ssm.jpeg?v=1776458981"},{"product_id":"explore-scientific-1-25-nd-0-9-filter-310245","title":"Explore Scientific ND 0.9 Filter - 1.25\"- 310245","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Neutral Density Filter ND 0.9 - \u003cbr\u003eFits 1.25\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNeutral Density Filter\u003c\/li\u003e\n\u003cli\u003eUseful for viewing the Moon\u003c\/li\u003e\n\u003cli\u003eUse for viewing close double stars, when one is too bright\u003c\/li\u003e\n\u003cli\u003eView the Moon in comfort\u003c\/li\u003e\n\u003cli\u003eNeutral density of 0.9\u003c\/li\u003e\n\u003cli\u003e13% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 1.25\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a Neutral Density filter which fits into your 1.25\" eyepieces that have internal (female) filter threads. The Explore Scientific neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4\" (10.2 cm) and larger in aperture. The ND96 filter from Explore Scientific may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness. It has a density value of 0.9 ND. It has a total transmission specification of 13%. Fits 1.25\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329004097,"sku":"EXP-310245","price":68.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/adf72c07ac1de22b0d74c4ef0b900899_0310245_m1.jpeg?v=1776459032"},{"product_id":"explore-scientific-o-iii-nebula-filter-310205","title":"Explore Scientific O-III Nebula Filter - 1.25\" - 310205","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Oxygen III Nebula Filter - \u003cbr\u003eFits 1.25\" Eyepieces\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNarrowband Nebula Filter\u003c\/li\u003e\n\u003cli\u003eUseful for viewing objects that glow in O-III light\u003c\/li\u003e\n\u003cli\u003eBandwidth of 483 nm to 511 nm, peak at 496 nm\u003c\/li\u003e\n\u003cli\u003e96.7% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 1.25\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the highest contrast Nebula Filter in the series, a Narrowband line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in O-III emission light. Other types of objects that glow in all parts of the visible spectrum (e.g. galaxies) are reduced visibly, but some normally invisible regions of nebulae are clearly visible. This filter fits all standard 1.25-inch eyepieces and filter wheels.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329031489,"sku":"EXP-310205","price":151.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310205_M.jpg?v=1776458936"},{"product_id":"explore-scientific-ultra-high-contrast-uhc-nebula-filter-310215","title":"Explore Scientific Ultra High Contrast UHC Nebula Filter - 1.25\" - 310215","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Ultra High Contrast Nebula Filter - \u003cbr\u003eFits 1.25\" Eyepieces\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-High Contrast Nebula Filter\u003c\/li\u003e\n\u003cli\u003eUseful for viewing nebulae\u003c\/li\u003e\n\u003cli\u003eBandwidth of 458 nm to 508 nm, peak at 488 nm\u003c\/li\u003e\n\u003cli\u003e96.7% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 1.25\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis Explore Scientific Ultra-High Contrast Nebula Filter is an ultra-high contrast narrow-band filter, designed for observing the broad range of nebulae with 1.25-inch standard eyepieces or filter wheels. The bandpass of this filter is tighter than the CLS Nebula Filter, with specs of 458 nm to 508 nm, with a peak at 488 nm, thereby blocking even more light from artificial lights and airglow. If you want to really get the best view of nebulae, this is a must-have accessory for your telescope.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329066881,"sku":"EXP-310215","price":151.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310205_M_97212b17-8247-4f89-80ff-cd4c655d8917.jpg?v=1776459147"},{"product_id":"explore-scientific-cls-city-light-supression-filter-310225","title":"Explore Scientific CLS City Light Suppression Filter - 310225","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Nebula Filter CLS 1.25\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLight Pollution Filter for City Light Suppression\u003c\/li\u003e\n\u003cli\u003eUseful where you do not have a dark-sky site\u003c\/li\u003e\n\u003cli\u003eObserve deep-sky objects from brighter areas\u003c\/li\u003e\n\u003cli\u003eIncrease contrast of deep-sky objects\u003c\/li\u003e\n\u003cli\u003eRange: 436 nm to 536 nm; peaks at 488 nm\u003c\/li\u003e\n\u003cli\u003e98.3% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 1.25\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a general-purpose light-pollution reduction filter which fits into your 1.25\" eyepieces that have internal (female) filter threads. The Explore Scientific Nebula City Light Suppression (CLS) Filter 1.25\" is designed for observing a broad range of deep sky objects including nebulae and galaxies. The Nebula Filter CLS 1.25\" from Explore Scientific does a good job of increasing contrast, providing a darker sky background. It does this by filtering out the wavelengths of light commonly found in municipal-based (City lights) light pollution, while allowing the light from nebulae and galaxies to pass through so you can see them better. It has a total transmission specification of 98.3%.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329073729,"sku":"EXP-310225","price":151.