{"title":"FILTERS","description":"","products":[{"product_id":"optolong-filtro-venus-uv-filter-1-25","title":"OPTOLONG VENUS UV-FILTER, 1.25''","description":"\u003cp\u003e \u003cb\u003eOptolong Venus ultraviolet filter\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003e The U Venus filter allows you to take images (CCD, DSLR, Video) in the ultraviolet spectrum and thus make cloud structures in the atmosphere of Venus visible. Many cameras are sensitive in wavelengths between 350 and 1100 nm. The filter lets light pass between approximately 320 and 400 nm (UV). However, your camera must not have a UV\/IR blocking filter, because otherwise the light let through would be blocked a priori. Some refractor lenses also block UV radiation. So: the ideal telescopes are Newtonians and RCs.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eThe advantages at a glance:\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e It allows you to photograph Venus in the UV spectrum\u003c\/li\u003e\n\n\u003cli\u003e It features multi-layer anti-reflective treatment\u003c\/li\u003e\n\n\u003cli\u003e Precision optical polishing up to 1\/4 lambda on both sides of the substrate\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e Attention, this filter must never be used alone for observing the Sun!\u003c\/p\u003e\n\n \u003cp\u003e\u003cb\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836041888,"sku":"ASF-59434-OPT060","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/59434_00_8f4a7924-7e7f-47e2-9ac8-42ec3b11096a.jpg?v=1715027854"},{"product_id":"optolong-filtro-venus-u-filter-2","title":"OPTOLONG FILTER VENUS U-FILTER 2''","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nVENUS ULTRAVIOLET FILTER BY OPTOLONG\u003c\/p\u003e\n\n\n \u003cp\u003eTHE U VENUS FILTER ALLOWS TO TAKE IMAGES (CCD, DSLR, VIDEO) IN THE ULTRAVIOLET SPECTRUM AND THUS TO MAKE THE CLOUDY STRUCTURES VISIBLE IN THE ATMOSPHERE OF VENUS. MANY CAMERAS ARE SENSITIVE IN THE WAVELENGTHS BETWEEN 350 AND 1100 NM. THE FILTER LETS THROUGH APPROXIMATELY 320 TO 400 NM (UV) LIGHT. HOWEVER, YOUR CAMERA MUST NOT HAVE A UV\/IR BLOCKING FILTER, BECAUSE OTHERWISE THE LIGHT LEFT THROUGH WOULD BE BLOCKED. SOME REFRACTOR LENSES ALSO BLOCK UV RADIATION. SO: THE IDEAL TELESCOPES ARE THE NEWTONS AND THE RC.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE ADVANTAGES AT A GLANCE:\u003c\/p\u003e\n\n\n\u003cp\u003eIT ALLOWS YOU TO PHOTOGRAPH VENUS IN THE UV SPECTRUM\u003cbr\u003e\nIT HAS A MULTILAYER ANTI-REFLECTIVE TREATMENT\u003cbr\u003e\nPRECISION OPTICAL POLISHING UP TO 1\/4 LAMBDA ON BOTH SIDES OF THE SUBSTRATE \u003cbr\u003e\nATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e\n\n\n\u003cp\u003eATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e\n\n\n\u003cp\u003eSPECIFICATIONS\u003cbr\u003e\nPERFORMANCE\u003cbr\u003e\nOPTIC COATING\u003cbr\u003e\nMULTIPLE\u003cbr\u003e\nCHASSIS\u003cbr\u003e\n2\"\u003cbr\u003e\nTRANSMISSION\u003cbr\u003e\n80\u003cbr\u003e\nSURFACE ACCURACY1\/4\u003cbr\u003e\nGENERAL\u003cbr\u003e\nMATERIALSCHOTT GLASS\u003cbr\u003e\nFILTERTYPE\u003cbr\u003e\nMANUFACTURING TECHNIQUECOMET FILTER\u003cbr\u003e\nFIELDS OF USE \u003cbr\u003e\nUSEFUL FOR PHOTOGRAPHY\u003cbr\u003e\nVENERESI\u003cbr\u003e\nUSABLE FOR VISUALINO OBSERVATIONS\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836107424,"sku":"ASF-59436-OPT061","price":255.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/59436_00_b34edf8c-7c31-4c05-8946-ede9ec3f6091.jpg?v=1773079676"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-aps-c-l-pro","title":"OPTOLONG CLIP FILTER FOR CANON EOS APS-C L-PRO","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eOptolong filter\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This filter is designed to improve the contrast of deep-sky objects and attenuate the brightness of the sky in the background, thanks to a sophisticated transmission that allows the light of the lines in which the deep-sky objects shine (H-alpha, O-III , N-II, H-Beta, S-II…), but blocks harmful light emissions (for example the Hg line, or the wavelengths of sodium vapor lighting). It also reduces the background brightness caused by the oxygen in the atmosphere (“sky glow”). The use of this filter is recommended in areas with light pollution and is suitable for both visual and photographic use.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eCompared to other filters for reducing the effects of light pollution, such as UHC or CLS filters, this multiband pass filter only has a minimal impact on color rendering. Therefore it is suitable for photographing objects that emit continuous light: not only emission nebulae, but also galaxies, star clusters, reflection nebulae, etc. You can achieve exposures up to 3 times longer than exposures without a filter.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Features of the treatment:\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The treatments are not cemented onto the optical support, but spread by electron beam evaporation and subsequent ion beam-assisted deposition (IBAD process). This special process allows for extreme durability and scratch resistance, ensures central wavelength (CWL) stability and prevents thermal drift. Furthermore, it allows high transmission in the passband and high optical density in the blocked frequency range.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836205728,"sku":"ASF-59440","price":239.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59440_00.jpg?v=1773079712"},{"product_id":"optolong-filtro-lrgb-filter-set-1-25","title":"OPTOLONG FILTER LRGB FILTER-SET 1.25","description":"\u003cp\u003e \u003cb\u003eLRGB Filter Set - Astrophotography with CCD monochrome cameras\u003c\/b\u003e\u003cbr\u003e Four filters for a color image: With the LRGB filter set you can photograph the sky in color with a monochrome chip. Monochrome CCD astronomical cameras capture Deep-Sky objects at high resolutions because all the pixels on the chip work for the same image. With color CCD chips the resolution is reduced because ⅓ of the pixels are used for the color image.\u003c\/p\u003e\n\n\u003cp\u003e With a set of LRGB filters and a monochrome camera you can use all the chips for high resolution shots.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eL - The luminance filter\u003c\/b\u003e \u003cbr\u003eThe luminance filter lets all visible light through and blocks the near sector of UV and IR light. Therefore, with the luminance filter, all the information of the object is captured.