{"product_id":"celestron-uhc-lpr-filter-2-round-mounted-94124-pre-owned","title":"Celestron UHC\/LPR Filter - 2\" Round Mounted - 94124 (Pre-owned)","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Celestron UHC\/LPR Filter - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron Ultra High Contrast \/Light Pollution Reduction Filter\u003c\/b\u003e is designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIn addition to it's optimum spectral and optical characteristics, the \u003cb\u003eCelestron Ultra High Contrast \/Light Pollution Reduction Filter\u003c\/b\u003e offers important features that set it apart and result in the highest quality celestial views: The multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eImproved transmission of the \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e translates to maximum image brightness and contrast. Users of smaller, 4\"-11\" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the \u003cb\u003eCelestron UHC\/LPR Filter\u003c\/b\u003e retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass and inclusion of an extremely efficient H-Alpha passband (656nm).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron UHC\/LPR Filter - 2\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIon beam hardened using the latest technology for durability and resistance to scratching\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdvanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh transmission, sharp cutoffs, and more moderate 60nm passband retains a more natural view, yet significantly boosts overall contrast\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eImproved transmission translates to maximum image brightness and contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron UHC\/LPR Filter - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: Ultra High Contrast \/ Light Pollution Reduction\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eConstruction: Threaded Aluminum Cell\u003c\/p\u003e\n\u003cp\u003ePassband: 60nm\u003c\/p\u003e\n\u003cp\u003eTransmission: 97%\u003c\/p\u003e\n\u003cp\u003eCelestron Product Number: 94124\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":43153261232241,"sku":"USED041703","price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/973-1-thumb.jpg?v=1776448870","url":"https:\/\/khanscope.com\/fr\/products\/celestron-uhc-lpr-filter-2-round-mounted-94124-pre-owned","provider":"Khan Scope Centre","version":"1.0","type":"link"}