{"title":"Imaging Filters \u0026 Filterwheels","description":"\u003cspan data-mce-fragment=\"1\"\u003eFrom essential light pollution filters to specialized broadband and narrowband filters, our collection encompasses a range of cutting-edge options tailored to meet the diverse needs of astronomers and astrophotographers.\u003c\/span\u003e","products":[{"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":"starfield-5-x-1-25-ultra-thin-high-speed-motorized-filter-wheel-fw5125v4hs","title":"StarField 5 X 1.25\" Ultra Thin High Speed Motorized Filter Wheel - FW5125V4HS","description":"\u003cp\u003eThe StarField High Speed Ultra Thin Motorized 5-Position 1.25\" Filter Wheel is only 19 mm thick and weighs just 8.7 ounces, or 248 grams! Due to its diminutive size, this StarField filter wheel only adds 19 mm of back focus when used with StarField adapters.\u003c\/p\u003e\n\u003cp\u003eBecause this is the High Speed version, the StarField FW5125V4HS achieves carousel rotation speeds that are more than 5 times faster than the FW5125V4. The filter wheel is USB controlled and powered with an ASCOM driver, so no addition power supply is required.\u003c\/p\u003e\n\u003cp\u003eThe included filter carousel is designed to hold five threaded M28.5 x 0.6 filters (sold separately). The maximum filter cell height that can be accommodated is 11 mm with a thread length of no more than 4 mm.\u003c\/p\u003e\n\u003cstrong\u003eAdapters \u0026amp; Cables Included:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eT thread to T thread adapter\u003c\/li\u003e\n\u003cli\u003eT thread to C thread adapter\u003c\/li\u003e\n\u003cli\u003eT thread to 1.25\" barrel adapter\u003c\/li\u003e\n\u003cli\u003e3M USB interface cable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39768834998385,"sku":"SFO-FW5125V4HS","price":194.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5125v4_Standing.jpg?v=1776459159"},{"product_id":"starfield-8-x-1-25-ultra-thin-high-motorized-filter-wheel-fw8125v2","title":"StarField 8 X 1.25\" Ultra Thin Motorized Filter Wheel - FW8125V2","description":"\u003cp\u003eThe StarField Ultra Slim Motorized 8-Position 1.25\" Filter Wheel is only 0.7\" thick and measures just 7.6\" x 8\" x 0.7\", making it one of the smallest filter wheels on the market! Due to its diminutive size, this StarField filter wheel only adds 19 mm of back focus when used with StarField adapters.\u003c\/p\u003e\n\n\u003cp\u003eThe StarField 8x1.25 filter wheel is USB controlled and powered with an ASCOM driver, so no addition power supply is required.\u003c\/p\u003e\n\n\u003cp\u003eThe included filter carousel is designed to hold eight (8) threaded 1.25\" (M28 x 0.6) filters (sold separately). The maximum filter cell height is 10 mm, and the maximum thread length is 6 mm.\u003c\/p\u003e\n\n\u003cstrong\u003eAdapters \u0026amp; Cables Included:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eT thread male and female adapter\u003c\/li\u003e\n\u003cli\u003e2\" barrel adapter\u003c\/li\u003e\n\u003cli\u003e3M USB interface cable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39768835162225,"sku":"SFO-FW8125V2","price":495.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/FW736V1_3b0b9716-b10b-41bd-b82a-6e837f5dda45.jpg?v=1776458973"},{"product_id":"starfield-8-x-31mm-ultra-thin-high-motorized-filter-wheel-fw831v1","title":"StarField 8 X 31mm Ultra Thin Motorized Filter Wheel - FW831V1","description":"\u003cp\u003eThe StarField Ultra Slim Motorized 8-Position 31 mm Filter Wheel is only 0.7\" thick and measures just 7.6\" x 8\" x 0.7\", making it one of the smallest filter wheels on the market! Due to its diminutive size, this StarField filter wheel only adds 19 mm of back focus when used with StarField adapters.\u003c\/p\u003e\n\n\u003cp\u003eThe StarField 8x31 filter wheel is USB controlled and powered with an ASCOM driver, so no addition power supply is required.\u003c\/p\u003e\n\n\u003cp\u003eThe included filter carousel is designed to hold eight (8) 31 mm unmounted filters (sold separately). The maximum filter glass thickness allowable is 4 mm.\u003c\/p\u003e\n\n\u003cstrong\u003eAdapters \u0026amp; Cables Included:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eT thread male and female adapter\u003c\/li\u003e\n\u003cli\u003e2\" barrel adapter\u003c\/li\u003e\n\u003cli\u003e3M USB interface cable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39768835522673,"sku":"SFO-FW831V1","price":500.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/FW736V1_4f97f29b-69e4-453c-93c3-0c11dc4487fd.jpg?v=1776458898"},{"product_id":"starfield-7-x-36mm-ultra-thin-motorized-filter-wheel-fw736v1","title":"StarField 7 X 36mm Ultra Thin Motorized Filter Wheel - FW736V1","description":"\u003cp\u003eThe StarField Ultra Slim Motorized 7-Position 36 mm Filter Wheel is only 0.7\" thick and measures just 7.6\" x 8\" x 0.7\", making it one of the smallest filter wheels on the market! Due to its diminutive size, this StarField filter wheel only adds 19 mm of back focus when used with StarField adapters.\u003c\/p\u003e\n\n\u003cp\u003eThe StarField 7x36 filter wheel is USB controlled and powered with an ASCOM driver, so no addition power supply is required.\u003c\/p\u003e\n\n\u003cp\u003eThe included filter carousel is designed to hold seven (7) 36 mm unmounted filters (sold separately). The maximum filter glass thickness allowable is 4 mm.\u003c\/p\u003e\n\n\u003cstrong\u003eAdapters \u0026amp; Cables Included:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eT thread male and female adapter\u003c\/li\u003e\n\u003cli\u003e2\" barrel adapter\u003c\/li\u003e\n\u003cli\u003e3M USB interface cable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770471202929,"sku":"SFO-FW736V1","price":500.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/FW736V1.jpg?v=1776458946"},{"product_id":"starfield-5-x-2-ultra-thin-motorized-filter-wheel-fw5200v2","title":"StarField 5 X 2\" Ultra Thin Motorized Filter Wheel - FW5200V2","description":"\u003cp\u003eThe StarField Ultra Slim Motorized 5-Position 2\" Filter Wheel is only 0.7\" thick and measures just 7.6\" x 8\" x 0.7\", making it one of the smallest filter wheels on the market! Due to its diminutive size, this StarField filter wheel only adds 19 mm of back focus when used with StarField adapters.\u003c\/p\u003e\n\n\u003cp\u003eThe StarField 2\" filter wheel is USB controlled and powered with an ASCOM driver, so no addition power supply is required.\u003c\/p\u003e\n\n\u003cp\u003eThe included filter carousel is threaded for five standard M48 x 0.75\" filters (sold separately). The maximum filter cell height that can be accommodated is 10 mm with a thread length of no more than  6 mm.\u003c\/p\u003e\n\n\u003cstrong\u003eAdapters \u0026amp; Cables Included:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eT thread male and female adapter\u003c\/li\u003e\n\u003cli\u003e2\" barrel adapter\u003c\/li\u003e\n\u003cli\u003e3M USB interface cable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770473594993,"sku":"SFO-FW5200V2","price":465.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5x2inchFW.jpg?v=1776459239"},{"product_id":"starfield-filter-carousel-8-x-1-25-filter-wheel-fw8125car","title":"StarField Filter Carousel -  8 X 1.25\" Filter Wheel - FW8125CAR","description":"\u003cp\u003eThis is a replacement 8 position carousel for 1.25\" threaded filters. It is designed to fit the StarField FW8125V2 motorized filter wheel and is threaded for M28.5 x 0.6 filters.\u003cbr\u003e\u003cbr\u003eAn extra carousel for your filter wheel is a pleasure to have when doing false color imaging. It allows you to just change the carousel instead of removing the filters from the original carousel and replacing them with another filter set.\u003cbr\u003e\u003c\/p\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770491289713,"sku":"SFO-FW8125CAR","price":140.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/8X125_Carousel.jpg?v=1776459294"},{"product_id":"starfield-filter-carousel-8-x-31-mm-filter-wheel-fw831car","title":"StarField Filter Carousel -  8 X 31 mm Filter Wheel - FW831CAR","description":"\u003cp\u003eThis is a replacement 8 position carousel for 31 mm unmounted filters. It is designed to fit the StarField FW831 motorized filter wheel but can also be used to allow the FW5200V2, FW8125V2 or the FW736V1 to accept 31 mm unmounted filters.\u003cbr\u003e\u003cbr\u003eAn extra carousel for your filter wheel is a pleasure to have when doing false color imaging. It allows you to just change the carousel instead of removing the filters from the original carousel and replacing them with another filter set.\u003c\/p\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770492993649,"sku":"SFO-FW831CAR","price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/8X31_Carousel.jpg?v=1776458932"},{"product_id":"starfield-filter-carousel-7-x-36-mm-filter-wheel-fw736car","title":"StarField Filter Carousel -  7 X 36 mm Filter Wheel - FW736CAR","description":"\u003cp\u003eThis is a replacement 7 position carousel for 36 mm unmounted filters. It is designed to fit the StarField FW736 motorized filter wheel but can also be used to allow the FW5200V2, FW8125V2 or the FW831V1 to accept 36 mm unmounted filters.\u003cbr\u003e\u003cbr\u003eAn extra carousel for your filter wheel is a pleasure to have when doing false color imaging. It allows you to just change the carousel instead of removing the filters from the original carousel and replacing them with another filter set.\u003c\/p\u003e\n\u003cbr\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770493812849,"sku":"SFO-FW736CAR","price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/7X36_Carousel.jpg?v=1776459211"},{"product_id":"starfield-filter-carousel-5-x-2-filter-wheel-fw5200car","title":"StarField Filter Carousel -  5 X 2\" Filter Wheel - FW5200CAR","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThis is a replacement 5 position carousel for 2\" threaded filters.  It is designed to fit the  StarField FW5200V2 motorized filter wheel and is threaded for M48 x 0.75 filters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAn extra carousel for your filter wheel is a pleasure to have when doing false color imaging.  It allows you to just change the carousel instead of removing the filters from the original carousel and replacing them with another filter set.\u003cbr\u003e\u003c\/p\u003e\n\u003cbr\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770496335985,"sku":"SFO-FW5200CAR","price":120.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/5X2_Carousel.jpg?v=1776459081"},{"product_id":"starfield-2-dark-filter-df200","title":"StarField 2\" Dark Filter - DF200","description":"\u003cspan\u003eUse this completely opaque (dark) 2\" filter when generating a dark frame if your camera is not equipped with a built in mechanical shutter. \u003c\/span\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770501349489,"sku":"SFO-DF200","price":35.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/2in_Dark_Fil.jpg?v=1776459030"},{"product_id":"starfield-1-25-dark-filter-df125","title":"StarField 1.25\" Dark Filter - DF125","description":"\u003cspan\u003eUse this completely opaque (dark) filter when generating a dark frame if your camera is not equipped with a built in mechanical shutter. 1.25\" in threaded cell.\u003c\/span\u003e","brand":"StarField Optics","offers":[{"title":"Default Title","offer_id":39770501742705,"sku":"SFO-DF125","price":28.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/Dark_Filter_125.jpg?v=1776459250"},{"product_id":"zwo-efw-electronic-filter-wheel-8-x-1-25-or-31-mm-efw-8x125","title":"ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25\" or 31 mm Filters - EFW-8X125","description":"\u003cp\u003eThis model of the ZWO EFW Electronic Filter Wheel has a carousel with eight (8) filter positions and accepts either 1.25\" threaded filters or 31 mm unthreaded filters.  The 1.25\" filters thread into place, while the 31 mm filters require M2 screws and washers (included) to fix them in place.  Filters are sold separately, just make sure your 1.25\" filters have threads that are shorter than 3 mm in length, and all filters are less than 7 mm high.  By the way, it might help you to know that 1.25\" filters won't vignette on scopes with a focal ratio of f\/5, while 31 mm filters won't vignette on scopes with a focal ratio as fast as f\/2.  \u003c\/p\u003e\n\u003cp\u003eThe ZWO EFW Electronic Filter Wheel body is CNC machined from an aircraft grade aluminum block.  The thickness of the EFW is just 20 mm on the body itself, while the base is 33 mm.  The height of the filter wheel is 152.5 mm (6\").\u003c\/p\u003e\n\u003cp\u003eThe EFW stepper motor is made by NPM in Japan, making it a reliable component of this filter wheel.  The Electronic Filter Wheel can be rotated in either direction for quicker filter selection.  Just one USB cable powers the filter wheel, with power consumption at approximately 120mAh @ 5V.  If you have an ASI Cooled camera, you can plug the cable into its USB hub.\u003c\/p\u003e\n\u003cp\u003eWhat's in the Box?