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eRGB - each filter has its job\u003c\/b\u003e\u003cbr\u003e The three letters of RGB indicate three different colored filters thanks to which color images are obtained. The colors that we perceive derive from the fundamental colors Red, Green and Blue. From these all the colors we know are generated. Our eyes also mix all the colors of our world with internal RGB receptors (or filters).\u003c\/p\u003e\n\n\u003cp\u003e During the image processing phase, the four images of the LRGB channel are combined. This is how the color image is generated.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eAdvise:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eTo photograph with the LRGB filter set use the Omegon filter wheel to change filters in seconds.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eThe advantages at a glance:\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e LRGB filter set for color images with CCD monochrome cameras\u003c\/li\u003e\n\n \u003cli\u003eComplete chip resolution thanks to four different color filters\u003c\/li\u003e\n\n\u003cli\u003e Durable: Anti-scratch coating\u003c\/li\u003e\n\n\u003cli\u003e Natural colors for Deep-Sky objects and planets\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836304032,"sku":"ASF-67533-LRGB-1","price":229.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67533_00.jpg?v=1773079729"},{"product_id":"optolong-clip-filter-per-nikon-full-frame-l-pro","title":"OPTOLONG CLIP FILTER FOR NIKON FULL FRAME L-PRO","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eOptolong filter\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This filter is designed to improve the contrast of deep-sky objects and attenuate the brightness of the sky in the background, thanks to a sophisticated transmission that allows the light of the lines in which the deep-sky objects shine (H-alpha, O-III , N-II, H-Beta, S-II…), but blocks harmful light emissions (for example the Hg line, or the wavelengths of sodium vapor lighting). It also reduces the background brightness caused by the oxygen in the atmosphere (“sky glow”). The use of this filter is recommended in areas with light pollution and is suitable for both visual and photographic use.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eCompared to other filters for reducing the effects of light pollution, such as UHC or CLS filters, this multiband pass filter only has a minimal impact on color rendering. Therefore it is suitable for photographing objects that emit continuous light: not only emission nebulae, but also galaxies, star clusters, reflection nebulae, etc. You can achieve exposures up to 3 times longer than exposures without a filter.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Features of the treatment:\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The treatments are not cemented onto the optical support, but spread by electron beam evaporation and subsequent ion beam-assisted deposition (IBAD process). This special process allows for extreme durability and scratch resistance, ensures central wavelength (CWL) stability and prevents thermal drift. Furthermore, it allows high transmission in the passband and high optical density in the blocked frequency range.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e with frame for mounting on Nikon cameras\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836467872,"sku":"ASF-59454-OPT010","price":249.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59454_00.jpg?v=1773079747"},{"product_id":"optolong-filtro-lrgb-filter-set-2","title":"OPTOLONG LRGB FILTER-SET 2\"","description":"\u003cp\u003e PRODUCT DESCRIPTION \u003cbr\u003e\nLRGB FILTER SETS - ASTROPHOTOGRAPHY WITH CCD MONOCHROME CAMERAS\u003cbr\u003e\nFOUR FILTERS FOR A COLOR IMAGE: WITH THE LRGB FILTER SET YOU CAN PHOTOGRAPH THE SKY IN COLOR WITH A MONOCHROME CHIP. CCD MONOCHROME ASTRONOMICAL CAMERAS CAPTURE DEEP-SKY OBJECTS AT HIGH RESOLUTIONS BECAUSE ALL THE PIXELS OF THE CHIP WORK FOR THE SAME IMAGE. WITH COLOR CCD CHIPS THE RESOLUTION IS REDUCED BECAUSE ⅓ OF THE PIXELS ARE USED FOR THE COLOR IMAGE.\u003c\/p\u003e\n\n\n\u003cp\u003eWITH A SET OF LRGB FILTERS AND A MONOCHROME CAMERA YOU CAN USE ALL THE CHIPS FOR HIGH RESOLUTION SHOTS.\u003c\/p\u003e\n\n\n\u003cp\u003eL - THE LUMINANCE FILTER \u003cbr\u003e\nTHE LUMINANCE FILTER LETS ALL VISIBLE LIGHT THROUGH AND BLOCKS THE SECTOR NEAR UV AND IR LIGHT. THEREFORE WITH THE FILTER BY LUMINANCE ALL THE INFORMATION OF THE OBJECT IS COLLECTED.\u003c\/p\u003e\n\n\n\u003cp\u003eRGB - EACH FILTER HAS ITS OWN JOB\u003cbr\u003e\nTHE THREE LETTERS OF RGB INDICATE THREE DIFFERENT COLOR FILTERS THROUGH WHICH COLOR IMAGES ARE OBTAINED. THE COLORS THAT WE PERCEIVE DERIVE FROM THE FUNDAMENTAL COLORS RED, GREEN AND BLUE. FROM THESE ARE GENERATED ALL THE COLORS WE KNOW. EVEN OUR EYES MIX ALL THE COLORS OF OUR WORLD WITH INTERNAL RGB RECEPTORS (OR FILTERS).\u003c\/p\u003e\n\n\n\u003cp\u003eDURING THE IMAGE PROCESSING PHASE THE FOUR IMAGES OF THE LRGB CHANNEL ARE COMBINED. THIS IS HOW THE COLOR IMAGE IS GENERATED.\u003c\/p\u003e\n\n\n \u003cp\u003eTIP: FOR PHOTOGRAPHING WITH THE LRGB FILTER SET, USE THE OMEGON FILTER WHEEL TO CHANGE THE FILTER IN SECONDS.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE ADVANTAGES AT A GLANCE:\u003c\/p\u003e\n\n\n\u003cp\u003eLRGB FILTER SETS FOR COLOR IMAGES WITH CCD MONOCHROME CAMERAS\u003cbr\u003e\nFULL CHIP RESOLUTION THANKS TO FOUR DIFFERENT COLOR FILTERS\u003cbr\u003e\nDURABLE: SCRATCH RESISTANT COATING\u003cbr\u003e\nNATURAL COLORS FOR DEEP-SKY OBJECTS AND PLANETS\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836598944,"sku":"OP-67534","price":329.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67534_00.jpg?v=1773079765"},{"product_id":"optolong-filtro-ubvri-set-photometric-1-25","title":"OPTOLONG UBVRI FILTER SET PHOTOMETRIC 1.25''","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nOPTOLONG UBVRI PHOTOMETRIC FILTERS SET - ON FRAME \u003cbr\u003e\nTHIS UBVRI PHOTOMETRIC FILTER SET CONSISTS OF FIVE FILTERS IN A 1.25\" OR 2 ROUND FRAME: ULTRAVIOLET (U), BLUE (B), VISUAL (V), RED (R), AND INFRARED (I). THIS SET IS MANUFACTURED WITH HIGH QUALITY BRANDED GLASS EQUIPPED WITH AN ION BEAM ASSISTED MULTI-LAYER DEPOSITION TREATMENT, WHICH GUARANTEES EXTREME SCRATCH RESISTANCE AND ENSURE CENTER WAVELENGTH STABILITY. THE SET IS DESIGNED FOR USE WITH FILTER WHEELS, WITH BOTH 1.25\" AND 2\" HOUSINGS.\u003c\/p\u003e\n\n\n\n\u003cp\u003eQUALITY MATERIALS:\u003c\/p\u003e\n\n\n\u003cp\u003eGERMAN MADE BRAND GLASS SUBSTRATE, 1.85MM THICK\u003cbr\u003e\nMULTILAYER ANTI-REFLECTIVE TREATMENT, DEPOSITED BY ELECTRON BEAM EVAPORATION AND ION BEAM ASSISTED DEPOSITION \u003cbr\u003e\nQUALITY FINISHES\u003c\/p\u003e\n\n\n\u003cp\u003eOPTICALLY POLISHED SUBSTRATE FOR UP TO 1\/4 LAMBDA AND \u0026lt;30 ARCSECOND PARALLELISM ON BOTH SIDES\u003cbr\u003e\n60\/40 POLISH QUALITY TO MIL-O-13830 SPECIFICATIONS\u003cbr\u003e\nUNIFORM AND PRECISE COATING METHOD THAT GUARANTEES HIGH PASSBAND TRANSMISSION AND PRECISE OFF-BAND BLOCKOUT.