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310225_M.jpg?v=1776459209"},{"product_id":"explore-scientific-h-beta-narrowband-filter-310235","title":"Explore Scientific H-Beta Narrowband Filter - 1.25\"- 310235","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific H-Beta Filter 1.25\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNarrowband Filter for H-Beta sources\u003c\/li\u003e\n\u003cli\u003eUseful where you do not have a dark-sky site\u003c\/li\u003e\n\u003cli\u003eObserve deep-sky nebulae from brighter areas\u003c\/li\u003e\n\u003cli\u003eIncrease contrast of deep-sky objects\u003c\/li\u003e\n\u003cli\u003eRange: 478 nm to 496 nm; peaks at 489 nm\u003c\/li\u003e\n\u003cli\u003e94.5% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 1.25\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a stray light reduction filter which fits into your 1.25\" eyepieces that have internal (female) filter threads. The Explore Scientific Narrowband H-Beta Filter 1.25\" is designed for observing deep sky objects which glow in H-Beta light, and it is tuned specifically to pass the H-beta wavelength band of light. Hydrogen is the most abundant element in the Universe and many nebulae glow in the H-beta light. The H-Beta Narrowband Filter 1.25\" from Explore Scientific does a good job of increasing contrast, providing a darker sky background. It does this by filtering out all the other wavelengths of light, while allowing the light from H-Beta nebulae or other sources to pass through so you can see them better. It has a total transmission specification of 94.5%.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329084417,"sku":"EXP-310235","price":178.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310235_M.jpg?v=1776458953"},{"product_id":"explore-scientific-2-nd-0-9-filter-310240","title":"Explore Scientific ND 0.9 Filter - 2\" - 310240","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Neutral Density Filter ND 0.9 - \u003cbr\u003eFits 2\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNeutral Density Filter\u003c\/li\u003e\n\u003cli\u003eUseful for viewing the Moon\u003c\/li\u003e\n\u003cli\u003eUse for viewing close double stars, when one is too bright\u003c\/li\u003e\n\u003cli\u003eView the Moon in comfort\u003c\/li\u003e\n\u003cli\u003eNeutral density of 0.9\u003c\/li\u003e\n\u003cli\u003e13% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 2\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a Neutral Density filter which fits into your 2\" eyepieces that have internal (female) filter threads. The Explore Scientific neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4\" (10.2 cm) and larger in aperture. The ND96 filter from Explore Scientific may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness. It has a density value of 0.9 ND. It has a total transmission specification of 13%. Fits 2\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329098369,"sku":"EXP-310240","price":82.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2moon_1.jpeg?v=1776459055"},{"product_id":"explore-scientific-o-iii-nebula-filter-310200","title":"Explore Scientific O-III Nebula Filter - 2\" - 310200","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Oxygen III Nebula Filter - \u003cbr\u003eFits 2\" Eyepieces\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNarrowband Nebula Filter\u003c\/li\u003e\n\u003cli\u003eUseful for viewing objects that glow in O-III light\u003c\/li\u003e\n\u003cli\u003eBandwidth of 483 nm to 511 nm, peak at 496 nm\u003c\/li\u003e\n\u003cli\u003e96.7% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 2\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the highest contrast Nebula Filter in the series, a Narrowband line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in O-III emission light. Other types of objects that glow in all parts of the visible spectrum (e.g. galaxies) are reduced visibly, but some normally invisible regions of nebulae are clearly visible. This filter fits all standard 2\" eyepieces and filter wheels.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329108993,"sku":"EXP-310200","price":192.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310200_M.jpg?v=1776459273"},{"product_id":"explore-scientific-ultra-high-contrast-uhc-nebula-filter-310210","title":"Explore Scientific Ultra High Contrast UHC Nebula Filter - 2\" - 310210","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Ultra High Contrast UHC Nebula Filter - Fits 2\" Eyepieces\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-High Contrast Nebula Filter\u003c\/li\u003e\n\u003cli\u003eUseful for viewing nebulae\u003c\/li\u003e\n\u003cli\u003eBandwidth of 458 nm to 508 nm, peak at 488 nm\u003c\/li\u003e\n\u003cli\u003e96.7% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 2\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis Explore Scientific Ultra-High Contrast (UHC) Nebula Filter is an ultra-high contrast narrow-band filter, designed for observing the broad range of nebulae with 2-inch standard eyepieces or filter wheels. The bandpass of this filter is tighter than the CLS Nebula Filter, with specs of 458 nm to 508 nm, with a peak at 488 nm, thereby blocking even more light from artificial lights and airglow. If you want to really get the best view of nebulae, this is a must-have accessory for your telescope and your 2\" eyepieces.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329117377,"sku":"EXP-310210","price":192.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310210_M.jpg?v=1776459129"},{"product_id":"explore-scientific-2-cls-nebula-filter-310220","title":"Explore Scientific CLS Nebula Filter - 2\" - 310220","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific Nebula Filter CLS 2\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLight Pollution Filter for City Light Suppression\u003c\/li\u003e\n\u003cli\u003eUseful where you do not have a dark-sky site\u003c\/li\u003e\n\u003cli\u003eObserve deep-sky objects from brighter areas\u003c\/li\u003e\n\u003cli\u003eIncrease contrast of deep-sky objects\u003c\/li\u003e\n\u003cli\u003eRange: 436 nm to 536 nm; peaks at 488 nm\u003c\/li\u003e\n\u003cli\u003e98.3% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 2\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a general-purpose light-pollution reduction filter which fits into your 2\" eyepieces that have internal (female) filter threads. The Explore Scientific Nebula City Light Suppression (CLS) Filter 2\" is designed for observing a broad range of deep sky objects including nebulae and galaxies. The Nebula Filter CLS 2\" from Explore Scientific does a good job of increasing contrast, providing a darker sky background. It does this by filtering out the wavelengths of light commonly found in municipal-based (City lights) light pollution, while allowing the light from nebulae and galaxies to pass through so you can see them better. It has a total transmission specification of 98.3%.