\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eEFW body with 8 position carousel for 1.25\" or 31 mm filters\u003c\/li\u003e\n\u003cli\u003e1.25″ cover\u003c\/li\u003e\n\u003cli\u003eT2 nosepiece\u003c\/li\u003e\n\u003cli\u003e1.25″ holder(with cover and 2 screws)\u003c\/li\u003e\n\u003cli\u003eT2-T2 adapter(male)\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"SV\"\u003eA bag of filter masks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eUSB2.0 2m cable\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"SV\"\u003ePhillips screwdriver\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan lang=\"SV\"\u003eA bag of M2 screws\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40193346142321,"sku":"ZWO-EFW-8X125","price":416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW8_Main.jpg?v=1776459140"},{"product_id":"zwo-ir-cut-filter-1-25-ircut1-25","title":"ZWO IR-Cut Filter - 1.25\" - IRCUT1.25","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003eThe ZWO 1.25″ IR UV CUT filter is suitable for color cameras with an AR window.\u003c\/p\u003e\n\u003cp\u003eThe ZWO IR-Cut Filter blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the ZWO IR Cut Filter will protect your H-alpha filter from the damaging effects of infrared radiation.\u003c\/p\u003e\n\u003cp\u003eUnlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that infrared light causes blurry images. By blocking infrared with a ZWO IR-CUT filter, you will help keep your images safe from the effects of this disruptive wavelength of light.\u003c\/p\u003e\n\u003cp\u003eThis ZWO IR-Cut filter is housed in a 1.25” cell. The filter comes with a protective plastic case.\u003c\/p\u003e\n\u003cp\u003eThickness: 1.85 mm\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40193352269937,"sku":"ZWO-IRCUT1.25","price":31.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/IR-CUT_125_Black_Background.jpg?v=1776459283"},{"product_id":"zwo-ir-cut-filter-2-ircut2","title":"ZWO IR-Cut Filter - 2\" - IRCUT2","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003eThe ZWO 2″ IR UV CUT filter is suitable for color cameras with an AR window.\u003c\/p\u003e\n\u003cp\u003eThe ZWO IR-Cut Filter blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the ZWO IR Cut Filter will protect your H-alpha filter from the damaging effects of infrared radiation.\u003c\/p\u003e\n\u003cp\u003eUnlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that infrared light causes blurry images. By blocking infrared with a ZWO IR-CUT filter, you will help keep your images safe from the effects of this disruptive wavelength of light.\u003c\/p\u003e\n\u003cp\u003eThis ZWO IR-Cut filter is housed in a 2” cell. The filter comes with a protective plastic case.\u003c\/p\u003e\n\u003cp\u003eThickness: 5 mm + 2 mm for the thread\u003c\/p\u003e\n\u003cp\u003eThread:  M48x0.75 Male\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40193353318513,"sku":"ZWO-IRCUT2","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/IR-CUT_2_Black_Background.jpg?v=1776459160"},{"product_id":"zwo-1-25-lrgb-imaging-filter-set-lrgb1-25new","title":"ZWO 1.25\" LRGB Imaging Filter Set for CMOS Cameras - LRGB1.25NEW","description":"\u003cp\u003eThis set of ZWO LRGB 1.25\" Filters is optimized for CMOS cameras, including the ASI1600.  The set includes a red, green, blue and luminance (aka IR-CUT) filter in a 1.25\" threaded format.\u003c\/p\u003e\n\u003cp\u003eCompared to the original LRGB set by ZWO, this one has better color balance, as well as better transmission and coatings.  They are designed to equalize the flux of a CMOS camera sensor.  Each filter is fine-optically polished to 1\/4 wave and then multiple layers of anti-reflection coating is applied.  Here are some additional highlights and specifications of the ZWO LRGB Imaging Filter Set:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e92% + transmission at passband\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eRGB color combine weights are approximately 1:1:1\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eInfrared wavelength 700-1100 nm cut-off\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003ePrecision off-band blocking\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eA small spectral gap minimizes the effects of light pollution\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eMore parfocal - 1.9 mm +\/- 0.03 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSize is 1.25\" with M28.5 X 0.6 threads\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eThickness is 5.5 mm + 2.5 mm for the threads\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003cem\u003ePlease note that while the transmission curves of OIII, Ha \u0026amp; SII are shown in the graph, this LRGB set does not take the place of actual OIII, Ha, \u0026amp; SII filters when doing narrowband imaging.  \u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40193357774961,"sku":"ZWO-LRGB1.25NEW","price":207.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/LRGB_New.png?v=1776459051"},{"product_id":"zwo-narrowband-7nm-oiii-sii-ha-filter-set-1-25","title":"ZWO Narrowband 7nm OIII,SII \u0026 Ha Filter Set - 1.25\" - NB7NM1.25","description":"\u003cp\u003eThis Narrowband Filter Set from ZWO, also known as a SHO Set, is used for tri-color astrophotography to give you beautiful \"Hubble\" type results.  The three-piece filter set includes a 7 nm OIII, SII \u0026amp; Ha 1.25\" threaded filter.  The glass thickness is 2.0+\/-0.03 mm, and the overall thickness of the filter is 5.5 mm plus 2.5 mm for the M28.5 x 0.6 male threads.  The ZWO 7 nm bandpass is designed for imaging nebulae.\u003c\/p\u003e\n\u003ch3\u003eH-Alpha (Ha) Filter\u003c\/h3\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe ZWO H-Alpha filter has a bandpass of 7nm.  This Ha filter passes light at 656nm wavelength at a transmission rate of 90%. A narrowband H-alpha filter yields high-contrast images of nebulae, even when you're imaging in light-polluted skies, especially those plagued by mercury vapor \u0026amp; sodium vapor lights as well as skyglow caused by neutral oxygen emissions in the atmosphere.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSulphur (SII) Filter\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eThe ZWO SII Filter has a bandpass of 7 nm and passes light at 672nm wavelength at a transmission rate of 90%.  The SII filter is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, or use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eOxygen III (OIII) Filter\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eThe ZWO OIII Filter is designed for nebula observation, allowing a 7nm bandwidth of light centered on the OIII 500nm line with about 90% transmission.  Adding the ZWO OIII Narrowband Filter to your collection will help you go beyond RGB imaging and will help capture your favorite nebulae in a totally new light, no matter how polluted your skies may be!\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Details of ZWO Narrowband Filters\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFWHM：7±0.5nm\u003c\/li\u003e\n\u003cli\u003eGlass Thickness 2.0+\/-0.03 mm  (1.25”\/31mm\/36mm)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront over the both surfaces\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at H-alpha line 656nm (H-Alpha filter )\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at SII line 672nm (SII filter )\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at major OIII line 500nm (OIII filter )\u003c\/li\u003e\n\u003cli\u003eInfrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli\u003e\u0026lt;0.1% transmission of off-band, OD3(Optical Density)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40193372749937,"sku":"ZWO-NB7NM1.25","price":517.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/NB7_125_SET.jpg?v=1776459202"},{"product_id":"optolong-3nm-l-ultimate-filter-2","title":"Optolong 3nm L-Ultimate Filter - 2\"","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Ultimate 3nm dual band filter is designed to drastically reduce the effects of light pollution.  The 3nm isolates the nebulae's emissions into H-Alpha (red) and OIII (green-blue). It blocks light pollution, maximizes the signal from nebulae, and darkens the sky background. It also blocks artificial light from mercury vapor lamps, high and low pressure sodium vapor lights, and unwanted natural light caused by the emission of neutral oxygen in our atmosphere. Maximizes the transmission of the main emission lines of the nebula in OIII (496nm and 500nm) and H-alpha (656nm). Used with DSLR, color\/MONO CMOS and CCD, however, \u003cem\u003ethis filter is not suitable for fast ratio systems.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe advantage of the 2\" L-Ultimate Filter is that it only passes through OIII(500.7nm) and Ha(656.3nm) emission lines, and all other light pollution emission lines are eliminated so that only the emission and reflection signals of the nebula are captured during imaging. Therefore, the sky background of the image is darker, and the contrast between the nebulae and the signal-to-noise ratio are improved to the greatest extent. In heavily light pollution areas, the L-Ultimate filter can also selectively filter light pollution and clutter signals through the emission lines of nebulae, and finally avoid the impact of light pollution on astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSubstrate:  Optical Glass\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eFWHM:  OIII 3nm, Ha 3 nm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eBlocking Range:  300 nm - 1000 nm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eBlocking:  \u0026gt;OD4\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSurface Quality:  60.40\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eTransmitted Wavefront RMS:  4\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eParallelism:  30 s\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40193395294321,"sku":"OPTO-L-ULTIMATE-2","price":564.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Ultimate_2_laying.jpg?v=1776459302"},{"product_id":"optolong-l-pro-filter-2","title":"Optolong  L-Pro Filter - 2\"","description":"\u003cp\u003e\u003cspan\u003eOptolong L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSuitable for both visual observations and astrophotography.  This L-Pro Filter is housed in a 2\" threaded cell that can be attached to a 2\" eyepiece or accessory as well as a CFW that accepts 2\" filters.  Since this filter suppresses the infrared wavelength, it can be used for \"L\", or Luminance imaging.\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN WITH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40193395622001,"sku":"OPTO-L-PRO-2","price":290.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Pro_2.jpg?v=1776459012"},{"product_id":"optolong-l-enhance-filter-2","title":"Optolong  L-eNhance Filter - 2\"","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong 2\" L-eNhance is a dual-band pass filter that effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines to achieve a maximum transmission of up to 90%. The performance of this filter delivers results that control the impact from light polluted skies in a major way.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eSubstrate:  B270\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eThickness:  1.85 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTpeak:  T\u0026gt;90%\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Range:  300 nm - 1000 nm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Depth:  Light pollution line blocking \u0026gt;99%\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eParallelism: 30s\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMulti-layers of anti-reflection coating\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40193396834417,"sku":"OPTO-L-ENHANCE-2","price":333.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-eNhance_2_Standing.jpg?v=1776459300"},{"product_id":"optolong-l-extreme-dual-band-filter-2","title":"Optolong  L-eXtreme Dual 7nm Ha\/OIII Narrowband Filter - 2\"","description":"\u003cp\u003eThe L-eXtreme filter from Optolong is 7nm dual band in that passes Ha and OIII emission lines.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe advantage of the L-eXtreme filter over the L-eNhance, which is a tri-band filter,  is that there are no transmission between the H-beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximizes a nebula's signal and makes the sky background darker while imaging. The L-eXtreme filter should better isolate the emission lines only and provide better protection from light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eSubstrate: B270\u003cbr\u003eThickness: 1.85mm\u003cbr\u003eTpeak:  T\u0026gt;90%\u003cbr\u003eBlocking Range: 300-1000nm\u003cbr\u003eBlocking Depth: Light pollution line blocking \u0026gt;99%\u003cbr\u003eSurface Quality: 60\/40\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003eParallelism: 30s\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40193397489777,"sku":"OPTO-L-EXTREME-2","price":449.