\u003cbr\u003e\nEACH FILTER COMES WITH A PLASTIC CASE WITH EVA PADDING.\u003cbr\u003e\nATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e\n\n\n\u003cp\u003eATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836730016,"sku":"ASF-59437-OPT067","price":629.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59437_00.jpg?v=1773079782"},{"product_id":"optolong-filtro-ubvri-set-photometric-2","title":"OPTOLONG UBVRI FILTER SET PHOTOMETRIC 2''","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nOPTOLONG UBVRI PHOTOMETRIC FILTERS SET - ON FRAME \u003cbr\u003e\nTHIS UBVRI PHOTOMETRIC FILTER SET CONSISTS OF FIVE FILTERS IN A 1.25\" OR 2 ROUND FRAME: ULTRAVIOLET (U), BLUE (B), VISUAL (V), RED (R), AND INFRARED (I). THIS SET IS MANUFACTURED WITH HIGH QUALITY BRANDED GLASS EQUIPPED WITH AN ION BEAM ASSISTED MULTI-LAYER DEPOSITION TREATMENT, WHICH GUARANTEES EXTREME SCRATCH RESISTANCE AND ENSURE CENTER WAVELENGTH STABILITY. THE SET IS DESIGNED FOR USE WITH FILTER WHEELS, WITH BOTH 1.25\" AND 2\" HOUSINGS.\u003c\/p\u003e\n\n\n\n\u003cp\u003eQUALITY MATERIALS:\u003c\/p\u003e\n\n\n\u003cp\u003eGERMAN MADE BRAND GLASS SUBSTRATE, 1.85MM THICK\u003cbr\u003e\nMULTILAYER ANTI-REFLECTIVE TREATMENT, DEPOSITED BY ELECTRON BEAM EVAPORATION AND ION BEAM ASSISTED DEPOSITION \u003cbr\u003e\nQUALITY FINISHES\u003c\/p\u003e\n\n\n\u003cp\u003eOPTICALLY POLISHED SUBSTRATE FOR UP TO 1\/4 LAMBDA AND \u0026lt;30 ARCSECOND PARALLELISM ON BOTH SIDES\u003cbr\u003e\n60\/40 POLISH QUALITY TO MIL-O-13830 SPECIFICATIONS\u003cbr\u003e\nUNIFORM AND PRECISE COATING METHOD THAT GUARANTEES HIGH PASSBAND TRANSMISSION AND PRECISE OFF-BAND BLOCKOUT.\u003cbr\u003e\nEACH FILTER COMES WITH A PLASTIC CASE WITH EVA PADDING.\u003cbr\u003e\nATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e\n\n\n\u003cp\u003eATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836828320,"sku":"ASF-59438-OPT068","price":729.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59438_00.jpg?v=1773079799"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-aps-c-cls","title":"OPTOLONG CLIP FILTER FOR CANON EOS APS-C CLS","description":"\u003cp\u003e The CLS (City Light Suppression) broadband filter was designed to improve the visibility of various deep-sky objects.\u003c\/p\u003e\n\n \u003cp\u003eThis is achieved in part by reducing the transmission of light pollution wavelengths, particularly those resulting from artificial lighting including mercury vapor lamps. But also by blocking the emissions of sodium vapor lamps and the harmful sky glow effect. Together with the highly transparent transmission lines OIII (496 nm and 500 nm), H-beta (486 nm), NII (654 nm and 658 nm), H-alpha (656 nm) and SII (672 nm) this filter is perfect for improving contrast and details for visual and photographic uses, in areas with strong light pollution.\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Suitable for unmodified color CCD and DSLR cameras\u003c\/li\u003e\n\n\u003cli\u003e The CLS filter has a wider pass range than UHC and is therefore ideal for observation in light to moderate light pollution conditions\u003c\/li\u003e\n\n \u003cli\u003eLight pollution filters do not eliminate its effects, nor do they increase the brightness of objects. In many cases it increases the contrast between the nebula and the night sky, without increasing the brightness of the nebula.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003cb\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778836959392,"sku":"ASF-59442","price":136.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59442_00.jpg?v=1773079818"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-aps-c-cls-ccd-solo-per-camere-modificate","title":"OPTOLONG CLIP FILTER FOR CANON EOS APS-C CLS-CCD (ONLY FOR MODIFIED CAMERAS)","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The CLS (City Light Suppression) broadband filter was designed to improve the visibility of various deep-sky objects.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThis is achieved in part by reducing the transmission of light pollution wavelengths, particularly those resulting from artificial lighting including mercury vapor lamps. But also by blocking the emissions of sodium vapor lamps and the harmful sky glow effect. Together with the highly transparent transmission lines OIII (496 nm and 500 nm), H-beta (486 nm), NII (654 nm and 658 nm), H-alpha (656 nm) and SII (672 nm) this filter is perfect for improving contrast and details for visual and photographic uses, in areas with strong light pollution.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e The CLS-CCD filter differs from the CLS by an infrared wavelength of 700-1100 nm\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Suitable for CCD and DSLR color cameras modified for astrophotography\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Great for most emission nebulae, planetary nebulae and supernova remnants\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Noticeable increase in contrast and visibility of the faintest and peripheral details\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003eLight pollution filters do not eliminate its effects, nor do they increase the brightness of objects. In many cases it increases the contrast between the nebula and the night sky, without increasing the brightness of the nebula.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837057696,"sku":"ASF-59443-OPT056","price":129.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59443_00.jpg?v=1773079836"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-ff-cls","title":"OPTOLONG CLIP FILTER FOR CANON EOS FF CLS","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The CLS (City Light Suppression) broadband filter was designed to improve the visibility of various deep-sky objects.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThis is achieved in part by reducing the transmission of light pollution wavelengths, particularly those resulting from artificial lighting including mercury vapor lamps. But also by blocking the emissions of sodium vapor lamps and the harmful sky glow effect. Together with the highly transparent transmission lines OIII (496 nm and 500 nm), H-beta (486 nm), NII (654 nm and 658 nm), H-alpha (656 nm) and SII (672 nm) this filter is perfect for improving contrast and details for visual and photographic uses, in areas with strong light pollution.