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329122945,"sku":"EXP-310220","price":164.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310220_M.jpg?v=1776458991"},{"product_id":"explore-scientific-h-beta-narrowband-filter-310230","title":"Explore Scientific H-Beta Narrowband Filter - 2\" - 310230","description":"\u003ch3 style=\"text-align: center;\"\u003eExplore Scientific H-Beta Filter 2\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNarrowband Filter for H-Beta sources\u003c\/li\u003e\n\u003cli\u003eUseful where you do not have a dark-sky site\u003c\/li\u003e\n\u003cli\u003eObserve deep-sky nebulae from brighter areas\u003c\/li\u003e\n\u003cli\u003eIncrease contrast of deep-sky objects\u003c\/li\u003e\n\u003cli\u003eRange: 478 nm to 496 nm; peaks at 489 nm\u003c\/li\u003e\n\u003cli\u003e94.5% Transmission\u003c\/li\u003e\n\u003cli\u003eFits 2\" Eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a stray light reduction filter which fits into your 2\" eyepieces that have internal (female) filter threads. The Explore Scientific Narrowband H-Beta Filter 2\" is designed for observing deep sky objects which glow in H-Beta light, and it is tuned specifically to pass the H-beta wavelength band of light. Hydrogen is the most abundant element in the Universe and many nebulae glow in the H-beta light. The H-Beta Narrowband Filter 2\" from Explore Scientific does a good job of increasing contrast, providing a darker sky background. It does this by filtering out all the other wavelengths of light, while allowing the light from H-Beta nebulae or other sources to pass through so you can see them better. It has a total transmission specification of 94.5%.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":16329130049,"sku":"EXP-310230","price":247.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/0310230_M.jpg?v=1776458896"},{"product_id":"celestron-moon-filter-1-25-94119-a","title":"Celestron Moon Filter - 1.25\" - 94119-A","description":"\u003ch3 style=\"text-align: center;\"\u003eCelestron Moon Filter\u003c\/h3\u003e\n\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eCelestron 1.25” Moon Filter \u003c\/span\u003eReduces glare and increases contrast of the Moon\u003c\/li\u003e\n\u003cli\u003eUseful for extra bright planets as well as terrestrial viewing over sand or snow\u003c\/li\u003e\n\u003cli\u003eThreads onto most 1.25” eyepieces in seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Celestron Moon Filter simply screws into the insert barrel of most 1.25” eyepieces.  It only takes a second or two to transform your regular eyepiece into one suited for lunar observations.  The Moon Filter by Celestron reduces the amount of light (from the Moon) which enters your eye from your telescope. A Moon Filter is also helpful when observing Venus or bright terrestrial scenes. This filter is NOT suitable for viewing the Sun! It should never by used as a solar viewing filter!\u003c\/p\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"Body\"\u003eThe Moon has the distinction of being the most often viewed celestial object through backyard telescopes.  It is undoubtedly beautiful and mysterious, and is one of those constants in our lives that connects us to every other being on our planet.  Regardless of who we are or where we live or travel, all people on Earth look at the same moon. \u003c\/p\u003e\n\u003cp class=\"Body\"\u003eIt is difficult to look at the Moon through a telescope and see all of the details due to its brightness.  Our eyes are not ready for the bright beam of light that emits from the eyepiece, and they “stop down.” This effect can reduce our eye's resolving power. When amateur astronomers observe the Moon, we use a moon filter. A Celestron Moon Filter provides similar benefits to those of sunglasses...our eye relaxes and opens up to let us see more detail.  This is especially important when observing the Moon when it is near full.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":27650105601,"sku":"CEL-94119-A","price":18.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/94119A.jpg?v=1776458950"},{"product_id":"baader-single-polarizing-filter-1-fpol-1","title":"Baader 125\" Single Polarizing Filter - FPOL-1","description":"\u003ch3 style=\"text-align: center;\"\u003eBaader Single Polarizing Filter 1¼\"\u003c\/h3\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cul\u003e\n\u003cli\u003eBaader 1.25\" Polarizing Filter - Ideal for solar and planetary observations.\u003c\/li\u003e\n\u003cli\u003eFor solar work in conjunction with Baader AstroSolar Safety Film or Baader Herschel Wedge Prism (never use any eyepiece filter for solar observation without objective front filter).\u003c\/li\u003e\n\u003cli\u003eEnhances contrast during planetary observation.\u003c\/li\u003e\n\u003cli\u003eSealed coating edges prevent air or moisture from entering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe filter can also be used with a Baader Hershel Wedge to provide an adjustable brightness. Positioned between the Baader Hershel Wedge and Eyepiece the filter\/eyepiece combination can then be rotated to adjust brightness.  \u003c\/span\u003eTo screw into 1¼ or 2\" eyepieces\/threads. Useful in Lunar and Solar observations to limit brightness and increasing contrast. Polarizes the transmitted light.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":33095948929,"sku":"BAA-FPOL-1","price":62.