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-eXtreme_2_Standing.jpg?v=1776459297"},{"product_id":"optolong-l-pro-clip-filter-for-canon-eos-aps-c","title":"Optolong L-Pro Clip Filter for Canon EOS APS-C","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Pro EOS APS-C Clip is a multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong EOS-C DSLR Clip In Filter is compatible with the following cameras:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon Digital Rebel XS\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon Digital Rebel XSi\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 1000D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 500D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Kiss F\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Kiss X2\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Kiss X3\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Rebel T1i\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 60D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 60Da\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 7D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 70D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 50D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 650D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 600D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 550D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 700D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 1100D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 1200D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 40D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 30D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 20D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 10D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS D60 \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS D30\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes with your compatible Canon EOS camera in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN WITH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"How to Install Optolong Clip Filter in Canon EOS APS-C Cameras\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Optolong_Install_Clip-in_EOS-C.png?v=1684621253\" width=\"526\" height=\"671\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40193398341745,"sku":"OPTO-L-PRO-EOS-APS","price":392.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-PRO_EOS_CLIP_APS_Facing.jpg?v=1776459055"},{"product_id":"optolong-l-enhance-clip-filter-for-canon-eos-aps-c","title":"Optolong  L-eNhance Clip Filter for Canon EOS APS-C","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-eNhance EOS APS-C Clip is a dual-band pass filter designed to work with Canon EOS APS-C cameras. Optolong L-eNhance filters effectively isolate the H-Alpha, H-Beta, and Oxygen III nebula emission lines to achieve a maximum transmission of up to 90%. The performance of this filter delivers results that control the impact from light polluted skies in a major way.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eSubstrate:  B270\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eThickness:  1.85 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTpeak:  T\u0026gt;90%\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Range:  300 nm - 1000 nm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Depth:  Light pollution line blocking \u0026gt;99%\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eParallelism: 30s\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMulti-layers of anti-reflection coating\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOptolong EOS-C DSLR Clip In Filter Camera Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon Digital Rebel XS\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon Digital Rebel XSi\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 1000D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 500D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Kiss F\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Kiss X2\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Kiss X3\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS Rebel T1i\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 60D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 60Da\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 7D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 70D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 50D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 650D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 600D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 550D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 700D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 1100D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 1200D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 40D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 30D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 20D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 10D\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS D60 \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS D30\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"How to Install Optolong Clip Filter in Canon EOS APS-C Cameras\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Optolong_Install_Clip-in_EOS-C.png?v=1684621253\" width=\"526\" height=\"671\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Optolong_Install_Clip-in_EOS-C.png?v=1684621253\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40193399390321,"sku":"OPTO-L-ENHANCE-EOS-APS","price":377.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-eNhance_EOS_APS_Clip.jpg?v=1776459256"},{"product_id":"optolong-l-pro-filter-1-25","title":"Optolong  L-Pro Filter - 1.25\"","description":"\u003cp\u003e\u003cspan\u003eSuitable for both visual observations and astrophotography.  This L-Pro Filter is housed in a 1.25\" threaded cell that can be attached to a 1.25\" eyepiece or accessory as well as a CFW that accepts 1.25\" filters.  Since this filter suppresses the infrared wavelength, it can be used for \"L\", or Luminance imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN WITH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40214219292785,"sku":"OPTO-L-PRO-125","price":218.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L_Pro_125_Standing.jpg?v=1776459184"},{"product_id":"optolong-l-pro-clip-filter-for-canon-5d-5d-mark-ii-iii-6d-ff-cameras","title":"Optolong L-Pro Clip Filter for Canon 5D\/5D Mark II\/III \u0026 6D FF Cameras","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Pro EOS FF Clip is a multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong EOS-FF DSLR Clip In Filter is compatible with the following cameras \u0026amp; lenses:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 5D\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 5D Mark II\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 5D Mark III\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCanon EOS 6D\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAll EF Lenses\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes with your compatible Canon EOS camera in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN WITH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"Optolong Canon EOS FF Clip Filter Compatibility and Installation\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ClipEOSFFCompatibility.jpg?v=1688062917\" width=\"528\" height=\"396\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40214230270065,"sku":"OPTO-L-PRO-EOS-FF","price":392.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Pro_Canon_FF_Clip_1.jpg?v=1776459233"},{"product_id":"optolong-l-pro-clip-filter-for-nikon-full-frame-cameras","title":"Optolong L-Pro Clip Filter for Nikon Full Frame Cameras","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Pro Clip Filter for Nikon full frame cameras is a multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong Nikon FF DSLR Clip In Filter is compatible with the following cameras \u0026amp; lenses:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eD600\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD610\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD700\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD750\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD800\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD800E\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD810\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eD810A\/DF\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes with your compatible Nikon Full Frame camera in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN WITH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Clip_Filter_Installation_Nikon_FF_480x480.png?v=1688065000\" width=\"543\" height=\"688\"\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40214232367217,"sku":"OPTO-L-PRO-NIK-FF","price":392.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Pro_Clip_Nikon_FF_Left.jpg?v=1776458926"},{"product_id":"skymentor-1-25-uv-ir-filter-for-imaging","title":"Sky Mentor 1.25\" UV\/IR Filter for Imaging","description":"\u003cspan class=\"tgt\" data-section=\"0\" data-sentence=\"0\" data-group=\"0-0\" data-mce-fragment=\"1\"\u003eThe main function of the UV IR-cut filter is to correct the color balance of the image.\u003cspan data-mce-fragment=\"1\"\u003e Since\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"tgt\" data-section=\"0\" data-sentence=\"1\" data-group=\"0-1\" data-mce-fragment=\"1\"\u003e color cameras are extremely sensitive in both infrared and ultraviolet light, you need to use this 1.25-inch UV IR-cut filter to cut off both infrared and ultraviolet light if you want to get pictures of the planets and the moon in true color and sharpness.\u003c\/span\u003e","brand":"Sky Mentor","offers":[{"title":"Default Title","offer_id":40242874417265,"sku":"SM82301","price":20.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/61KRCqYW7EL.__AC_SX300_SY300_QL70_FMwebp.webp?v=1776459027"},{"product_id":"skymentor-2-uv-ir-filter-for-imaging","title":"Sky Mentor 2\" UV\/IR Filter - TA404-2","description":"\u003cspan class=\"tgt\" data-section=\"0\" data-sentence=\"0\" data-group=\"0-0\" data-mce-fragment=\"1\"\u003eThe main function of the UV IR-cut filter is to correct the color balance of the image.\u003cspan data-mce-fragment=\"1\"\u003e Since\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"tgt\" data-section=\"0\" data-sentence=\"1\" data-group=\"0-1\" data-mce-fragment=\"1\"\u003e color cameras are extremely sensitive in both infrared and ultraviolet light, you need to use this 2-inch UV IR-cut filter to cut off both infrared and ultraviolet light if you want to get pictures of the planets and the moon in true color and sharpness.\u003c\/span\u003e","brand":"Sky Mentor","offers":[{"title":"Default Title","offer_id":40242876907633,"sku":"SMT-TA404-2","price":39.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/capture_2_151.png?v=1776459031"},{"product_id":"optolong-l-extreme-f2-dual-band-filter-for-fast-optics-2","title":"Optolong  L-eXtreme F2 7nm Dual Band Filter for Fast Optics - 2\"","description":"\u003cp\u003eThe Optolong L-eXtreme F2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at continuously varying angles. Astronomically characterized spectral lines (OIII, Ha) are the main transmission wavelengths, and the OIII and H-Alpha nebula emission lines pass accurately at f2 - f3.3.  This 2\" L-eXtreme filter performs well with RASA, HyperStar F2 and other telescopes with fast optics of f\/2 to f\/3.3.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eKey Features:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eTogether with one-shot color astronomical cameras, monochrome astronomical cameras, and Digital SLR cameras, you can quickly obtain clear and detailed images of the deep sky;\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eIdeal for fast optical systems, like the Celestron RASA, Hyperstar, and other fast focal ratio telescope users;\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAnti-light pollution, better contrast, more details in celestial objects: This filter cuts out background light and noise beyond the target objects to get better details and contrast in your images. L-eXtreme F2 can effectively block light pollution so that the images will not be affected by unwanted lighting or sky glow if the background. You can quickly get satisfactory pictures with fast optical systems.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable cellspacing=\"1\" cellpadding=\"1\" border=\"1\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSubstrate\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eoptical glass\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.85mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFWHM\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eOIII 7nm \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHa 7nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBlocking range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e300-1000nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBlocking Depth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026gt;OD4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSurface quality\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e60\/40\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTransmitted Wavefront RMS\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eλ\/4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e Parallelism\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30s\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40248867455089,"sku":"OPTO-L-EXTREME-F2","price":464.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Extreme_F2_2inch.jpg?v=1776459200"},{"product_id":"optolong-l-quad-enhance-filter-2","title":"Optolong 2\" L-Quad Enhance Broadband Filter - LQUAD2","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Quad Enhance Broadband Filter is designed for light pollution suppression with color cameras.  The L-QEF is a quad bandpass filter lowers the light generated by mercury and sodium lamps as well as natural skylight.  When used with a color CMOS camera, contrast is enhanced and objects are more distinct.  