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e with frame for mounting on Canon EOS cameras with full-frame sensor\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003eAttention: the filter can be used with EOS 6D, EOS 5D, EOS 5D II and EOS 5D III!\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h2\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThe new models (EOS 6D II, EOS 5D IV)\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cb data-mce-fragment=\"1\"\u003eNot\u003c\/b\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eallow the use of this filter! The filter prevents the usual movement of the flip mirror when capturing images. With EOS 6D II and EOS 5D IV this port has an anomaly in the operation of the camera.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Suitable for unmodified color CCD and DSLR cameras\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e The CLS filter has a wider pass range than UHC and is therefore ideal for observation in light to moderate light pollution conditions\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Light pollution filters do not eliminate its effects, nor do they increase the brightness of objects. In many cases it increases the contrast between the nebula and the night sky, without increasing the brightness of the nebula.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837188768,"sku":"OP-59450","price":129.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59450_00.jpg?v=1773079854"},{"product_id":"optolong-filtro-l-pro-1-25","title":"OPTOLONG L-PRO FILTER 1.25''","description":"\u003cp\u003e \u003cb\u003eOptolong filter\u003c\/b\u003e\u003c\/p\u003e\n\n \u003cp\u003eThis filter is designed to improve the contrast of deep-sky objects and attenuate the brightness of the sky in the background, thanks to a sophisticated transmission that allows the light of the lines in which the deep-sky objects shine (H-alpha, O-III , N-II, H-Beta, S-II…), but blocks harmful light emissions (for example the Hg line, or the wavelengths of sodium vapor lighting). It also reduces the background brightness caused by the oxygen in the atmosphere (“sky glow”). The use of this filter is recommended in areas with light pollution and is suitable for both visual and photographic use.\u003c\/p\u003e\n\n \u003cp\u003eCompared to other filters for reducing the effects of light pollution, such as UHC or CLS filters, this multiband pass filter only has a minimal impact on color rendering. Therefore it is suitable for photographing objects that emit continuous light: not only emission nebulae, but also galaxies, star clusters, reflection nebulae, etc. You can achieve exposures up to 3 times longer than exposures without a filter.\u003c\/p\u003e\n\n\u003cp\u003e Features of the treatment:\u003c\/p\u003e\n\n\u003cp\u003e The treatments are not cemented onto the optical support, but spread by electron beam evaporation and subsequent ion beam-assisted deposition (IBAD process). This special process allows for extreme durability and scratch resistance, ensures central wavelength (CWL) stability and prevents thermal drift. Furthermore, it allows high transmission in the passband and high optical density in the blocked frequency range.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n \u003cp\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837352608,"sku":"ASF-59433-OPT006","price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59433_00.jpg?v=1773079873"},{"product_id":"optolong-filtro-clear-sky-77mm","title":"OPTOLONG CLEAR SKY FILTER 77MM","description":"\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e Filters with 77 mm filter thread for photographic lenses: especially suitable for increasing contrast in aurora - and deepsky photography!\u003c\/p\u003e\n\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e In nature and macro photography, red and brown tones (e.g. the colors of dusk, sunset, autumn leaves) are emphasized and better differentiated.\u003c\/p\u003e\n\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e Reduction of scattered light from street lights, for example blocking yellow light - a clear advantage that cannot be replaced by post-processing on the PC.\u003c\/p\u003e\n\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e Made of special optical glass with neodymium oxide ideal for wide-angle images of the Milky Way and starry sky with photographic lenses: unlike widely used interference filters (cls, uhc), this filter can be used in front of a wide-angle lens, what which is not possible with interference filters.\u003c\/p\u003e\n\n \u003cp class=\"p1\" data-mce-fragment=\"1\"\u003eSuch filters require vertical incident light and therefore must be mounted between the lens and the camera in a complex manner for wide-angle shots.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837516448,"sku":"ASF-67558","price":169.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/67558_00_5133eaac-628f-4837-925e-b11fa586fcb3.webp?v=1773079890"},{"product_id":"optolong-filtro-l-enhance-1-25","title":"OPTOLONG L-ENHANCE FILTER 1.25\"","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nL-ENHANCE DUAL BAND-PASS FILTER ENABLES FOG PHOTOGRAPHY WITH COLOR CAMERAS AND SIGNIFICANTLY REDUCES LIGHT POLLUTION.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE SPECTRAL LINES H-ALPHA, H-BETA AND O-III PASSED ALMOST UNHINDLED.\u003cbr\u003e\nAREAS OF LIGHT POLLUTION ARE BLOCKED SO DEEP SKY PHOTOGRAPHY IS POSSIBLE EVEN FROM THE CITY! \u003cbr\u003e\nTHE STUNNING COLORS OF THE MIST ARE PRESERVED IN THE BEST POSSIBLE WAY FOR A NATURAL IMPRESSION.\u003cbr\u003e\nTHE FILTER ALLOWS RECORDINGS NEAR THE QUALITY OF MONOCHROME CAMERAS WITH NARROWBAND FILTERS!\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837713056,"sku":"ASF-65041-L-eNhance-125","price":149.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/65041_00.jpg?v=1668624994"},{"product_id":"optolong-filtro-l-pro-2","title":"OPTOLONG L-PRO 2'' FILTER","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nOPTOLON FILTER\u003c\/p\u003e\n\n\n \u003cp\u003eTHIS FILTER IS DESIGNED TO IMPROVE THE CONTRAST OF DEEP-SKY OBJECTS AND DIMUTE THE BRIGHTNESS OF THE BACKGROUND SKY, THANKS TO A SOPHISTICATED TRANSMISSION THAT LETS THROUGH THE LIGHT OF THE LINES IN WHICH DEEP-SKY OBJECTS SHINE (H-ALPHA, O-III , N-II, H-BETA, S-II…), BUT BLOCKS THE EMISSIONS OF HARMFUL LIGHT (FOR EXAMPLE THE HG LINE, OR THE WAVELENGTHS OF SODIUM VAPOR LIGHTS). ALSO, IT REDUCES THE BACKGROUND BRIGHTNESS CAUSED BY THE OXYGEN IN THE ATMOSPHERE (“SKY GLOW”). THE USE OF THIS FILTER IS RECOMMENDED IN AREAS WITH LIGHT POLLUTION AND IS SUITABLE FOR BOTH VISUAL AND PHOTOGRAPHIC USE.