{"title":"Filters","description":"\u003cp\u003eBrowse our Filters collection. Best Price.\u003c\/p\u003e","products":[{"product_id":"optolong-l-pro-filter","title":"Optolong L-Pro Filter","description":"\u003ch1\u003eOptolong L-Pro Filter\u003c\/h1\u003e\n\u003cp\u003eThe Optolong L-Pro Filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in 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 photograghic purpose at sub-rural area with heavy light pollution.\u003c\/p\u003e\n\u003cp\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 to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression.\u003c\/p\u003e\n\u003ch4\u003eMain Use and Performance\u003c\/h4\u003e\n\u003cp\u003eSuitable for visual observation and astrophotography.\u003c\/p\u003e\n\u003cp\u003eL-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\u003eL-Pro filter alone can suppress infrared wavelength, and thus can be used at ease for “L” image shootings with CCDs.\u003c\/p\u003e\n\u003cp\u003eLight pollution 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\/p\u003e\n\u003cp\u003eWARNING: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eSchott substrate material\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThickness 2.0 mm (1.25”\/2”\/77mm) | 1.0 mm (Clip series)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/span\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSONY COMPATIBILITY (pre-2023) :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptolong Sony-FF clip filter available for below camera body:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA7M\/ A7M2\/ A7M3、A7R\/ A7R2\/ A7R3、A7S\/ A7S2\/ A7S3、A9\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplicable Lenses: Full range of E-mount main and auxiliary lens  \u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eCoating Technology\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMulti-layers anti-reflection coating\u003c\/li\u003e\n\u003cli\u003eNon-cementing optical substrate coating\u003c\/li\u003e\n\u003cli\u003eOptolong L-Pro filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.\u003c\/li\u003e\n\u003cli\u003ePlanetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eL-Pro Filter\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eOptolong 3-Years Warranty\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25\" Mounted","offer_id":54478568522012,"sku":"cak1787937178197","price":105.22,"currency_code":"USD","in_stock":true},{"title":"2\" Mounted","offer_id":54478568554780,"sku":"xbc1787937178198","price":150.68,"currency_code":"USD","in_stock":true},{"title":"Clip for Canon EOS APS-C","offer_id":54478568587548,"sku":"orx1787937178199","price":174.02,"currency_code":"USD","in_stock":true},{"title":"Clip for Canon EOS Full Frame","offer_id":54478568620316,"sku":"shi1787937178200","price":166.19,"currency_code":"USD","in_stock":true},{"title":"Clip for Nikon Z full frame","offer_id":54478568653084,"sku":"buj1787937178201","price":171.5,"currency_code":"USD","in_stock":true},{"title":"Clip for Nikon Full Frame","offer_id":54478568685852,"sku":"tmc1787937178202","price":163.47,"currency_code":"USD","in_stock":true},{"title":"Sony Full Frame (2023 Version) \/ Check compatibility","offer_id":54478568718620,"sku":"fpk1787937178203","price":131.89,"currency_code":"USD","in_stock":true},{"title":"EOS-R","offer_id":54478568751388,"sku":"znp1787937178204","price":186.64,"currency_code":"USD","in_stock":true},{"title":"77mm Round Mounted","offer_id":54478568784156,"sku":"gzc1787937178205","price":204.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/7950\/4156\/files\/optolong-l-pro-filter_1.webp?v=1787937182"},{"product_id":"celestron-125-uhclpr-filter-94123","title":"Celestron 1.25\" UHC\/LPR Filter (94123)","description":"\u003ch2\u003eCelestron 1.25\" UHC\/LPR Filter\u003c\/h2\u003e\n\u003cp\u003eOur 1-1\/4\" Light Pollution Reduction (LPR) Filters are 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).\u003cbr\u003e\u003cbr\u003eThe ultra high contrast (UHC) LPR filter 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.\u003cbr\u003e\u003cbr\u003eIn addition to it's optimum spectral and optical characteristics, the UHC\/LPR filter offers important features that set it apart and result in the highest quality celestial views:\u003cbr\u003e\u003cbr\u003eThe multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003cbr\u003e\u003cbr\u003eImproved transmission 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.\u003cbr\u003e\u003cbr\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the UHC\/LPR filter 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\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCelestron 1.25\" UHC\/LPR Filter\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":54478568816924,"sku":"dwb1787937178371","price":63.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/7950\/4156\/files\/celestron-125-uhclpr-filter-94123_1.webp?v=1787937183"},{"product_id":"celestron-2-uhclpr-filter-94124","title":"Celestron 2\" UHC\/LPR Filter (94124)","description":"\u003ch2\u003eCelestron 2\" UHC\/LPR Filter\u003c\/h2\u003e\n\u003cp\u003eOur 2\" Light Pollution Reduction (LPR) Filters are 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).\u003cbr\u003e\u003cbr\u003eThe ultra high contrast (UHC) LPR filter 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.\u003cbr\u003e\u003cbr\u003eIn addition to it's optimum spectral and optical characteristics, the UHC\/LPR filter offers important features that set it apart and result in the highest quality celestial views:\u003cbr\u003e\u003cbr\u003eThe multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003cbr\u003e\u003cbr\u003eImproved transmission 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.