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2_976e08c6-fcef-45ba-b98f-7a59f401d237.jpg?v=1776459115"},{"product_id":"baader-double-polarizing-filter-1-fpol-1d","title":"Baader Double Polarizing Filter 1¼\" - FPOL-1D","description":"\u003ch3 style=\"text-align: center;\"\u003eBaader Double Polarizing Filter 1¼\"\u003c\/h3\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Double 1.25\" Polarizing Filter - Ideal for solar and planetary observations.\u003c\/li\u003e\n\u003cli\u003eFor solar work in conjunction with Baader AstroSolar Safety Film or Baader Herschel Wedge Prism (never use any eyepiece filter for solar observation without objective front filter).\u003c\/li\u003e\n\u003cli\u003eEnhances contrast during planetary observation.\u003c\/li\u003e\n\u003cli\u003eSealed coating edges prevent air or moisture from entering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe filter can also be used with a Baader Hershel Wedge to provide an adjustable brightness. Positioned between the Baader Hershel Wedge and Eyepiece the filter\/eyepiece combination can then be rotated to adjust brightness.  \u003c\/span\u003eTo screw into 1¼ or 2\" eyepieces\/threads. Useful in Lunar and Solar observations to limit brightness and increasing contrast. Polarizes the transmitted light.\u003c\/p\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eThe filter can also be unscrewed. A filter has a normal version, the other rotatable. The filter with the normal version can be used as normal single polarization filter which is useful for a Herschel Wedge.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e \u003ccol span=\"1\" width=\"250\"\u003e \u003c\/colgroup\u003e\n\u003ccaption\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMANUFACTURER\u003c\/td\u003e\n\u003ctd\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU (#)\u003c\/td\u003e\n\u003ctd\u003e2408340\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWEIGHT (KG)\u003c\/td\u003e\n\u003ctd\u003e0.042\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRANSMISSION RANGE\u003c\/td\u003e\n\u003ctd\u003efull Spectrum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-COATING\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSPECIAL FEATURES\u003c\/td\u003e\n\u003ctd\u003edouble polarizing filter for stepless brightness adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER SIZE\u003c\/td\u003e\n\u003ctd\u003e1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVISUAL OR IMAGING?\u003c\/td\u003e\n\u003ctd\u003evisual, imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER USAGE\u003c\/td\u003e\n\u003ctd\u003eLunar, Planetary, Solar, Specialty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER MOUNTED\u003c\/td\u003e\n\u003ctd\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTYPE OF FILTER\u003c\/td\u003e\n\u003ctd\u003eNeutral Density, Polarizing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSINGLE OR SET?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER SHAPE\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":33095979393,"sku":"BAA-FPOL-1D","price":117.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/screencapture-baader-planetarium-en-baader-double-polarizing-filter-html-1492282742091.jpg?v=1776459285"},{"product_id":"baader-dslr-astro-conversion-filter-for-canon-eos-300-facf-1","title":"Baader DSLR-Astro Conversion Filter for Canon EOS 300 - FACF-1","description":"\u003ch3 style=\"text-align: center;\"\u003eBaader DSLR-Astro Conversion Filter for Canon EOS 300\u003c\/h3\u003e\n\u003cp\u003eThis Baader DSLR-Astro Conversion Filter for Canon EOS 300 camera is a color correction filter used for H-alpha, IR-Cut, UV-Cut. It is dielectrically coated, and optically flat polished for highest quality imaging results.\u003c\/p\u003e\n\u003cp\u003eBaader's DSLR conversion filters replace the factory correcting filter (\"hot mirror\"). The special substrate is coated with Baader's renowned coatings. Imagers can now gain full efficiency at H-Alpha wavelengths, and at full resolution (the Baader filter eliminates the Canon factory moire filter, which reduces resolution on astronomical subjects). The thickness of the Baader DSLR filters have been designed to maintain the correct factory focal point (please note: The Baader filter is intentionally of a different thickness than the factory filter - this is required to match the effective index of refraction of the factory 'sandwich' filter).\u003c\/p\u003e\n\u003cp\u003eThe Baader DSLR Conversion Filters are produced to the same specifications and by the same processes used for all of their other premium Baader Astronomical Filters. Each filter is optically polished to 1\/4 wave and most importantly the ionbeam hardened coatings are applied AFTER cutting and polishing. This important aspect guarantees that your coatings will not peel or degrade due to the softer coatings and edge damage caused by post-cutting operations used by some other filters to cut costs. With a Baader filter, you never need to worry that your internal DSLR Conversion filter will fail prematurely.\u003c\/p\u003e\n\u003cp\u003eThis filter is intended for amateurs that are comfortable replacing their camera's stock filter. Please Note: For best performance we recommend installing the filter with the coated (pinkish) side facing out (FACF-1, II, III).\u003c\/p\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e \u003ccol span=\"1\" width=\"250\"\u003e \u003c\/colgroup\u003e\n\u003ccaption\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMANUFACTURER\u003c\/td\u003e\n\u003ctd\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU (#)\u003c\/td\u003e\n\u003ctd\u003e2459211\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWEIGHT (KG)\u003c\/td\u003e\n\u003ctd\u003e0.012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRANSMISSION RANGE\u003c\/td\u003e\n\u003ctd\u003e400 – 700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-COATING\u003c\/td\u003e\n\u003ctd\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER SIZE\u003c\/td\u003e\n\u003ctd\u003eother\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVISUAL OR IMAGING?