\u003c\/p\u003e\n\n\n \u003cp\u003eCOMPARED TO OTHER FILTERS FOR THE REDUCTION OF THE EFFECTS OF LIGHT POLLUTION, SUCH AS FOR EXAMPLE UHC OR CLS FILTERS, THIS IS A MULTIBAND PASS-THROUGH FILTER IT HAS ONLY A MINIMUM EFFECT ON THE COLOR RENDERING. THEREFORE IT IS SUITABLE FOR PHOTOGRAPHING OBJECTS THAT EMIT CONTINUOUS LIGHT: NOT ONLY EMISSION NEBULAUSES, BUT ALSO GALAXIES, STAR CLUSTERS, REFLECTION NEBULAUSES ETC. YOU CAN ACHIEVE UP TO 3X LONGER EXPOSURES THAN WITH UNFILTERED POSTURES.\u003c\/p\u003e\n\n\n\u003cp\u003eTREATMENT CHARACTERISTICS:\u003c\/p\u003e\n\n\n \u003cp\u003eTHE TREATMENTS ARE NOT CEMENTED ON THE OPTICAL SUPPORT, BUT LAID BY EVAPORATION OF THE ELECTRON BEAM AND SUBSEQUENT DEPOSITION ASSISTED BY ION BEAM (IBAD PROCESS). THIS SPECIAL PROCESS ENABLES EXTREME DURABILITY AND SCRATCH RESISTANCE, ENSURES CENTER WAVELENGTH (CWL) STABILITY AND PREVENTS THERMAL DRIFT. FURTHERMORE, IT ALLOWES HIGH TRANSMISSION IN THE PASSBAND AND HIGH OPTICAL DENSITY IN THE BLOCKED FREQUENCY RANGE.\u003c\/p\u003e\n\n\n\u003cp\u003eATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837876896,"sku":"OP-LPRO-OPT007","price":192.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59435_00.jpg?v=1668624996"},{"product_id":"optolong-filtro-clear-sky-82mm","title":"OPTOLONG CLEAR SKY FILTER 82MM","description":"\u003cp\u003e The Optolong 82mm Clear Sky filter is used as an anti-pollution filter for 82mm diameter lenses, by applying the filter in front of your photographic lens it is possible to eliminate light pollution due to artificial light and at the same time it is suitable for highlighting nebulae to issue.\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003eIt is a broad spectrum filter, it lets almost all wavelengths pass 100% and only cuts the harmful ones.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003eBy applying the Clear Sky filter we will not introduce any color variations or shades in the final result of the images.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003eThe filter is only 1.0mm thick\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003e\u003cimg height=\"467\" width=\"467\" alt=\"\" src=\"https:\/\/www.artesky.it\/img\/cms\/optolong\/Clear-Sky.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch3\u003e \u003cspan\u003eCOMPATIBLE WITH BOTH CANON, NIKON AND OTHER BRANDS\u003c\/span\u003e\n\u003c\/h3\u003e\n\n \u003cp\u003e\u003cspan\u003eThe Clear Sky filter is compatible with photographic lenses of all brands, the important thing is to know the diameter of your lens, in this case it is possible to purchase photographic adapters for smaller lenses.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003e\u003cimg height=\"534\" width=\"534\" alt=\"\" src=\"https:\/\/www.artesky.it\/img\/cms\/optolong\/Optolong-77-mm-outer-light-pollution-filter-Clear-Sky-No-dark-corners-designed-lens-filters-jpg_640x640.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e \u003cspan\u003eUnlike narrower band filters it does not alter the colours; it is particularly suitable if used near cities, suburbs, towns or in the countryside.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003eThe filter is available in two sizes, one with a 77mm thread and one with an 82mm thread; however, thanks to the photographic filter adapters, it is possible to use the Clear Sky filter even with filters with smaller threads, for example 67mm!\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch3\u003e \u003cspan\u003eDIFFERENCES WITH AND WITHOUT CLEAR SKY OPTOLONG FILTER\u003c\/span\u003e\n\u003c\/h3\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan\u003e\u003cimg height=\"588\" width=\"750\" alt=\"\" src=\"https:\/\/www.artesky.it\/img\/cms\/optolong\/clear-sky-filter-2.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778837975200,"sku":"ASF-69501","price":221.88,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/69501_01.webp?v=1773079975"},{"product_id":"optolong-filtro-l-enhance-2","title":"OPTOLONG L-ENHANCE FILTER 2\"","description":"\u003cp\u003e PRODUCT DESCRIPTION \u003cbr\u003e\nL-ENHANCE DUAL BAND-PASS FILTER ENABLES FOG PHOTOGRAPHY WITH COLOR CAMERAS AND SIGNIFICANTLY REDUCES LIGHT POLLUTION.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE SPECTRAL LINES H-ALPHA, H-BETA AND O-III ARE PASSED ALMOST UNOBSTRUCTED.\u003cbr\u003e\nAREAS OF LIGHT POLLUTION ARE BLOCKED SO DEEP SKY PHOTOGRAPHY IS POSSIBLE EVEN FROM THE CITY!\u003cbr\u003e\nTHE STUNNING COLORS OF THE MIST ARE PRESERVED IN THE BEST POSSIBLE WAY FOR A NATURAL IMPRESSION.\u003cbr\u003e\nTHE FILTER ALLOWS RECORDINGS NEAR THE QUALITY OF MONOCHROME CAMERAS WITH NARROWBAND FILTERS!\u003c\/p\u003e\n\n\n\u003cp\u003eTHE SURFACE OF THE FILTER IS OPTICALLY POLISHED AND COATED SEVERAL TIMES. THE FILTER SUBSTRATE IS MADE OF OPTICAL GLASS FROM SCHOTT, GERMANY.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778838073504,"sku":"OP-63802-OPT065","price":239.42,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/63802_00.jpg?v=1773080018"},{"product_id":"optolong-clip-filter-l-pro-per-sony-full-frame","title":"OPTOLONG FILTER L-PRO CLIP SONY FULL FRAME","description":"\u003cp\u003e PRODUCT DESCRIPTION \u003cbr\u003e\nOPTOLON FILTER\u003c\/p\u003e\n\n\n\u003cp\u003eTHIS FILTER IS DESIGNED TO IMPROVE THE CONTRAST OF DEEP-SKY OBJECTS AND DIMUTE THE BRIGHTNESS OF THE BACKGROUND SKY, THANKS TO A SOPHISTICATED TRANSMISSION THAT LETS THROUGH THE LIGHT OF THE LINES IN WHICH DEEP-SKY OBJECTS SHINE (H-ALPHA, O-III , N-II, H-BETA, S-II…), BUT BLOCKS THE EMISSIONS OF HARMFUL LIGHT (FOR EXAMPLE THE HG LINE, OR THE WAVELENGTHS OF SODIUM VAPOR LIGHTS). ALSO, IT REDUCES THE BACKGROUND BRIGHTNESS CAUSED BY THE OXYGEN IN THE ATMOSPHERE (“SKY GLOW”). THE USE OF THIS FILTER IS RECOMMENDED IN AREAS WITH LIGHT POLLUTION AND IS SUITABLE FOR BOTH VISUAL AND PHOTOGRAPHIC USE.\u003c\/p\u003e\n\n\n \u003cp\u003eCOMPARED TO OTHER FILTERS FOR THE REDUCTION OF THE EFFECTS OF LIGHT POLLUTION, SUCH AS FOR EXAMPLE UHC OR CLS FILTERS, THIS IS A MULTIBAND PASS-THROUGH FILTER IT HAS ONLY A MINIMUM EFFECT ON THE COLOR RENDERING. THEREFORE IT IS SUITABLE FOR PHOTOGRAPHING OBJECTS THAT EMIT CONTINUOUS LIGHT: NOT ONLY EMISSION NEBULAUSES, BUT ALSO GALAXIES, STAR CLUSTERS, REFLECTION NEBULAUSES ETC. YOU CAN ACHIEVE UP TO 3X LONGER EXPOSURES THAN WITH UNFILTERED POSTURES.\u003c\/p\u003e\n\n\n\u003cp\u003eTREATMENT CHARACTERISTICS:\u003c\/p\u003e\n\n\n \u003cp\u003eTHE TREATMENTS ARE NOT CEMENTED ON THE OPTICAL SUPPORT, BUT LAID BY EVAPORATION OF THE ELECTRON BEAM AND SUBSEQUENT DEPOSITION ASSISTED BY ION BEAM (IBAD PROCESS). THIS SPECIAL PROCESS ENABLES EXTREME DURABILITY AND SCRATCH RESISTANCE, ENSURES CENTER WAVELENGTH (CWL) STABILITY AND PREVENTS THERMAL DRIFT. FURTHERMORE, IT ALLOWES HIGH TRANSMISSION IN THE PASSBAND AND HIGH OPTICAL DENSITY IN THE BLOCKED FREQUENCY RANGE.