\u003cbr\u003e\u003cbr\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the UHC\/LPR filter 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\u003cul\u003e\n\u003cli\u003eOur 2\" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCelestron 2\" UHC\/LPR Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":54478568849692,"sku":"aln1787937178785","price":86.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/7950\/4156\/files\/celestron-2-uhclpr-filter-94124_1.webp?v=1787937183"},{"product_id":"optolong-l-enhance-duo-band-filter","title":"Optolong L-eNhance Duo Band Filter","description":"\u003ch1\u003eOptolong L-eNhance Duo Band Filter\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\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. The filter is available in the following sizes: 1.25″, 2″ \u0026amp; clip filter for Canon EOS. The clip version is compatible with all Canon EF lenses, but doesn’t suit Canon EF-S lenses. The following cameras are compatible: 7D2, 80D, 800D, 77D, 70D, 760D, 750D, 700D, 650D, 600D, 550D, 500D, 400D, 100D, 1100D, 1200D \u0026amp; 1300D.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Optolong L-eNhance Filterprovides an economical and practical solution for amateurs. It is a dual-band pass filter which has been designed for DSLR (digital SLR), 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 data-mce-fragment=\"1\"\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.\u003cbr data-mce-fragment=\"1\"\u003eTherefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur.\u003c\/p\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003eMain Use and Performance\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSuitable for visual observation and astrophotography.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLight pollution 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\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWARNING: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cem\u003e\u003cstrong\u003eL-Enhance Performance\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/www.optolong.com\/uploads\/images\/20210703\/48c07ebe8a88353aa27c0031c7e973d0.png?width=700\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpectrum and Characteristic\u003c\/strong\u003e\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eSbustrate:\u003c\/em\u003e B270\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cem\u003eThickness:\u003c\/em\u003e 1.85mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eTpeak:\u003c\/em\u003e  T\u0026gt;90%\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eBlocking range:\u003c\/em\u003e 300-1000nm\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eBlocking depth:\u003c\/em\u003e light pollution  line blocking \u0026gt;99%\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eSurface quality:\u003c\/em\u003e 60\/40\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eTransmitted Wavefront RMS:\u003c\/em\u003e λ\/4\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cem\u003eParallelism:\u003c\/em\u003e 30s\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eMajor Emission Lines of Nebulae : \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eH-Alpha : 656.3nm\u003c\/li\u003e\n\u003cli\u003eH-Beta : 486.1nm\u003c\/li\u003e\n\u003cli\u003eOIII : 495.nm \u0026amp; 500.7 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eOptolong 3-Years Warranty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25\"","offer_id":54478568882460,"sku":"hkk1787937179967","price":133.7,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":54478568915228,"sku":"wbe1787937179968","price":154.94,"currency_code":"USD","in_stock":true},{"title":"EOS-C Clip","offer_id":54478568947996,"sku":"wcr1787937179969","price":175.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/7950\/4156\/files\/optolong-l-enhance-duo-band-filter_1.webp?v=1787937184"},{"product_id":"antares-2-variable-neutral-density-filter-3-40-2fxp","title":"Antares 2\" Variable Neutral Density Filter 3-40% (2FXP)","description":"\u003ch2\u003eAntares 2\" Neutral Density Filter\u003c\/h2\u003e\n\u003cp\u003eNeutral density filters can reduce brightness across the visual spectrum without losing resolution, enhancing lunar-planetary observing. Can be used stacked with color filters. The Antares 2\" Variable Neutral Density Filter varies transmission from 40%-3% and threads into all 2\" accessories. NOT FOR SOLAR VIEWING  \u003c\/p\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\nAntares 2\" Variable Neutral Density Filter 3-40%\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntares 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":54478569111836,"sku":"ici1787937184571","price":42.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/7950\/4156\/files\/antares-2-variable-neutral-density-filter-3-40-2fxp_1.webp?v=1787937189"},{"product_id":"antares-125-variable-neutral-density-filter-3-40-fxp","title":"Antares 1.25\" Variable Neutral Density Filter 3-40% (FXP)","description":"\u003ch2\u003eAntares 1.25\" Variable Neutral Density Filter 3-40%\u003c\/h2\u003e\n\u003cp\u003eNeutral density filters can reduce brightness across the visual spectrum without losing resolution, enhancing lunar-planetary observing. Can be used stacked with color filters.\u003c\/p\u003e\n\u003cp\u003eThe Antares 1.25\" Variable Neutral Density Filter varies transmission from 40%-3% and threads into all 1.25\" accessories. NOT FOR SOLAR VIEWING  \u003c\/p\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\nAntares 1.25\" Variable Neutral Density Filter 3-40% \u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAntares 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":54478569963804,"sku":"jjf1787937189460","price":21.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0926\/7950\/4156\/files\/antares-125-variable-neutral-density-filter-3-40-fxp_1.webp?v=1787937192"}],"url":"https:\/\/www.lanternandloom.shop\/collections\/filters.oembed","provider":"My Store","version":"1.0","type":"link"}