\u003c\/td\u003e\n\u003ctd\u003eimaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER USAGE\u003c\/td\u003e\n\u003ctd\u003eColor Correction, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER MOUNTED\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSINGLE OR SET?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER SHAPE\u003c\/td\u003e\n\u003ctd\u003erectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":33098942529,"sku":"BAA-FACF-1","price":124.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/Untitled_83549810-ef9b-473c-be80-262a65e4787d.jpg?v=1776459278"},{"product_id":"baader-polarization-filter-2-double-fpol-2d","title":"Baader Variable Polarization Filter  - 2\" - FPOL-2D","description":"\u003ccenter\u003e\n\u003ch3\u003eBaader Polarization Filter 2\" Double\u003c\/h3\u003e\n\u003c\/center\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cul\u003e\n\u003cli\u003eBaader 2\" Double Polarizing Filter - Ideal for solar and planetary observations\u003c\/li\u003e\n\u003cli\u003eFor solar work in conjunction with Baader AstroSolar Safety Film or Baader Herschel Wedge Prism (never use any eyepiece filter for solar observation without objective front filter)\u003c\/li\u003e\n\u003cli\u003eRotatable filter cell allows continous adjustment of brightness for comfortable viewing\u003c\/li\u003e\n\u003cli\u003eEnhances contrast during planetary observation\u003c\/li\u003e\n\u003cli\u003eSealed coating edges to prevent incursion of air or moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eTo screw into 1¼ or 2\" eyepieces\/threads. The two filters can be rotated against each other to always be able to achieve comfortable brightness level for moon observations, independent of moon phase. The Baader Double Polarizing Filter can also be used for solar observations in combination with an objective sun filter from Astro Solar Film.\u003c\/p\u003e\n\u003cp\u003eThe filter can also be unscrewed. A filter has a normal version, the other rotatable. The filter with the normal version can be used as normal single polarization filter which is useful for a Herschel Wedge.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e \u003ccol span=\"1\" width=\"250\"\u003e \u003c\/colgroup\u003e\n\u003ccaption\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacurer:\u003c\/td\u003e\n\u003ctd\u003eBaader\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU (#)\u003c\/td\u003e\n\u003ctd\u003e2408344\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWEIGHT (KG)\u003c\/td\u003e\n\u003ctd\u003e0.078\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRANSMISSION RANGE\u003c\/td\u003e\n\u003ctd\u003efull Spectrum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-COATING\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSPECIAL FEATURES\u003c\/td\u003e\n\u003ctd\u003eDouble polarizing filter for step-less brightness adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER SIZE\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVISUAL OR IMAGING?\u003c\/td\u003e\n\u003ctd\u003evisual, imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER USAGE\u003c\/td\u003e\n\u003ctd\u003eLunar, Planetary, Solar, Specialty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER MOUNTED\u003c\/td\u003e\n\u003ctd\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTYPE OF FILTER\u003c\/td\u003e\n\u003ctd\u003eNeutral Density, Polarizing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSINGLE OR SET?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFILTER SHAPE\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":33101103233,"sku":"BAA-FPOL-2D","price":169.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2_double_pol.png?v=1776459082"},{"product_id":"tele-vue-bandmate-type-2-nebustar-2-filter-b2n-0200","title":"Tele Vue Bandmate Type 2 Nebustar 2\" Filter - B2N-0200","description":"\u003ch3 style=\"text-align: center;\"\u003eTele Vue Bandmate Type 2 Nebustar 2\" Filter\u003c\/h3\u003e\n\u003cp\u003eTele Vue introduces their new line of Bandmate Filters. This is the Tele Vue Bandmate Type 2 Nebustar 2\" Filter.\u003c\/p\u003e\n\u003cp\u003eThe first thing you’ll notice about the Tele Vue Bandmate filters is that these products are produced for them in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. \"Do it better, or don’t do it at all.\" The products, the customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler of Tele Vue and Gerd Neumann of Astronomik had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passbands to thread tolerances, the filter industry seems like the “wild west” of astronomical products. Tele Vue wanted to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand.\u003c\/p\u003e\n\u003cp\u003eGerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started in Amateur Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you'll discover about Tele Vue Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high-power space to ensure no image degradation occurs. Astronomik tests their filters on a spectrograph to ensure the coating meets specifications. They are mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks, and serialized, all to insure customer satisfaction. All Tele Vue Bandmate filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eThe Nebustar filter is a unique narrow band design made specifically for Tele Vue. Unlike other UHC designs, Nebustar blocks red wavelengths normally passed by typical UHC filters. The design eliminates star bloat to produce sharper, more natural looking stars along with enhanced nebulosity. Astronomik is proud to deliver this exclusive filter through Tele Vue and wishes that customers \"enjoy magnificent observing sessions with the most recent development for visual observers: The TeleVue Type 2 Nebustar Filter in 2\" size.