\u003c\/p\u003e\n\n\n\u003cp\u003eATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778838106272,"sku":"OP-71253-OPT012","price":259.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/71253_00.jpg?v=1668625002"},{"product_id":"optolong-filtro-l-pro-canon-eos-r-clip","title":"OPTOLONG L-PRO CANON EOS R CLIP FILTER","description":"\u003cp\u003e IN SUBURBAN AREAS WITH LOW LIGHT POLLUTION, THE COLOR BALANCE IS GOOD. MULTI-BAND PASS DESIGN GUARANTEES EXCELLENT COLOR RESTORATION.\u003c\/p\u003e\n\n\n \u003cp\u003eL-PRO IS A LOW COLOR GRADING FILTER, SPECIALLY DESIGNED FOR STARRY SKY PHOTOGRAPHY. THIS IS NOT POSSIBLE WITH OTHER LIGHT POLLUTION FILTERS!\u003c\/p\u003e\n\n\n \u003cp\u003eTHE OPTOLONG L-PRO (L-PROFESSIONAL) FILTER IS DESIGNED TO IMPROVE THE VISIBILITY OF VARIOUS DEEPSKY OBJECTS. SELECTIVELY REDUCING THE WAVELENGTH TRANSMISSION OF LIGHT POLLUTANTS, PARTICULARLY THOSE PRODUCED BY ARTIFICIAL LIGHTS INCLUDING MERCURY VAPOR LAMPS, HIGH AND LOW PRESSURE SODIUM VAPOR LIGHTS AND UNWANTED NATURAL LIGHT CAUSED BY THE EMISSION OF NEUTRAL OXYGEN IN OUR ATMOSPHERE (I.E. SKYGLOW). TOGETHER WITH THE HIGHLY CLEAR MAIN NEBULA EMISSION LINES AT OIII (496NM AND 500NM), H-BETA (486NM), NII (654NM AND 658NM), H-ALPHA (656NM) AND SII (672NM), THE FILTER IS SUITABLE FOR IMPROVING CONTRAST AND DETAILS FOR BOTH VISUAL AND PHOTOGRAPHIC PURPOSES IN SUB-RURAL AREAS WITH HEAVY LIGHT POLLUTION. \u003cbr\u003e\nUNLIKE OTHER UHC AND CLS LIGHT POLLUTION FILTERS, L-PRO IS A MULTIPLE BANDPASS FILTER THAT OFFERS BETTER COLOR BALANCE BY MAXIMIZING THE TRANSMISSION BANDWIDTH. BALANCED TRANSMISSION ENABLES ASTROPHOTOS WITH MINIMAL COLORS OF WIDEBAND EMISSION OBJECTS SUCH AS GALAXIES, REFLECTIVE NEBULA AND GLOBULAR STAR CLUSTERS. L-PRO IS THE BEST CHOICE FOR LIGHT POLLUTION SUPPRESSION.\u003c\/p\u003e\n\n\n\u003cp\u003eMAIN USE AND PERFORMANCE\u003c\/p\u003e\n\n\n\u003cp\u003eSUITABLE FOR VISUAL OBSERVATION AND ASTROPHOTOGRAPHY.\u003c\/p\u003e\n\n\n \u003cp\u003eTHE L-PRO FILTER HAS A VERY LOW TRANSMISSION REDUCTION RATE AGAINST CONTINUOUS SPECTRUM SPACE OBJECTS, AND IS THEREFORE VERY EFFECTIVE IN SUFFERING LIGHT POLLUTION SOURCES WHEN SHOOT GALAXIES, REFLECTION NEBULAUSES AND GLOBULAR STAR CLUSTERS. THE SAME GOES FOR VISUAL OBSERVATIONS OF THE STARS.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE L-PRO FILTER ALONE CAN SUPPRESS THE INFRARED WAVELENGTH AND THEREFORE CAN BE USED AT EASE FOR SHOOTING \"L\" IMAGES WITH A CCD. THE LIGHT POLLUTION FILTER DOES NOT ELIMINATE THE EFFECTS OF LIGHT POLLUTION OR INCREASE THE BRIGHTNESS OF THE OBJECT. IN MANY CASES, THEY INCREASE THE CONTRAST BETWEEN THE NEBULA AND THE NIGHT SKY, NOT BRIGHTENING THE NEBULA.\u003c\/p\u003e\n\n\n\u003cp\u003eCAMERAS AND LENSES COMPATIBLE WITH L-PRO EOS-R\u003c\/p\u003e\n\n\n\u003cp\u003eAPPLICABLE MACHINE BODY: \u003c\/p\u003e\n\n\n\u003cp\u003eEOS R\/RA, EOS RP, EOS R5, EOS R6\u003c\/p\u003e\n\n\n\u003cp\u003eAPPLICABLE LENSES:\u003c\/p\u003e\n\n\n\u003cp\u003eFULL RANGE OF MAIN AND RF AUXILIARY LENSES\u003cbr\u003e\nFULL RANGE OF EF MAIN AND AUXILIARY LENSES (ADAPTER REQUIRED)\u003cbr\u003e\nWARNING: OPTOLONG FILTERS ARE NOT DESIGNED FOR SUN OBSERVATION. DO NOT LOOK AT THE SUN WITH ANY OPTOLONG FILTER. YOU WOULD BE BLIND IF YOU DID NOT OBSERVE THE WARNING.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778838368416,"sku":"OP-71895-OPT011","price":259.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/71895_00.jpg?v=1773080052"},{"product_id":"optolong-filtro-l-enhance-aps-c-eos-clip","title":"OPTOLONG L-ENHANCE FILTER APS-C EOS CLIP","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nL-ENHANCE DUAL BANDPASS FILTER ENABLES FOG PHOTOGRAPHY WITH DLSR CAMERAS AND SIGNIFICANTLY REDUCES LIGHT POLLUTION.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE SPECTRAL LINES H-ALPHA, H-BETA AND O-III ARE PASSED ALMOST UNOBSTRUCTED. \u003cbr\u003e\nAREAS OF LIGHT POLLUTION ARE BLOCKED SO DEEP SKY PHOTOGRAPHY IS POSSIBLE EVEN FROM THE CITY!\u003cbr\u003e\nTHE STUNNING COLORS OF THE MIST ARE PRESERVED IN THE BEST POSSIBLE WAY FOR A NATURAL IMPRESSION.\u003cbr\u003e\nTHIS CLIP FILTER IS SUITABLE FOR CANON EOS MODELS 7D2, 80D, 800D, 77D, 70D, 760D, 750D, 700D, 650D, 600D, 60D, 60DA, 550D, 500D, 400D, 100D, 1100D, 1200D, 1200D, 1300D, 1300D WITH APS SENSORS -C.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE FILTER ALLOWS RECORDINGS NEAR THE QUALITY OF MONOCHROME CAMERAS WITH NARROWBAND FILTERS!\u003c\/p\u003e\n\n\n\u003cp\u003eTHE SURFACE OF THE FILTER IS OPTICALLY POLISHED AND COATED SEVERAL TIMES. THE FILTER SUBSTRATE IS MADE OF OPTICAL GLASS FROM SCHOTT, GERMANY.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778838499488,"sku":"ASF-67305-OPT066","price":255.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67305_00.jpg?v=1773080069"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-ff-l-pro","title":"OPTOLONG CLIP FILTER FOR CANON EOS FF L-PRO","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eOptolong filter\u003c\/b\u003e\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThis filter is designed to improve the contrast of deep-sky objects and attenuate the brightness of the sky in the background, thanks to a sophisticated transmission that allows the light of the lines in which the deep-sky objects shine (H-alpha, O-III , N-II, H-Beta, S-II…), but blocks harmful light emissions (for example the Hg line, or the wavelengths of sodium vapor lighting). It also reduces the background brightness caused by the oxygen in the atmosphere (“sky glow”). The use of this filter is recommended in areas with light pollution and is suitable for both visual and photographic use.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eCompared to other filters for reducing the effects of light pollution, such as UHC or CLS filters, this multiband pass filter only has a minimal impact on color rendering. Therefore it is suitable for photographing objects that emit continuous light: not only emission nebulae, but also galaxies, star clusters, reflection nebulae, etc. You can achieve exposures up to 3 times longer than exposures without a filter.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Features of the treatment:\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The treatments are not cemented onto the optical support, but spread by electron beam evaporation and subsequent ion beam-assisted deposition (IBAD process). This special process allows for extreme durability and scratch resistance, ensures central wavelength (CWL) stability and prevents thermal drift. Furthermore, it allows high transmission in the passband and high optical density in the blocked frequency range.