The filter provides better color balance while improving resistance to light pollution.  This 2\" L-Quad filter can be used for wide field astrophotography and deep-sky objects like nebulae, galaxies, star clusters and more.  It maximizes the color balance of nebulae, galaxies and other broadband spectral targets.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eMajor Emission Lines of Nebulae:\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eH-a - 656.3nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eH-b -486.1nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOIII - 495.9nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOIII - 500.7nm\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eMajor Emission Lines of Artificial Light Pollution\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eHg - 435.8nm, 546.1nm, 577nm, 578.1nm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNa - 598nm, 589.6nm, 615.4nm, 616.1nm\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003e\u003cspan\u003eFeatures of the L-Quad Enhance 2\" Filter\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCuts out light pollution from mercury and sodium lamps and produces a nice broadband image with minimal color cast;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSignal-to-noise ratio (SNR);\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eNear IR cut-off to 1000nm, reducing the effects of IR noise;\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eL-QEF has more than 90% transmittance of the nebula emission lines at H-Beta\/OIII\/H-Alpha\/SII, with cut-off depth from OD2 to OD4, thus providing a significant increase in resistance to light pollution. L-QEF is good for night sky from Bortel 1 to Bortel 7 levels; (Bortel 8, Bortel 9 environments are not  recommended);\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003eSuitable for wide range of deep sky targets: it covers most nebulae, galaxies, star clusters, reflected and emitted line signals astronomical objects with higher contrast and rich details while maintaining excellent color balance. \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: center;\"\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eSubstrate:  Optical glass\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eThickness:  1.85 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Range:  300 nm - 1000 nm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Depth:  OD2 - OD4\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eParallelism: 30s\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMulti-layers of anti-reflection coating\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFWHM:  Quad bandpass filter\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40272219373681,"sku":"OPTO-LQUAD2","price":290.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Quad_2inch_Filter.jpg?v=1776459036"},{"product_id":"idas-light-pollution-suppression-lps-filters-48mm-p2-made-in-japan-pre-owned","title":"IDAS Light Pollution Suppression (LPS) Filters 48mm - P2 - Made in Japan! (Pre-Owned)","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cem\u003eUsed, still in great condition.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\" data-mce-style=\"text-align: center;\" data-mce-fragment=\"1\"\u003eIDAS Light Pollution Suppression (LPS) Filters 48mm - P2 (Pre-Owned)\u003c\/h3\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLight pollution suppression (LPS) filters are designed to suppress the common emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects, particularly emission nebulae.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eUnlike other light pollution suppression filters, IDAS filters are specifically designed for balanced color transmission using the IDAS unique \u003cb data-mce-fragment=\"1\"\u003eMulti-Bandpass Technology\u003c\/b\u003e (MBT) process. The balanced transmission allows color photographs to be taken with minimal color cast to broadband emission objects such as stars, galaxies and globular clusters. The comparison photos at right demonstrate (qualitatively) that the IDAS filter maintains better color balance than other filters which have been designed for visual use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLPS filters utilize the unique IDAS Ion Gun Assisted Deposition (IGAD*) coating technology for superior coating durability (quartz hardness) and safer cleaning. IGAD coatings also improve temperature and humidity stability of the filter performance, reducing spectrum shifts down to +\/-1nm from the +\/-3 or 4nm shift of standard coatings.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCCD imaging can also benefit, because although CCD imagers can already shoot through light pollution to some extent, including an LPS filter to the setup gives an added (signal-to-noise) edge.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNote, however, that light pollution suppression filters are \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003enot\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e a perfect substitute for dark skies. Refer to Hutech's discussion of the \u003c\/span\u003e\u003ca href=\"http:\/\/www.sciencecenter.net\/hutech\/idas\/lps2.htm\" aria-describedby=\"a11y-external-message\" data-mce-fragment=\"1\" data-mce-href=\"http:\/\/www.sciencecenter.net\/hutech\/idas\/lps2.htm\"\u003elimitations and common misconceptions\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e about light pollution suppression filters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLPS filters are available for 1-1\/4\" and 2\" (48mm) eyepieces, as well as in numerous sizes to accomodate most popular camera lenses. Each filter lot is tested and a plot of the spectral response of the lot is provided with each filter. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/tokai1_large.gif?10873360616383643319\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/tokai1_large.gif?10873360616383643319\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e[Above] Spectral response (% transmission vs. wavelength in nanometers) of the IDAS Light Pollution Suppression filter. Major emission lines generated by artificial lighting are also indicated. Note that this plot represents the spec target for LPS filters. The spectral response of each individual filter will vary. This is measured, plotted, and shipped with each filter produced:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/idas-p2_1024x1024.gif?7115251255644343845\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/idas-p2_1024x1024.gif?7115251255644343845\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAbove is a sample of the filter lot data plot which is shipped with each filter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe IDAS production criteria for filters are as follows, arranged from left to right (short to long wavelength) as plotted above:\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"scrollable-wrapper\" data-mce-fragment=\"1\"\u003e\n\u003ctable data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eWavelength (nm)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePass\/Block\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTransmission\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e365\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eBlock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e6.5% max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e405\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eBlock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e6.5% max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003ePass\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e60% min (avg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e436\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eBlock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e6.5% max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003ePass\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e92% min (avg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e546\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eBlock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e6.5% max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003ePass\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e75% min (avg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e590\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eBlock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e6.5% max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003ePass\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e75% min (avg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e623\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003eBlock\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e25% max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003ePass\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan size=\"2\" face=\"Arial, Geneva\" data-mce-fragment=\"1\"\u003e80% min (avg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/tokai2_large.gif?10873360616383643319\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/tokai2_large.gif?10873360616383643319\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e[Above] Off-axis spectral response (% transmission vs. wavelength in nanometers) of the IDAS filter.\u003c\/span\u003e\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":40378854178929,"sku":"USED110802","price":169.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/YvIG1lruxpiJuL4TngcoNYyOmxSoHj5kKnSK-2000x1400.jpg?v=1776459323"},{"product_id":"arcturus-2-filter-slide-pre-owned","title":"Arcturus 2\" Filter Slider (pre-owned)","description":"\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eConvenient filter slider makes it easy to use multiple 2\" filters\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHolds filters in same orientation as an eyepiece for maximum transmission\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eQuickly compare the enhancing effects of up to 4 different 2\" filters\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eRequires approximately 24mm of inward focus travel - not recommended for use with Newtonian reflectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eUse this handy 2\" filter slider to quickly switch between up to four 2\" eyepiece filters to enhance and improve your views. With this slider, you'll be able to use multiple filters without the hassle of repeatedly removing and replacing an eyepiece to switch individual filters. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eUsing a variety of different eyepiece filters is an effective way to enhance visual observations of the planets and Moon, and more distant deep-sky targets including nebulas, galaxies and star clusters. Usually, a single filter is attached to an eyepiece, then the combination of eyepiece and filter is inserted into a telescope focuser to achieve a filtered view. To change the filter, you would normally have to remove the eyepiece from the telescope, unthread and exchange the filter, then re-insert the eyepiece and adjust focus. This process can be a hassle, especially if you wish to use more than one 2\" filter during a single stargazing session to compare filtration effects. The Arcturus 4-Slot 2\" Filter Slider takes the hassle out of the process by allowing you to switch between up to four 2\" filters quickly and easily.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFilters are not included.\u003c\/p\u003e","brand":"Sky Mentor","offers":[{"title":"Default Title","offer_id":40451028746353,"sku":"USED122207","price":109.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/arcturus-arcturus-2-inch-filter-slide.jpg?v=1776459306"},{"product_id":"zwo-next-gen-7-position-2-50mm-electronic-filter-wheel-zwo-efw-7x2-25","title":"ZWO 7x2 EFW Electronic Filter Wheel - Next Gen - 7 Position for 2\" or 50.4 mm Filters - EFW-7X2-25","description":"\u003ch4 style=\"text-align: center;\"\u003eZWO 7x2 EFW Electronic Filter Wheel with Anti-Light-Leak Technology\u003cbr\u003e7 Position, Uses 2\" Threaded or 50.4 mm Unthreaded Filters\u003c\/h4\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_Banner.webp?v=1765309917\"\u003e\u003c\/p\u003e\n\u003ch3\u003eThe Next-Generation ZWO EFW\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRefined Design · Anti-Light-Leak Protection · Built for Astrophotography\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e* A re-engineered internal design helps reduce light leakage, while the refined mechanics deliver smoother, more consistent rotation.\u003c\/p\u003e\n\u003cp\u003e*The exterior has been subtly streamlined, giving the wheel a cleaner and more cohesive look.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e*Nothing dramatic. Just better in the ways that matter — so your imaging workflow stays steady, reliable, and quietly improved.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_Highlights.jpg?v=1765310246\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4\u003eEFW 7x2 Filter Compatibility\u003c\/h4\u003e\n\u003cp\u003eThe ZWO 7x2 Electronic Filter Wheel supports 2\" mounted filters with a thickness of ≤7mm, or 50mm unmounted filters with a thickness of between 1.5 mm \u0026amp; 3.5 mm. There are 7 slots available. The weight of the 7x2 EFW is 720 g and has a effective thickness of 20 mm.