\"\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003eNarrow Band Ultra High Contrast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission:\u003c\/td\u003e\n\u003ctd\u003e500 nanometer, approximately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wavelength Blocking:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size:\u003c\/td\u003e\n\u003ctd\u003e2\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty:\u003c\/td\u003e\n\u003ctd\u003e10 years (for manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":8644005953649,"sku":"TEL-B2N-0200","price":451.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/B2N-0200_Bandmate-Type-2-Nebustar.jpg?v=1776459186"},{"product_id":"tele-vue-bandmate-type-2-nebustar-1-25-filter-b2n-0125","title":"Tele Vue Bandmate Type 2 Nebustar 1.25\" Filter - B2N-0125","description":"\u003ch3 style=\"text-align: center;\"\u003eTele Vue Bandmate Type 2 Nebustar 1.25\" Filter\u003c\/h3\u003e\n\u003cp\u003eTele Vue introduces their new line of Bandmate Filters. This is the Tele Vue Bandmate Type 2 Nebustar 1.25\" Filter.\u003c\/p\u003e\n\u003cp\u003eThe first thing you’ll notice about the Tele Vue Bandmate filters is that these products are produced for them in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. \"Do it better, or don’t do it at all.\" The products, the customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler of Tele Vue and Gerd Neumann of Astronomik had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passbands to thread tolerances, the filter industry seems like the “wild west” of astronomical products. Tele Vue wanted to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand.\u003c\/p\u003e\n\u003cp\u003eGerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started in Amateur Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you'll discover about Tele Vue Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high-power space to ensure no image degradation occurs. Astronomik tests their filters on a spectrograph to ensure the coating meets specifications. They are mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks, and serialized, all to insure customer satisfaction. All Tele Vue Bandmate filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eThe Nebustar filter is a unique narrow band design made specifically for Tele Vue. Unlike other UHC designs, Nebustar blocks red wavelengths normally passed by typical UHC filters. The design eliminates star bloat to produce sharper, more natural looking stars along with enhanced nebulosity. Astronomik is proud to deliver this exclusive filter through Tele Vue and wishes that customers \"enjoy magnificent observing sessions with the most recent development for visual observers: The TeleVue Type 2 Nebustar Filter in 1.25\" size.\"\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003eNarrow Band Ultra High Contrast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission:\u003c\/td\u003e\n\u003ctd\u003e500 nanometer, approximately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wavelength Blocking:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size:\u003c\/td\u003e\n\u003ctd\u003e1.25\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty:\u003c\/td\u003e\n\u003ctd\u003e10 years (for manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":8644006215793,"sku":"TEL-B2N-0125","price":204.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/B2N-0125_Bandmate-Type-2-Nebustar.jpg?v=1776459323"},{"product_id":"tele-vue-bandmate-type-2-oiii-2-filter-b2o-0200","title":"Tele Vue Bandmate Type 2 OIII 2\" Filter - B2O-0200","description":"\u003ch3 style=\"text-align: center;\"\u003eTele Vue Bandmate Type 2 OIII 2\" Filter\u003c\/h3\u003e\n\u003cp\u003eTele Vue introduces their new line of Bandmate Filters. This is the Tele Vue Bandmate Type 2 OIII 2\" Filter.\u003c\/p\u003e\n\u003cp\u003eThe first thing you’ll notice about the Tele Vue Bandmate filters is that these products are produced for them in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. \"Do it better, or don’t do it at all.\" The products, the customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler of Tele Vue and Gerd Neumann of Astronomik had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passbands to thread tolerances, the filter industry seems like the “wild west” of astronomical products. Tele Vue wanted to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand.\u003c\/p\u003e\n\u003cp\u003eGerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started in Amateur Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you'll discover about Tele Vue Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high-power space to ensure no image degradation occurs. Astronomik tests their filters on a spectrograph to ensure the coating meets specifications. They are mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks, and serialized, all to insure customer satisfaction. All Tele Vue Bandmate filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eThe OIII filter is a typical representative OIII offering available from Astronomik's product line, but these now have the tight specification tolerances and additional assurance of Tele Vue's testing guarantee.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003eNarrow Band OIII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission:\u003c\/td\u003e\n\u003ctd\u003eOxygenIII Emission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wavelength Blocking:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size:\u003c\/td\u003e\n\u003ctd\u003e2\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty:\u003c\/td\u003e\n\u003ctd\u003e10 years (for manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":8644007952497,"sku":"TEL-B2O-0200","price":364.