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e with frame for mounting on Canon EOS cameras with full-frame sensor\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3 data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003eAttention: the filter can be used with EOS 6D, EOS 5D, EOS 5D II and EOS 5D III!\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The new models (EOS 6D II, EOS 5D IV)\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cb data-mce-fragment=\"1\"\u003eNot\u003c\/b\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eallow the use of this filter! The filter prevents the usual movement of the flip mirror when capturing images. With EOS 6D II and EOS 5D IV this leads to an anomaly in the operation of the camera.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778838597792,"sku":"OP-59446-OPT009","price":249.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59446_00.jpg?v=1773080087"},{"product_id":"optolong-filtro-uhc-filter-1-25","title":"OPTOLONG UHC FILTER 1.25","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nUHC FILTER SUPPRESSES SKY BACKGROUND BRIGHTNESS CAUSED BY ARTIFICIAL LIGHT. ON THE CONTRARY, WAVELENGTHS PREFERABLY EMITTED BY FOG-LIKE CELESTIAL OBJECTS ARE LEFT THROUGH.\u003c\/p\u003e\n\n\n \u003cp\u003eTHE EFFECT FOR THE OBSERVER IS A SIGNIFICANT INCREASE OF CONTRAST. THE USE OF THE UHC FILTER IS NOT ONLY USEFUL IN LIGHT POLLUTED AREAS. THE CONTRAST IS INCREASED EVEN UNDER THE DARK SKY.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778838663328,"sku":"ASF-67543-OPT001","price":100.83,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67543_00.jpg?v=1773080104"},{"product_id":"optolong-clip-filter-per-canon-eos-aps-c-uhc","title":"OPTOLONG CLIP FILTER FOR CANON EOS APS-C UHC","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThe UHC (Ultra High Contrast) broadband filter was designed to improve the visibility of various deep-sky objects.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This is achieved in part by reducing the transmission of light pollution wavelengths, particularly those resulting from artificial lighting including mercury vapor lamps. But also by blocking the emissions of sodium vapor lamps and the harmful sky glow effect. Together with the highly transparent transmission lines OIII (496 nm and 500 nm), H-beta (486 nm), NII (654 nm and 658 nm), H-alpha (656 nm) and SII (672 nm) this filter is perfect for improving contrast and details for visual and photographic uses, in areas with strong light pollution.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003ePerformance and main uses\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Suitable for unmodified color CCD and DSLR cameras\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003eThe UHC filter with reduced width of the bandpass range offers greater contrast than the CLS and is therefore more suitable for the city environment, subject to greater air pollution.\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e The UHC filter has a notable bandpass range in the red and therefore allows exceptional photographic recordings of objects such as the Orion Nebula (M42)\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Light pollution filters do not increase the brightness of objects and cannot exclusively eliminate the effects of light pollution. In many cases, however, they increase the contrast between the nebula and the night sky.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Quality materials:\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e German made branded glass substrate, 1.0mm thickness\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Multi-layer anti-reflection coating, deposited via electron beam evaporation and ion beam assisted deposition\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Quality finish:\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Precision optically polished substrate up to 1\/4 lambda and \u0026lt;30 arcseconds of parallelism on both sides\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Polish quality 60\/40 according to MIL-O-13830 specifications\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003eUniform and precise coating method ensuring high passband transmission and precise off-band blocking\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839318688,"sku":"OP-59441-OPT003","price":99.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59441_00.jpg?v=1773080123"},{"product_id":"optolong-filtro-uhc-filter-2","title":"OPTOLONG UHC FILTER, 2\"","description":"\u003cp\u003e PRODUCT DESCRIPTION \u003cbr\u003e\nUHC FILTER SUPPRESSES SKY BACKGROUND BRIGHTNESS CAUSED BY ARTIFICIAL LIGHT. ON THE CONTRARY, WAVELENGTHS PREFERABLY EMITTED BY FOG-LIKE CELESTIAL OBJECTS ARE LEFT THROUGH.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE EFFECT FOR THE OBSERVER IS A SIGNIFICANT INCREASE OF CONTRAST. THE USE OF THE UHC FILTER IS NOT ONLY USEFUL IN LIGHT POLLUTED AREAS. THE CONTRAST IS INCREASED EVEN UNDER THE DARK SKY.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839384224,"sku":"OP-67547-OPT002","price":85.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67547_00.jpg?v=1668625013"},{"product_id":"optolong-clip-filter-per-canon-eos-ff-uhc","title":"OPTOLONG CLIP FILTER FOR CANON EOS FF UHC","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The UHC (Ultra High Contrast) broadband filter was designed to improve the visibility of various deep-sky objects.\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThis is achieved in part by reducing the transmission of light pollution wavelengths, particularly those resulting from artificial lighting including mercury vapor lamps. But also by blocking the emissions of sodium vapor lamps and the harmful sky glow effect. Together with the highly transparent transmission lines OIII (496 nm and 500 nm), H-beta (486 nm), NII (654 nm and 658 nm), H-alpha (656 nm) and SII (672 nm) this filter is perfect for improving contrast and details for visual and photographic uses, in areas with strong light pollution.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e with frame for mounting on Canon EOS cameras with full-frame sensor\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eAttention: the filter can be used with EOS 6D, EOS 5D, EOS 5D II and EOS 5D III!\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThe new models (EOS 6D II, EOS 5D IV)\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cb data-mce-fragment=\"1\"\u003eNot\u003c\/b\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eallow the use of this filter! The filter prevents the usual movement of the flip mirror when capturing images. With EOS 6D II and EOS 5D IV this leads to an anomaly in the operation of the camera.