\u003c\/p\u003e\n\u003ch4\u003eZWO Filter Compatibility\u003c\/h4\u003e\n\u003cp\u003eEngineered for full compatibility with all ZWO filters for dependable image quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower \u0026amp; Connectivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDraws only 120 mA at 5V and runs entirely from a single USB  connection—no external power supply needed.  The ZWO EFW filter wheel connects to your imaging system via the built-in USB-C port using the included USB 2.0 Type-A to Type-C cable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoftware Support\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWorks seamlessly with ASIAIR, ASIStudio, ASCOM, and the ZWO SDK for flexible control across platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDriver-Free Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTrue plug-and-play design with no driver installation required.\u003c\/p\u003e\n\u003ch4\u003eAnti-Light-Leak Design\u003c\/h4\u003e\n\u003cp\u003eIn deep-sky imaging, even small amounts of stray light can compromise your final image. The Next Generation ZWO EFW introduces a series of structural refinements to eliminate light leakage from all directions.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e★ \u003cem\u003eUpgraded Sealing Structure \u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eA re-engineered slot-fit chassis provides a tighter mechanical interface between the top and bottom covers, minimizing potential ingress points for stray light.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e★ \u003cem\u003eDual Light-Blocking Protection\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eNewly added light-blocking pads on both lateral connection points creates additional optical barrier,  helping maintain clean, uniform frames during long integrations.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e★ \u003cem\u003eFully Enclosed Motor Compartment\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe motor assembly is now fully sealed, improving both light isolation and environmental resistance for more stable operation over time.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_Anti_Light_Leak_Design.webp?v=1765311005\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW-Upgraded_Sealing_Structure.webp?v=1765311044\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch4 style=\"text-align: left;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_Refined_Exterior.webp?v=1765311005\" alt=\"\"\u003eInterface Upgrade\u003c\/h4\u003e\n\u003cp\u003eThe new ZWO EFW replaces the legacy USB Type-B connector with a modern USB-C interface, providing a more robust, reliable connection and simplifying plug-and-play integration with your imaging system.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_Setup_Showing_TypeC_USB.webp?v=1765311222\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eLightweight \u0026amp; Rigid\u003c\/h3\u003e\n\u003cp\u003eThe new ZWO EFW uses a CNC-machined aluminum alloy body for a lighter, more rigid structure. The internal filter carousel is made from 6061 aluminum alloy, reducing weight while maintaining excellent strength and stability. The result is a compact, durable design engineered for smooth, reliable operation.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_Interior_Shot.webp?v=1765311291\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStable \u0026amp; Durable\u003c\/h3\u003e\n\u003cp\u003eThe new ZWO EFW is equipped with a high-precision stepper motor, ensuring consistent rotation and stable operation across extended imaging sessions.\u003c\/p\u003e\n\u003ch3\u003eAutomated Filter Switching\u003c\/h3\u003e\n\u003cp\u003eThe new ZWO EFW features a motorized, bidirectional filter-wheel drive with precise position indexing. When paired with control software such as ASIAIR (sold separately), it enables automatic filter changes during a scheduled imaging session — enabling fully unattended, hands-free astrophotography.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_5x2_7x2_WITB.webp?v=1765311399\" alt=\"\"\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40462146928753,"sku":"ZWO-EFW-7X2-25","price":559.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/EFW_7x2_Filter_Port.webp?v=1776459315"},{"product_id":"optolong-l-pro-clip-filter-for-sony-full-frame-cameras","title":"Optolong L-Pro Clip Filter for Sony Full Frame Cameras","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Pro Clip Filter for Sony full frame cameras is a multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong Sony FF DSLR Clip In Filter is compatible with the following cameras \u0026amp; lenses:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA7M\u003c\/li\u003e\n\u003cli\u003eA7M2\u003c\/li\u003e\n\u003cli\u003eA7M3\u003c\/li\u003e\n\u003cli\u003eA7R\u003c\/li\u003e\n\u003cli\u003eA7R2\u003c\/li\u003e\n\u003cli\u003eA7R3\u003c\/li\u003e\n\u003cli\u003eA7S\u003c\/li\u003e\n\u003cli\u003eA7S2\u003c\/li\u003e\n\u003cli\u003eA9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes with your compatible Sony Full Frame camera in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN WITH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm \u0026amp; 500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20230720\/33c8423ec8ad9afe1da8288b5e3df5ce.png\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLay the camera body flat. The top of the filter will have the manufacturer name \"OPTOLONG\" etched on it. Insert this side into the body first (as shown in Figure 1) until it reaches the top and then gently push down to secure it in place. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003e\u003cstrong\u003eRemoving the Filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20230720\/d704857628aa3195f91058ca6bd8e7d0.png\" alt=\"\"\u003e\u003c\/span\u003e\u003cspan\u003eLay the camera body flat and use the included triangle aid to tilt the filter gently (as shown in Figure 1), and remove the filter once it is loosened. Be sure to avoid scratching the lens and\/or the camera!\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40462268530801,"sku":"OPTO-L-PRO-SONY-FF","price":392.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Pro_Sony_Clip.jpg?v=1776459258"},{"product_id":"optolong-l-pro-filter-77-mm","title":"Optolong  L-Pro Filter - 77 mm","description":"\u003cp\u003e\u003cspan\u003eOptolong L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast on broadband emission objects such as galaxies, reflection nebulae and globular star clusters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro (L-Professional) Filter is designed to improve the visibility of various deep-sky objects by selectively reducing the transmission of light pollution wavelengths, specifically those produced by artificial means such as mercury vapor lamps, and both high \u0026amp; low pressure sodium vapor lights.  The Optolong L-Pro also reduces unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp\u003eTogether with the highly transparent main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha (656nm) as well as SII (672nm), the filter is suitable for enhancing the contrast and details for both visual and photographic purposes in sub-rural areas with heavy light pollution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSuitable for both visual observations and astrophotography.  This L-Pro Filter is housed in a 77mm cell that can be threaded onto a camera lens that accepts 77mm filters.  Alternatively, you can use a the proper step ring adapter to attach the 77mm L-Pro filter to your lens. \u003c\/p\u003e\n\u003cp\u003eThe Optolong L-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations. \u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eWARNING\u003c\/u\u003e: DO NOT LOOK AT THE SUN THROUGH AN OPTOLONG FILTER. You could be BLINDED if you fail to observe the warning.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOptical glass fine material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpectrum: 380-750nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm \u0026amp; 500nm, SII 672nm and H-beta 486nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40462301462641,"sku":"OPTO-L-PRO-77","price":437.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Pro_77mm.jpg?v=1776459123"},{"product_id":"optolong-l-enhance-filter-1-25","title":"Optolong  L-eNhance Filter - 1.25\"","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp\u003e\u003cbr\u003eThe relentless spread or urbanization and its associated light pollution have become a growing problem for all amateur astro photographers. The current solutions to the problem can be expensive and might include the purchase of a monochrome camera, several types of narrowband filters and a filter wheel.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe Optolong L-eNhance 1.25\" Filter provides an economical and practical solution for amateurs. It is a dual-band pass filter which has been designed for color CMOS and monochrome CCD cameras. The convenience and cost effectiveness of this filter allows amateurs to image a rich selection of astronomical images, even in bright, heavily light-polluted areas. Optolong believes the design of our L-eNhance filter is a technical innovation among filters. It effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of up to 90%. The performance of this filter delivers images that superbly control the impact from light polluted skies.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eHydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists consider that Hydrogen amounts to more than 90% of visible substance in space. Our sun is 5 billion years old, but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much scientific significance, so keeping H and O is meaning for exploration of life. Therefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur.\u003c\/p\u003e\n\u003ch3\u003e \u003cstrong\u003eTechnical Data\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eSubstrate:  B270\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eThickness:  1.85 mm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTpeak:  T\u0026gt;90%\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Range:  300 nm - 1000 nm\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBlocking Depth:  Light pollution line blocking \u0026gt;99%\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eParallelism: 30s\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMulti-layers of anti-reflection coating\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40462399766641,"sku":"OPTO-L-ENHANCE-125","price":260.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-eNhance_125.jpg?v=1776459247"},{"product_id":"optolong-l-extreme-dual-band-filter-1-25","title":"Optolong  L-eXtreme Dual Band Filter - 1.25\"","description":"\u003cp\u003eThe L-eXtreme from Optolong is a dual band filter that passes Ha and OIII emission lines.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe advantage of the L-eXtreme filter over the L-eNhance, which is a tri-band filter,  is that there are no transmission between the H-beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximizes a nebula's signal and makes the sky background darker while imaging. The L-eXtreme filter should better isolate the emission lines only and provide better protection from light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eSubstrate: B270\u003cbr\u003eThickness: 1.85mm\u003cbr\u003eTpeak:  T\u0026gt;90%\u003cbr\u003eBlocking Range: 300-1000nm\u003cbr\u003eBlocking Depth: Light pollution line blocking \u0026gt;99%\u003cbr\u003eSurface Quality: 60\/40\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003eParallelism: 30s\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40462405599345,"sku":"OPTO-L-EXTREME-125","price":347.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-extreme_125.jpg?v=1776459217"},{"product_id":"optolong-h-alpha-7nm-imaging-filter-1-25","title":"Optolong H-Alpha 7nm Imaging Filter - 1.25\" - HA-7-125","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Optolong H-Alpha 7nm Narrowband Imaging Filter is the popular filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow). Better choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eMain use and performance:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSuitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNarrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eH-alpha filter is the first narrowband addition to LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNarrowband filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40462431256689,"sku":"OPTO-HA-7-125","price":232.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/HA-125.jpg?v=1776459213"},{"product_id":"celestron-origin-nebula-filter-93669","title":"Celestron Origin Nebula Filter - 93669","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003ch3 style=\"text-align: center;\" data-mce-fragment=\"1\"\u003eNebula Filter \u0026amp; Holder for Origin Telescopes!\u003c\/h3\u003e\n\u003cp\u003eTake advantage of the innovative filter holder built into the design of the Celestron Origin Nebula Filter and experience better contrast when viewing emission nebula like the Orion Nebula, the Lagoon Nebula and dozens more, especially in areas with light pollution!  This specialized filter blocks 0.5% of wavelengths that cause light pollution while allowing H-Alpha (656nm), H-Beta (486nm) and Oxygen III (496nm\/501nm) emission nebulae wavelengths through.  The result is a background sky that is darker without dimming the emission nebulae you are observing.