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/B2O-0200_Bandmate-Type-2-OIII.jpg?v=1776459118"},{"product_id":"tele-vue-bandmate-type-2-oiii-1-25-filter-b2o-0125","title":"Tele Vue Bandmate Type 2 OIII 1.25\" Filter - B2O-0125","description":"\u003ch3 style=\"text-align: center;\"\u003eTele Vue Bandmate Type 2 OIII 1.25\" Filter\u003c\/h3\u003e\n\u003cp\u003eTele Vue introduces their new line of Bandmate Filters. This is the Tele Vue Bandmate Type 2 OIII 1.25\" Filter.\u003c\/p\u003e\n\u003cp\u003eThe first thing you’ll notice about the Tele Vue Bandmate filters is that these products are produced for them in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. \"Do it better, or don’t do it at all.\" The products, the customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler of Tele Vue and Gerd Neumann of Astronomik had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passbands to thread tolerances, the filter industry seems like the “wild west” of astronomical products. Tele Vue wanted to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand.\u003c\/p\u003e\n\u003cp\u003eGerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started in Amateur Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you'll discover about Tele Vue Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high-power space to ensure no image degradation occurs. Astronomik tests their filters on a spectrograph to ensure the coating meets specifications. They are mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks, and serialized, all to insure customer satisfaction. All Tele Vue Bandmate filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eThe OIII filter in 1.25\"size is a typical representative OIII offering available from Astronomik's product line, but these now have the tight specification tolerances and additional assurance of Tele Vue's testing guarantee.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003eNarrow Band OIII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission:\u003c\/td\u003e\n\u003ctd\u003eOxygenIII Emission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wavelength Blocking:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size:\u003c\/td\u003e\n\u003ctd\u003e1.25\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty:\u003c\/td\u003e\n\u003ctd\u003e10 years (for manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":8644008509553,"sku":"TEL-B2O-0125","price":200.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/B2O-0125_Bandmate-Type-2-OIII.jpg?v=1776459198"},{"product_id":"tele-vue-bandmate-type-2-h-2-filter-b2h-0200","title":"Tele Vue Bandmate Type 2 Hβ 2\" Filter - B2H-0200","description":"\u003ch3 style=\"text-align: center;\"\u003eTele Vue Bandmate Type 2 Hβ 2\" Filter\u003c\/h3\u003e\n\u003cp\u003eTele Vue introduces their new line of Bandmate Filters. This is the Tele Vue Bandmate Type 2 Hβ 2\" Filter.\u003c\/p\u003e\n\u003cp\u003eThe first thing you’ll notice about the Tele Vue Bandmate filters is that these products are produced for them in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. \"Do it better, or don’t do it at all.\" The products, the customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler of Tele Vue and Gerd Neumann of Astronomik had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passbands to thread tolerances, the filter industry seems like the “wild west” of astronomical products. Tele Vue wanted to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand.\u003c\/p\u003e\n\u003cp\u003eGerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started in Amateur Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you'll discover about Tele Vue Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high-power space to ensure no image degradation occurs. Astronomik tests their filters on a spectrograph to ensure the coating meets specifications. They are mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks, and serialized, all to insure customer satisfaction. All Tele Vue Bandmate filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eThe Hβ filter in 2\" size is a typical representative Hβ offering available from Astronomik's product line, but these now have the tight specification tolerances and additional assurance of Tele Vue's testing guarantee.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003eNarrow Band Hβ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission:\u003c\/td\u003e\n\u003ctd\u003eHydrogenβ Emission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wavelength Blocking:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size:\u003c\/td\u003e\n\u003ctd\u003e2\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty:\u003c\/td\u003e\n\u003ctd\u003e10 years (for manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":8644011950193,"sku":"TEL-B2H-0200","price":364.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/B2H-0200_Bandmate-Type-2-HBeta.jpg?v=1776459281"},{"product_id":"tele-vue-bandmate-type-2-h-1-25-filter-b2h-0125","title":"Tele Vue Bandmate Type 2 Hβ 1.25\" Filter - B2H-0125","description":"\u003ch3 style=\"text-align: center;\"\u003eTele Vue Bandmate Type 2 Hβ 1.25\" Filter\u003c\/h3\u003e\n\u003cp\u003eTele Vue introduces their new line of Bandmate Filters. This is the Tele Vue Bandmate Type 2 Hβ 1.25\" Filter.\u003c\/p\u003e\n\u003cp\u003eThe first thing you’ll notice about the Tele Vue Bandmate filters is that these products are produced for them in Germany by Astronomik. Tele Vue and Astronomik are two relatively small companies that adhere to the same philosophy. \"Do it better, or don’t do it at all.\" The products, the customer, and night sky deserve it.\u003c\/p\u003e\n\u003cp\u003eDavid Nagler of Tele Vue and Gerd Neumann of Astronomik had crossed paths at astronomy shows for years. Both have had their frustrations with the filter business. From passbands to thread tolerances, the filter industry seems like the “wild west” of astronomical products. Tele Vue wanted to develop a long-term supplier of state-of-the-art, custom filters and approached Astronomik with the idea of reintroducing Tele Vue’s line of premium quality Bandmate filters; guaranteed to perform and fit, with uniformity beyond any competitive brand.