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eHow does the Nebula Filter for Origin work? Emission nebulae primarily emit at discrete wavelengths of light—Hα at 656nm, Hβ at 486nm, and OIII at 496\/501nm. By strategically transmitting only these wavelengths of light and blocking the rest of the spectrum, the filter dramatically reduces the effect of light pollution. The “bad” light is blocked while the “good” light associated with emission nebulae passes through to Origin’s sensor.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eYou’ll immediately notice much higher contrast in your images, especially from your light-polluted backyard! And since the transmission at the critical wavelengths is so high, the nebula will not be dimmed—only the background will be blacker. You’ll also notice some contrast improvement in images of nebulae from darker skies, as the filter serves well in blocking natural skyglow.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Origin Nebula Filter is perfect for imaging emission nebulae like the North America Nebula (NGC 7000), Lagoon Nebula (M8), Orion Nebula (M42), the Carina Nebula (NGC 3372), and dozens more. The imaging filter offers maximum light transmission in the key Hα-Hβ-OIII wavelengths, producing high contrast for emission nebulae like these.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe transmission spectrum for the Celestron Origin Nebula Filter is 85% or greater at key wavelengths (486nm, 496nm\/501nm, 656nm) and less than 0.5% transmission elsewhere. As a narrowband filter, it blocks much of the visible spectrum and only lets these specific wavelengths through. Because of this, \u003cem\u003eyou should not use this filter while observing or imaging broadband emission objects, such as galaxies and star clusters. For those objects, you’ll achieve the best results by removing the nebula filter and reinstalling Origin’s clear optical window.\u003c\/em\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40472066359409,"sku":"CEL-93669","price":300.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/93669.jpg?v=1776458945"},{"product_id":"skymentor-dark-frame-filter-1-25","title":"SkyMentor Dark Frame Filter - 1.25\"","description":"\u003ch2 class=\"a-size-base-plus a-text-bold\" style=\"text-align: center;\" data-mce-fragment=\"1\"\u003eSkyMentor Dark Frame Filter - 1.25\"\u003c\/h2\u003e\n\u003ch1 class=\"a-size-base-plus a-text-bold\" data-mce-fragment=\"1\"\u003e\u003c\/h1\u003e\n\u003ch2 class=\"a-size-base-plus a-text-bold\" data-mce-fragment=\"1\"\u003eAbout this item\u003c\/h2\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\" data-mce-fragment=\"1\"\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003eSturdy standard 1.25-inch filter; dark frame imaging filter measures 1.25 inches and is suitable for standard 1.25-inch equipment; the filter frame is made of metal for durability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003eQuickly capture dark frames to optimize photo quality; opaque filters block all light from the imaging camera sensor; help remove dark currents; especially in astrophotography; guarantee high-precision pictures\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003eEasily eliminate camera noise and hot pixels; Dark frame acquisition helps remedy such noise and \"hot pixels\" by canceling out these disruptive effects during image processing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003e1.25-inch dark frame imaging filter is threaded and can be directly connected to your filter wheel; allowing you to achieve fast conversion between different filters; very convenient\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky Mentor","offers":[{"title":"Default Title","offer_id":40474926678129,"sku":"SM-Dark125","price":14.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Dark_Filter_125.jpg?v=1776458929"},{"product_id":"copy-of-skymentor-dark-frame-filter-1-25","title":"Sky Mentor Dark Frame Filter - 2\"","description":"\u003ch2 class=\"a-size-base-plus a-text-bold\" style=\"text-align: center;\" data-mce-fragment=\"1\"\u003eSky Mentor Dark Frame Filter - 2\"\u003c\/h2\u003e\n\u003ch1 class=\"a-size-base-plus a-text-bold\" data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/h1\u003e\n\u003ch2 class=\"a-size-base-plus a-text-bold\" data-mce-fragment=\"1\"\u003eAbout this item\u003c\/h2\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\" data-mce-fragment=\"1\"\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003eSturdy 2-inch filter; dark frame imaging filter measures 2 inches and is suitable for  2-inch equipment.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003eQuickly capture dark frames to optimize photo quality; opaque filters block all light from the imaging camera sensor; help remove dark currents; especially in astrophotography; guarantee high-precision pictures\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003eEasily eliminate camera noise and hot pixels; Dark frame acquisition helps remedy such noise and \"hot pixels\" by canceling out these disruptive effects during image processing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"a-list-item\" data-mce-fragment=\"1\"\u003e2-inch dark frame imaging filter is threaded and can be directly connected to your filter wheel; allowing you to achieve fast conversion between different filters; very convenient\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky Mentor","offers":[{"title":"Default Title","offer_id":40474926743665,"sku":"SMT-DARK2","price":19.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/IMG_20240109_161728.jpg?v=1776459031"},{"product_id":"askar-colourmagic-duo-band-c-filter-ha-oiii-2","title":"Askar ColourMagic 2\" Duo-Band C2 Filter -SII + OIII - CM-DUO-C2","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDesigned for deep-sky imaging of emission nebulae with a color camera, the Askar ColourMagic C2 Duo-Band Filter permits both Sulfur II and Oxygen III wavelengths through while blocking those that contribute to light pollution.  The peak transmission is 90% at the center wavelength of 500.7nm and 672nm.  This combination will enhance contrast, darken the background sky, and produce better images of emission nebulae.  \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhile this filter is similar to the D1 duo-narrowband filter, it is improved as far as peak transmission (90% vs 85%) and filter thickness (2mm vs 1.85mm).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eColourMagic C2 Duo-Band Filter Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFWHM:  OIII = 35nm+\/-5nm, SII = 15nm+\/-3nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCWL:  500.7nm \u0026amp; 672nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePeak Transmittance:  90%\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFilter Thickness:  2 +\/- 0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eBarrier Property:  OD3 @ 200-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSurface Finish:  60\/40\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":40497185882225,"sku":"ASK-CM-DUO-C2","price":163.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ColourMagic_C2.png?v=1776459094"},{"product_id":"askar-colourmagic-duo-band-c-filter-sii-oiii-2","title":"Askar ColourMagic 2\" Duo-Band C1 Filter - Ha + OIII - CM-DUO-C1","description":"\u003cp\u003eDesigned for deep-sky imaging of emission nebulae with a color camera, the Askar ColourMagic C1 Duo-Band Filter permits both H-alpha and Oxygen III wavelengths through while blocking those that contribute to light pollution.  The peak transmission is 90% at the center wavelength of 500.7nm and 656.6nm.  This combination will enhance contrast, darken the background sky, and produce better images of emission nebulae.  \u003c\/p\u003e\n\u003cp\u003eWhile this filter is similar to the D1 duo-narrowband filter, it is improved as far as peak transmission (90% vs 85%) and filter thickness (2mm vs 1.85mm).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eColourMagic C1 Duo-Band Filter Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFWHM:  OIII = 35nm+\/-5nm, Ha = 15nm+\/-3nm\u003c\/p\u003e\n\u003cp\u003eCWL:  500.7nm \u0026amp; 656.6nm\u003c\/p\u003e\n\u003cp\u003ePeak Transmittance:  90%\u003c\/p\u003e\n\u003cp\u003eFilter Thickness:  2 +\/- 0.05mm\u003c\/p\u003e\n\u003cp\u003eBarrier Property:  OD3 @ 200-1000nm\u003c\/p\u003e\n\u003cp\u003eSurface Finish:  60\/40\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":40497187061873,"sku":"ASK-CM-DUO-C1","price":163.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/C1-Filter.png?v=1776458910"},{"product_id":"askar-colourmagic-duo-band-c-filter-package-ha-oiii-sii-oiii-filters-2","title":"Askar ColourMagic 2\" Duo-Band C Filter Package - Ha\/OIII \u0026 SII\/OIII Filters - CM-DUO-C-PKG","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSave some money \u0026amp; enhance SII, OIII \u0026amp; Ha with this Color Magic 2\" Filter Set.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDesigned for deep-sky imaging of emission nebulae with a color camera, the Askar ColourMagic C1 \u0026amp; C2 Duo-Band Filter Package permits SII, H-alpha and Oxygen III wavelengths through while blocking those that contribute to light pollution.  The C1 filter enhances Ha \u0026amp; OIII, while the C2 filter in this package enhances SII \u0026amp; OIII.  Use them together for optimum results!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Askar_C_Comparison_480x480.jpg?v=1705519076\" style=\"display: block; margin-left: auto; margin-right: auto;\" width=\"524\" height=\"448\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe peak transmission is 90% at the center wavelength of 672nm, 656.6nm, \u0026amp; 500.7nm, .  This combination will enhance contrast, darken the background sky, and produce better images of emission nebulae.  \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhile these filters are similar to the D1 duo-narrowband filters, the C filters are improved as far as peak transmission (90% vs 85%) and filter thickness (2mm vs 1.85mm).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eColourMagic C Duo-Band Filter Package Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFWHM:  OIII = 35nm+\/-5nm, Ha = 15nm+\/-3nm, SII = 15nm+\/-3nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCWL:  500.7nm \u0026amp; 656.6nm, 672nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePeak Transmittance:  90%\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFilter Thickness:  2 +\/- 0.05mm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eBarrier Property:  OD3 @ 200-1000nm\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSurface Finish:  60\/40\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":40497190568049,"sku":"ASK-CM-DUO-C-PKG","price":308.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ColourMagic_Filter_Package.png?v=1776459032"},{"product_id":"zwo-new-efw-7x36mm-7-position-36mm-electronic-filter-wheel-zwo-efw-7x36-ii","title":"ZWO EFW Electronic Filter Wheel - Seven Positions for 36 mm Filters - EFW-7X36-II","description":"\u003cdiv class=\"card__header\"\u003e\n\u003ch3 class=\"card__title heading h3\" style=\"text-align: center;\"\u003eZWO EFW-7X36-II Electronic Filter Wheel\u003cbr\u003e\nSeven Positions for 36 mm Unthreaded Filters\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card__section\"\u003e\n\u003cdiv class=\"rte text--pull\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe 36mm EFW (Electronic Filter Wheel) independently was developed by ZWO for astronomical monochrome cameras. With the larger body and the newly-added screw holes on the covers, it will provide a much easier way to connect to ASI cameras.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThere are 7 slots inside the EFW - we recommend you use the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/telescopescanada.ca\/collections\/no-stock\/products\/zwo-new-1-25-lrgb-4-piece-filter-set-for-asi1600-cameras?_pos=2\u0026amp;_sid=59c53024b\u0026amp;_ss=r\u0026amp;variant=32247716642896\" target=\"_blank\"\u003eZWO 36mm LRGB\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eand\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/telescopescanada.ca\/collections\/no-stock\/products\/zwo-4-piece-31mm-ha-sii-oiii-7nm-filter-set?_pos=3\u0026amp;_sid=78abaf15c\u0026amp;_ss=r\u0026amp;variant=32247654088784\" target=\"_blank\"\u003eSHO filter set\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewith it.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe body is CNC milled from an aircraft graded aluminum block. It is made with high quality and thin with the thickness of only 20mm. The heart of the EFW uses the quality stepper motors produced by NPM, Japan, which can be very trustworthy. When photographing, you can rotate the EFW in both counter clockwise or clockwise direction for filter selection. The whole operation process is rather convenient and efficient.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eComparing to the original 36mm EFW, you may find the new EFW has a bigger size. The screw holes on the front and back covers shall not only allow us directly connecting the 36mm EFW to the camera and bringing the filters closer to the camera sensor, also making the it possible to match it with M68 OAG.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThere are no need for multiple cables to power this filter wheel up, just one USB cable does the trick. The power consumption of this EFW is approximately 120mAh @5V, which can be operated from the Cooled CMOS's USB hub.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAll ZWO 36mm filters can be perfectly supported by this EFW. But if you use filters from third party, then please make sure the thickness of the filter should be between 1.5mm and 3.0mm (the thickness of the filter frame is 1.8mm).\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eTHE BEST SOLUTION FOR 55MM BACK FOCUS\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe latest connection methods for the 36mm EFW and ASI cameras can be find here: \u003ca data-mce-fragment=\"1\" aria-describedby=\"a11y-new-window-message\" rel=\"noopener\" href=\"https:\/\/astronomy-imaging-camera.com\/tutorials\/best-back-focus-length-solutions-55mm.html\" target=\"_blank\" data-mce-href=\"https:\/\/astronomy-imaging-camera.com\/tutorials\/best-back-focus-length-solutions-55mm.html\"\u003e\u003cem data-mce-fragment=\"1\"\u003eThe best solution of 55mm back focus length\u003c\/em\u003e\u003c\/a\u003e\u003cem data-mce-fragment=\"1\"\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIf you are using ASI2600, then directly head over to this instruction: \u003ca data-mce-fragment=\"1\" aria-describedby=\"a11y-new-window-message\" rel=\"noopener\" href=\"https:\/\/astronomy-imaging-camera.com\/tutorials\/asi2600-guide-4-connection-methods-to-get-55mm-back-focus-length.html\" data-mce-href=\"https:\/\/astronomy-imaging-camera.com\/tutorials\/asi2600-guide-4-connection-methods-to-get-55mm-back-focus-length.html\" target=\"_blank\"\u003e\u003cem data-mce-fragment=\"1\"\u003e\u003cu data-mce-fragment=\"1\"\u003e[ASI2600 Guide] 4 Connection methods to get 55mm back focus length\u003c\/u\u003e\u003c\/em\u003e\u003cu data-mce-fragment=\"1\"\u003e.\u003c\/u\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" aria-describedby=\"a11y-new-window-message\" rel=\"noopener\" href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/4562.jpg\" target=\"_blank\" data-mce-href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/4562.jpg\"\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" data-mce-fragment=\"1\" class=\"aligncenter size-full wp-image-28867\" src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/4562.jpg\" alt=\"456\" width=\"562\" height=\"393\" data-mce-src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/4562.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":41006897463409,"sku":"ZWO-EFW-7X36-II","price":419.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/zwo-filter-wheel-zwo-new-efw-7x36mm-7-position-36mm-electronic-filter-wheel-zwo-efw-7x36-ii-28021393522870.jpg?v=1776458988"},{"product_id":"zwo-lrgb-36mm-filters","title":"ZWO LRGB 36mm Filters - LRGB36","description":"\u003cp\u003eThe ZWO LRGB 36mm unmounted filters have better transmission, better coating, better color separation.\u003c\/p\u003e\n\u003cp\u003eThe RGB color combine weights will be approximately 1:1:1\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront\u003c\/li\u003e\n\u003cli\u003eMore than 92% transmission at passband\u003c\/li\u003e\n\u003cli\u003eInfrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli\u003ePrecision off-band blocking\u003c\/li\u003e\n\u003cli\u003eMulti-layers anti-reflection coating\u003c\/li\u003e\n\u003cli\u003eSmall spectral gap to minimize effect of light pollution\u003c\/li\u003e\n\u003cli\u003eMore parfocal thickness 2mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36MM-L.jpg\"\u003e\u003cimg class=\"alignnone size-full wp-image-4588\" src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36MM-L.jpg\" alt=\"36mm-l\" width=\"551\" height=\"551\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36mm-R.jpg\"\u003e\u003cimg class=\"alignnone size-full wp-image-4569\" src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36mm-R.jpg\" alt=\"36mm-r\" width=\"558\" height=\"558\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36mm-G.jpg\"\u003e\u003cimg class=\"alignnone size-full wp-image-4568\" src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36mm-G.jpg\" alt=\"36mm-g\" width=\"559\" height=\"559\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36MM-B.jpg\"\u003e\u003cimg class=\"alignnone size-full wp-image-4570\" src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/36MM-B.jpg\" alt=\"36mm-b\" width=\"559\" height=\"559\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSometimes it's hard to tell which side of the filter is the top, and which is the bottom.  The image below should help you:\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ZWO_LRGB_Filters_SideA_SideB.jpg?v=1718741990\" width=\"559\" height=\"343\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":41006911520881,"sku":"ZWO-LRGB36","price":279.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/36mm-LRGB-460x460__34168.jpg?v=1776459019"},{"product_id":"zwo-36mm-ha-sii-oiii-7nm-unmounted-filter-set-zwo-nb7nmd36","title":"ZWO 36mm Ha SII OIII 7nm Unmounted Filter Set - NB7NMD36","description":"\u003ch2 style=\"text-align: center;\"\u003e36mm SHO 7nm Filter Set\u003c\/h2\u003e\n\u003cp\u003eThis filter set includes the ZWO 7nm Ha, SII \u0026amp; OIII filters that are compatible with 36mm filter wheels.  Here's more information on each of the filters, all of which come in their own plastic storage case.\u003c\/p\u003e\n\u003ch3\u003eH-Alpha\u003c\/h3\u003e\n\u003cp\u003eThe ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution, just prepare to experience the infinite fun with it!\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eSII\u003c\/h3\u003e\n\u003cp\u003eThe ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eOIII\u003c\/h3\u003e\n\u003cp\u003eThe ZWO narrowband O-III 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centred on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favourite nebulas in a totally new light, no matter how polluted your skies may be!\u003c\/p\u003e\n\u003cp\u003eIt can reduce the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCreate the Hubble look by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/li\u003e\n\u003cli\u003eNarrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks\u003c\/li\u003e\n\u003cli\u003eUse the H-alpha filter to blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eName: ZWO SHO 36mm Filter Set\u003c\/li\u003e\n\u003cli\u003eSize: D=36mm\u003c\/li\u003e\n\u003cli\u003eThickness: 2mm\u003c\/li\u003e\n\u003cli\u003eFWHM：7±0.5nm\u003c\/li\u003e\n\u003cli\u003eGlass Thickness 2.0+\/-0.03 mm (31mm\/36mm)\u003c\/li\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront over the both surfaces\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at H-alpha line 656nm (H-Alpha filter )\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at SII line 672nm (SII filter )\u003c\/li\u003e\n\u003cli\u003eAbout 90% transmission at major OIII line 500nm (OIII filter )\u003c\/li\u003e\n\u003cli\u003eInfrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli\u003e\u0026lt;0.1% transmission of off-band, OD3(Optical Density)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/astronomy-imaging-camera.com\/wp-content\/uploads\/NB-filters-TP.jpg\"\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":41011262357617,"sku":"ZWO-NB7NMD36","price":671.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/36mm_narrowband_filter_set-sw_600x600_09c6cb7f-5b16-4be6-b210-74164226ee85.webp?v=1776459276"},{"product_id":"optolong-3nm-sho-s-ii-h-alpha-o-iii-filters-2","title":"Optolong 3nm SHO S-II\/H-Alpha\/O-III Filters - 2\"","description":"\u003cdiv class=\"card__header\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"card__section\"\u003e\n\u003cdiv class=\"rte text--pull\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eOptolong SHO-3nm Narrowband Filters Introduction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrow band filters, for use with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can also process the data to produce Hubble palette images. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe narrowband S-II 3nm filter  (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 672nm, and reducing light pollution and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eH-Alpha 3nm filters are a popular narrowband filter allowing 3nm bandwidth of light centered on a wavelength of 656nm through, and reducing light pollution and unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). This is the better choice of narrowband H-Alpha astrophotographer filter for highest contrast and revealing subtle nebula details. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe narrowband O-III 3nm filter is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission line, and reducing light pollution and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-Alpha and OIIII filters. They show great structural details, but have natural colors, looking like an RGB image.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHigher contrast and greater detailed viewing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDecreases background noise and improved the contrast\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIncreased faint nebula signal for brighter objects\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith this narrow band filters kit you can create Hubble palette images\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptimized substrate and coating technology\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eReference Spectrum\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/56095a94c3cebfd0ebdc80f423d27c58.png\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e※This curve is only for reference, actual filter performance may vary in the field based on several factors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eHow to read the chart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e▲The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e▲The vertical axis is transmission in %.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e▲The BLUE line shows the transmission of OIII3nm. The H-Alpha 3nm line is shown in GREEN. The SII 3nm filter line is shown in RED. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"http:\/\/optolong.com\/uploads\/images\/20191111\/0ff2d7f395c427aa390ff53daf333cec.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eCoating Technology\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e·Multi-layers anti-reflection coating\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e·Non-cementing optical substrate coating\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e·Optolong filters adopt precision coatings based on ion-assisted deposition coating technology for durability and resistance to scratches as well as stability on CWL (central wavelength) - no deviation from temperature changes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e·The planetary rotation system offers precision and homogeneity of coatings ensuring highest values of transmission of pass-band and optical density of off-band light.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003e\u003cspan\u003e\u003cstrong\u003eOptolong SHO-3nm Narrowband Filters Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eAs we all know, O-III narrow band filters have always have a problem with halos. Thanks to the experience of manufacturing 7nm narrow band filters, the halo of O-III 3nm filters has been minimized by optimizing the coating technology. Optolong conducted a qualitative halo test with the bright star of the Veil Nebula and it can be seen from the original picture that the O-III 3nm filter performs better with bright stars.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTelescope：RASA 11\" f2\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCamera：QHY 600\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMount: IOptron CEM120\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong O-III-3nm single 10min frame\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCopyright: Wuzhen\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/4397cdca0bb736431cb0f3d9f267cd2b.png\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eI. \u003cu\u003eThe Bubble Nebula (NGC 7635)  © \u003ca href=\"https:\/\/astrodoc.ca\/hubble-bubble\/?fbclid=IwAR1BN9oaT7frsUM5dOT7Nm7ZZIxhrM-huHrAqD4Psm4eY3BJLncXTwZyy98\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eAstrodoc Ron Brecher \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAcquisition, focusing, and control of Paramount MX mount with N.I.N.A., TheSkyX and PHD2. Focus with Optec DirectSync motor and controller. Equipment control with PrimaLuce Labs Eagle 4 Pro computer. All pre-processing and processing in PixInsight. Acquired from Ron‘s \u003ca href=\"https:\/\/skyshed.com\/\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eSkyShed\u003c\/a\u003e in Guelph. Average transparency and seeing. Data acquired Oct 18-19, 2021 under a brightly moonlit sky (Moon 12 days old)..\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSky-Watcher Esprit 150 f\/7 refractor and QHY600M camera with Optolong H-alpha, O(III) and S(II) 3nm filters – FIRST LIGHT WITH 3nm BANDPASS FILTERS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHa: 9 x 20m = 3hr00m\u003cbr\u003eO3: 10 x 20m = 3hr20m\u003cbr\u003eS2: 9 x 20m = 3hr00m\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTotal: 9hr20m\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eImage scale 0.72 arcsec per pixel \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astrodoc.ca\/hubble-bubble\/?fbclid=IwAR1BN9oaT7frsUM5dOT7Nm7ZZIxhrM-huHrAqD4Psm4eY3BJLncXTwZyy98\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/14a06805527ed873c87d3906b9ff5480.jpg\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅡ.\u003cu\u003e Pacman Nebula NGC 281 in the Hubble Palette  © \u003ca href=\"https:\/\/astrodoc.ca\/hubble-bubble\/?fbclid=IwAR1BN9oaT7frsUM5dOT7Nm7ZZIxhrM-huHrAqD4Psm4eY3BJLncXTwZyy98\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eLuca Fornaciari Astrophotography  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePacman Nebula NGC 281 in the Hubble Palette\u003cbr\u003eWith the bad weather persisting I have taken these last few weeks to experiment with new way in the development of narrowband shots.\u003cbr\u003eI'm happy because I'm defining a Hubble Palette that really feels mine, designing it a little at a time.\u003cbr\u003eNarrowband is creative and fun because it allows us a good deal of freedom to experiment with the integration of the individual channels and the image you see is a developing version of what I am building.\u003cbr\u003eThe image was obtained with the new 3nm Optolong filters. If the bad weather will allow me a few nights I will soon finish my tests on these filters, but for now the impressions are really good.\u003cbr\u003e240 minutes of Ha, 510 of OIII and 260 minutes of SII with the ASI 294MM and the Sky-Watcher 300 f\/4.\u003cbr\u003eI wish you a beautiful sunny day!\u003cbr\u003eSETUP:\u003cbr\u003eSky-Watcher 300 f \/ 4 on EQ8R-Pro\u003cbr\u003eZWO ASI 294MM, \u003cstrong\u003eOptolong Filters Ha 3nm, OIII 3nm, SII 3nm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo?fbid=317253446884697\u0026amp;set=a.294756879134354\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/991d6920cac738a1ac8277a582bac7dd.jpg\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIII.\u003cu\u003e NGC7000  © \u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eTommaso Massimo Stella  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFinalmente, dopo mesi, sono riuscito a testare parte dei nuovi filtri Optolong Astronomy Filter\u003cstrong\u003e ha 3nm\u003c\/strong\u003e ancora non sul mercato (sono un beta tester).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/cd8b15936c6847961837359233668f42.jpg\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅣ.\u003cu\u003e Nebulose Nord America  © \u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eTommaso Massimo Stella  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTest dei nuovi filtri Optolong Astronomy Filter H alpha e OIII a 3nm (non ancora sul mercato) sotto cieli inquinati (Bortle 8\/9), con camera a colori e diametro limitato.\u003cbr\u003eElaborazione basica, senza considerare il colore delle stelle.\u003cbr\u003ePurtroppo il meteo mi ha concesso circa 3 ore per canale, manca ancora l'SII per comporre l'Hubble palette, spero di poter terminare la prossima settimana.\u003cbr\u003eLights: \u003cstrong\u003e12x900s (Ha 3nm) + 20x600s (OIII 3nm)\u003c\/strong\u003e\u003cbr\u003eTelescope: Takahashi FS-60CB + Reducer 0,72x\u003cbr\u003eCamera: QHY 168C\u003cbr\u003eMount: Skywatcher AZ-EQ6 GT\u003cbr\u003eProcessing: DeepSkyStacker, PixInsight, Photoshop CC   \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221731702215327\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/287447fea211bf2ccedc07827566b595.jpg\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eV.\u003cu\u003e North America \u0026amp; Pelican Nubulae (Hubble Palette)  © \u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eTommaso Massimo Stella  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eShooting took place in 2021 in Taranto (Italy) at about 20m above sea level.\u003cbr\u003eLights: 16x900s Ha + 21x600s OIII + 9x900s OIII + 16x900s SII\u003cbr\u003eSky: Bortle 9\u003cbr\u003eTotal exposure: 13,75 h\u003cbr\u003eTelescope: Takahashi FS-60CB + Reducer 0,72x\u003cbr\u003eCamera: QHY 168C\u003cbr\u003eFilters: Optolong Astronomy Filter \u003cstrong\u003eHa, OIII, SII 3nm\u003c\/strong\u003e\u003cbr\u003eMount: Skywatcher AZ-EQ6 GT\u003cbr\u003eProcessing: DeepSkyStacker, PixInsight, Photoshop CC\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221855955121572\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/128c7ecb6dab1b8929703eb3a4c2112b.jpg\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅥ.\u003cu\u003e The Lobster Claw Nebula  © Astrodoc Ron Brecher\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAcquisition, focusing, and control of Paramount MX mount with N.I.N.A., TheSkyX and PHD2. Focus with Optec DirectSync motor and controller. Equipment control with PrimaLuce Labs Eagle 4 Pro computer. All pre-processing and processing in PixInsight. Acquired from my \u003ca href=\"https:\/\/skyshed.com\/\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eSkyShed\u003c\/a\u003e in Guelph. Average transparency and seeing. Acquired in fall of 2021 under a partly moonlit sky.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSky-Watcher Esprit 150 f\/7 refractor and QHY600M camera with \u003cstrong\u003eOptolong H-alpha, O(III) and S(II) 3nm filters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eChrominance: Takahashi FSQ-106 ED IV @ f\/5 and QHY367C Pro one-shot colour camera with Optolong UV\/IR filter. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHa: 22 x 20m = 7hr20m\u003cbr\u003eO3: 22 x 20m = 7hr20m\u003cbr\u003eS2: 22 x 20m = 7hr20m189 x 5m\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOSC = 15hr45m\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTotal: 22hr for narrowband image; 37hr45m for broadband\/narrowband blend\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eImage scale 0.72 arcsec per pixel  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProcessing workflow is for the Hubble Palette image. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe broadband image was processed similar to \u003ca href=\"https:\/\/astrodoc.ca\/ic-5068\/\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eIC 5068\u003c\/a\u003e, with the luminance of the narrowband image used instead of Ha alone.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eData Reduction and Cleanup\u003cbr\u003eThe WeightedBatchPreProcessing script was used to perform calibration, cosmetic correction, weighting, registration and integration of all frames. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astrodoc.ca\/lobster-claw\/?fbclid=IwAR2RGCHZvQBaqsNOhFm83nRrC5pVHXXq9iVBC_Qy0NIj7BYAaGp9AgSKn5I\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/f91f0bc04fb22c68f6c0ac11fa7b00ab.jpg\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅦ.\u003cu\u003e NGC6960 © \u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=2981303708797488\u0026amp;set=a.1385013411759867\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eAndrea Andreotto Maggi Astrophoto\u003c\/a\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTelescopio Artec 200\u003cbr\u003eCamera Zwo Asi 294 MM\u003cbr\u003eFiltri Optolong Astronomy Filter \u003cstrong\u003eRGB HA 3nm OIII 3nm\u003c\/strong\u003e\u003cbr\u003e60 Light RED 300 sec\u003cbr\u003e60 Light GREEN 300 sec\u003cbr\u003e60 Light BLUE 300 sec\u003cbr\u003e36 light HA 600 sec\u003cbr\u003e36 light OIII 600 sec\u003cbr\u003eMontatura 10 Micron 1000 hps\u003cbr\u003eSoftware Voyager Astrophotography Automation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/ce882079db0e723d48abd5b89337cc5e.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅧ.\u003cu\u003e Rosette nebula © \u003ca href=\"https:\/\/www.facebook.com\/photo?fbid=2990297881231404\u0026amp;set=a.1385013411759867\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003eAndrea Andreotto Maggi Astrophoto\u003c\/a\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProve di post su vecchie riprese\u003cbr\u003eTelescopi o obiettivi di acquisizione: Sharpstar 76EDPH · \u003cbr\u003eCamere zwo asi 071 MC zwo Asi 1600 MM zwo asi 2600 MC \u003cbr\u003eMontature: SkyWatcher EQ6 PRO GOTO \u003cbr\u003eFiltri: Optolong \u003cstrong\u003e2\" Ha O3 S2\u003c\/strong\u003e · Optolong L-Pro 2\" · Optolong L-eNhance\u003cbr\u003e58 light 300 sec\u003cstrong\u003e L-PRO\u003c\/strong\u003e\u003cbr\u003e70 light 600 sec \u003cstrong\u003eL-eNhance\u003c\/strong\u003e\u003cbr\u003e20 light 600 sec HA\u003cbr\u003e20 Light 600 sec OIII\u003cbr\u003e20 Light 600 sec SII \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/ee5691a92bcf2b9f7a7ccf80c878359b.jpg\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅨ.\u003cu\u003e Ha3nm test © YaGe\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=10221694325160924\u0026amp;set=a.1349013078910\" rel=\"noopener\" aria-describedby=\"a11y-new-window-message\" target=\"_blank\"\u003e  \u003c\/a\u003e \u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLens: SharpStar ACL200\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCamera: ZWO ASI 6200 MM Pro\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMount: iOptron CEM60\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGuide: SharpStar ACL200\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStar guide camera: ZWO ASI290MM mini\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSoftware: Pleiades Astrophoto PixInisight ·\u003c\/span\u003e\u003cspan\u003eAstro Pixel Processor \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFilter: \u003cstrong\u003eOptolong Ha 3nm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCopyright：鸭哥\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20211201\/1aa189a6260eac8d82b96ce1f393bea0.png\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About product color: Due to the influence of ambient light, color difference of the display and flash photography, the color of the product may have some color difference. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About the coating: The interference filter will show different colors under different light, which is a normal phenomenon. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About the product style: In order to improve the product, changes to design\/appearance\/parameters may be updated over time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About the product description: The different sizes of this product have the same material, technology and design.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":41021380132977,"sku":"OPTO-SHO-3NM-2","price":1740.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/optolong-filter-optolong-3nm-sho-s-ii-h-alpha-o-iii-filters-36455684604123.webp?v=1776459026"},{"product_id":"svbony-sv220-2-dual-band-7nm-nebula-filter-w9172b","title":"Svbony SV220 2\" Dual Band 7nm HA \u0026 OIII Filter - W9172B","description":"\u003ch3 style=\"text-align: center;\"\u003eSvbony Dual-Band 7nm H-Alpha\/OIII 2\" Filter\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThis Svbony H-Alpha\/OIII 7nm Narrowband Filter is designed for astrophotography in dark skies as well as a light polluted environment. Take color images without the need for separate Oxygen III and H-Alpha filters. The Dual-Band Filter is useful for imaging emission nebulae, planetary nebulae and supernova remnants. It will also sharply cut off the inference of artificial light from sodium vapor or mercury vapor street lights and other unwanted disturbance like sky glow...and even moonlight...drastically reducing the effects of natural and artificial light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 7nm bandwidth strongly isolates red (H-alpha) and green\/blue (OIII) emissions while blocking light pollution.  This maximizes the nebula's signal and darkens the background sky at the same time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003eNote:  This filter is designed for focal ratios of f\/5 and slower.  \u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConnection Chart: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" height=\"341\" width=\"551\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Mounting_Options.jpg?v=1717792571\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand:  Svbony\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eModel: SV220\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eName:  Duo-Band OSC Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSize:  2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Thickness:  1.80mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eClear Aperture:  44 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWavelength Range:  300 - 1100 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFWHM:  OIII (7nm), H-Alpha (7nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eBlocking:  OD5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePeak transmittance:  500.7m@T\u0026gt; 90%; 656.3m@T\u0026gt;94%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSurface quality:60\/40\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSurface parallelism:  1\/4A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eThread:  M48x0.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSingle Thread:  Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eNet Weight:  12.5g \/ 0.44oz \/0.027lb\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":41082733494385,"sku":"SBV-W9172B","price":171.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Dual_Band_Filter_Standing.jpg?v=1776459025"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/collections\/blog_40-5.jpg?v=1776826748","url":"https:\/\/khanscope.com\/collections\/imaging-filters-filterwheels.oembed?page=6","provider":"Khan Scope Centre","version":"1.0","type":"link"}