\u003c\/p\u003e\n\u003cp\u003eGerd and Eric of Astronomik were excited with the idea of a partnership with Tele Vue. “When we started in Amateur Astronomy, Tele Vue already was a legendary brand known for its outstanding quality of their telescopes and eyepieces. Today we are proud to team up with them to share our knowledge and experience in filter design and production and bring the best filters possible to all astronomers worldwide.”\u003c\/p\u003e\n\u003cp\u003eThe distinction you'll discover about Tele Vue Bandmate filters is their consistency, achieved by keeping control of the manufacturing and quality control processes each company does so well. All the materials are sourced in Germany. Each filter is: optically tested by Tele Vue in high-power space to ensure no image degradation occurs. Astronomik tests their filters on a spectrograph to ensure the coating meets specifications. They are mechanically tested for fit, cosmetically inspected for pinholes, digs, and sleeks, and serialized, all to insure customer satisfaction. All Tele Vue Bandmate filters are backed with a 10-year warranty against manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eThe Hβ filter in 1.25\" size is a typical representative Hβ offering available from Astronomik's product line, but these now have the tight specification tolerances and additional assurance of Tele Vue's testing guarantee.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003eNarrow Band Hβ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission:\u003c\/td\u003e\n\u003ctd\u003eHydrogenβ Emission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed Wavelength Blocking:\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size:\u003c\/td\u003e\n\u003ctd\u003e1.25\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty:\u003c\/td\u003e\n\u003ctd\u003e10 years (for manufacturing defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":8644014571633,"sku":"TEL-B2H-0125","price":200.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/B2H-0125_Bandmate-Type-2-HBeta.jpg?v=1776459215"},{"product_id":"celestron-neutral-density-moon-filter-1-25-94105","title":"Celestron Neutral Density Moon Filter - 1.25\" - 94105","description":"\u003ch3 style=\"text-align: center;\"\u003eCelestron Neutral Density Moon Filter - 1.25\"\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReduces brightness and cuts glare, increasing clarity of the Moon, Venus, and bright double stars\u003c\/li\u003e\n\u003cli\u003eTrue neutral density filter provides accurate image\u003c\/li\u003e\n\u003cli\u003e13% light transmission\u003c\/li\u003e\n\u003cli\u003eProvides a true color image, while reducing intensity\u003c\/li\u003e\n\u003cli\u003eThreads on to any Celestron 1.25” eyepiece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis Celestron Neutral Density Moon Filter attaches to a 1.25” eyepiece to reduce the amount of light entering the eyepiece by 87%. The Moon is one of the most viewed objects in the sky, but due to its excessive brightness is difficult to observe directly. You shouldn’t be deprived of its features due to brightness. This filter only allows 13% of the telescope’s light to reach the eyepiece, making it a lot more comfortable to view. Unlike color filters, the Neutral Density Moon filter affects all colors of the visible spectrum evenly, darkening the image without shifting the color. Some Moon filters are #58 Green filters, and while they work well for cutting glare, they also add an unnatural green cast to the Moon’s surface. The Neutral Density Moon filter from Celestron gives you the true color images you want.\u003c\/p\u003e\n\u003cp\u003eThis filter is also great for helping to cut glare and increase contrast when viewing bright planets like Venus or Jupiter, or even to dim bright stars when splitting close double stars. The filter is glass with an aluminum cell that attaches to 1.25” eyepieces and is cleaverly threaded on both sides of its cell so it can be stacked with color filters. This Moon Filter by Celestron has very light weight so will not affect your eyepiece installation.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize diameter\u003c\/td\u003e\n\u003ctd\u003e31.75 mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Housing\u003c\/td\u003e\n\u003ctd\u003eAluminum cell housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStackable Filter\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Transmission\u003c\/td\u003e\n\u003ctd\u003e13%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions Filter only\u003c\/td\u003e\n\u003ctd\u003e31 mm x 11.5 mm (1.22\" x .45\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions Case only\u003c\/td\u003e\n\u003ctd\u003e54.5 mm x 43 mm x 18 mm (2.14\" x 1.7\" x .7\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions Packaging\u003c\/td\u003e\n\u003ctd\u003e60 mm x 50 mm x 23 mm (2.36\" x 2\" x .9\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight Filter only\u003c\/td\u003e\n\u003ctd\u003e0.21 oz (6 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight Case only\u003c\/td\u003e\n\u003ctd\u003e0.5 oz (14 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Package Weight\u003c\/td\u003e\n\u003ctd\u003e0.88 oz (25 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":20424249311345,"sku":"CEL-94105","price":28.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/94105_ND_0-9_Neutral_Density_Filter.jpg?v=1776458947"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/collections\/2275-1-thumb.jpg?v=1776870186","url":"https:\/\/khanscope.com\/collections\/filters-accessories.oembed?page=2","provider":"Khan Scope Centre","version":"1.0","type":"link"}