\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003ePerformance and main uses\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Suitable for unmodified color CCD and DSLR cameras\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e The UHC filter with reduced width of the bandpass range offers greater contrast than the CLS and is therefore more suitable for the city environment, subject to greater air pollution.\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e The UHC filter has a notable bandpass range in the red and therefore allows exceptional photographic recordings of objects such as the Orion Nebula (M42)\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003eLight pollution filters do not increase the brightness of objects and cannot exclusively eliminate the effects of light pollution. In many cases, however, they increase the contrast between the nebula and the night sky.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Quality materials:\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e German made branded glass substrate, 1.0mm thickness\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Multi-layer anti-reflection coating, deposited via electron beam evaporation and ion beam assisted deposition\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e Quality finish:\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Precision optically polished substrate up to 1\/4 lambda and \u0026lt;30 arcseconds of parallelism on both sides\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Polish quality 60\/40 according to MIL-O-13830 specifications\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Uniform and precise coating method ensuring high passband transmission and precise off-band blocking\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839449760,"sku":"ASF-59448-OPT004","price":119.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59448_00.jpg?v=1773080156"},{"product_id":"optolong-clip-filter-per-nikon-full-frame-uhc","title":"OPTOLONG CLIP FILTER FOR NIKON FULL FRAME UHC","description":"\u003cp\u003e PRODUCT DESCRIPTION\u003cbr\u003e\nTHE UHC (ULTRA HIGH CONTRAST) BROADBAND FILTER HAS BEEN DESIGNED TO IMPROVE THE VISIBILITY OF VARIOUS DEEP-SKY OBJECTS.\u003c\/p\u003e\n\n\n \u003cp\u003eTHIS IS ACHIEVED IN PART BY REDUCING THE TRANSMISSION OF LIGHT POLLUTION WAVELENGTHS, PARTICULARLY THOSE ARISING FROM ARTIFICIAL LIGHTING INCLUDING MERCURY VAPOR LAMPS. BUT ALSO THROUGH THE BLOCKING OF THE EMISSION OF SODIUM VAPOR LAMPS AND THE HARMFUL SKY GLOW EFFECT. TOGETHER WITH THE HIGHLY CLEAR TRANSMISSION LINES OIII (496 NM \u0026amp; 500 NM), H-BETA (486 NM), NII (654 NM \u0026amp; 658 NM), H-ALFA (656 NM) AND SII (672 NM) THIS FILTER IS PERFECT FOR THE IMPROVEMENT OF CONTRAST AND DETAILS FOR VISUAL AND PHOTOGRAPHIC USE, IN AREAS WITH STRONG LIGHT POLLUTION.\u003c\/p\u003e\n\n\n\u003cp\u003eWITH FRAME FOR ASSEMBLY ON NIKON CAMERAS\u003cbr\u003e\nATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!\u003c\/p\u003e\n\n\n\u003cp\u003eTHIS ITEM IS NOT AVAILABLE TO CUSTOMERS IN GERMANY.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839580832,"sku":"ASF-59455-OPT005","price":129.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/59455_01.jpg?v=1773080175"},{"product_id":"optolong-filtro-l-extreme-1-25","title":"OPTOLONG L-EXTREME FILTER 1.25\"","description":"\u003cp\u003e PRODUCT DESCRIPTION \u003cbr\u003e\nTHE OPTOLONG L-EXTREME IS A DUAL-BANDWIDTH 7NM FILTER THAT CAN BE USED WITH COLOR SINGLE-SHOT CAMERAS SUCH AS DSLRs (DIGITAL SINGLE-LENS REFLEX CAMERAS) AND MONOCHROME CCD CAMERAS. IT IS ALSO SUITABLE FOR \"FAST\" OPTICAL SYSTEMS. THE NATURE OF THIS FILTER MAKES IT POSSIBLE TO PHOTOGRAPH EMISSION NEBULAE EVEN IN SKIES WITH STRONG LIGHT POLLUTION. OPTPLONG BELIEVES THAT THE L-EXTREME FILTER DESIGN WOULD BE A BETTER CHOICE FOR FAST, COMPETITIVELY PRICED SYSTEMS. THE OPTOLONG L-EXTREME FILTER ISOLATES THE EMISSION LINES OF THE H-ALPHA AND OIII NEBULAS BY MAXIMIZING THE CONTRAST AND SENSOR-TO-NOISE RATIO BETWEEN NEBULAS.FOR PEOPLE WHO LIVE IN VERY LIGHT-POLLUTED AREAS OR WHO WANT TO TAKE PHOTOS ' LA LUNA, L-EXTREME IS AN EXCELLENT FILTER.\u003c\/p\u003e\n\n\n \u003cp\u003eUNLIKE THE L-ENHANCE FILTER WHICH IS A THREE-BAND FILTER (IT TRANSMITS HB, HA AND OIII), THE L-EXTREME FILTER IS A DOUBLE-BAND FILTER WHICH ALLOWES H-ALPHA AND OIII EMISSION LINES TO PASS.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839613600,"sku":"ASF-67553-OPT071","price":219.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67553_00.jpg?v=1668625018"},{"product_id":"optolong-filtro-l-extreme-2","title":"OPTOLONG FILTER L-EXTREME 2\"","description":"\u003cp\u003eThe Optolong L-eXtreme is a 7nm dual-bandpass filter that can be used with single-shot color cameras, such as DSLRs (digital single lens reflex cameras) and monochrome CCD cameras. It is also suitable for \"fast\" optical systems. The nature of this filter makes it possible to photograph emission nebulae even in skies with heavy light pollution. Optplong believes the L-eXtreme filter design would be a better choice for fast, competitively priced systems. The Optolong L-eXtreme filter isolates the emission lines of H-Alpha and OIII nebulae maximizing the contrast and signal-to-noise ratio between nebulae. ' the moon, the L-eXtreme is a great filter.\u003c\/p\u003e\n\n \u003cp\u003eUnlike the L-eNhance filter, which is a three-band filter (transmits Hb, Ha and OIII), the L-eXtreme filter is a dual-band filter that allows the H-Alpha and OIII emission lines to pass.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839679136,"sku":"OP-L-EXTREME-2-OPT069","price":339.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/L-eXtreme_2_00.webp?v=1773080263"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-aps-c-h-alpha","title":"OPTOLONG CLIP FILTER FOR CANON EOS APS-C H-ALPHA","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e H-alpha is a common narrow band filter, with a narrow passing range in the red wavelength at 656 nm. It lets only small parts of oxygen emissions pass through and blocks unwanted wavelengths. It allows you to discover unimaginable details of hydrogen nebulae.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e H-alpha clip filter with 7nm bandwidth\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Capture fantastic details and increase the contrast of nebulae that would otherwise be unphotographable\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Blocks harmful artificial light\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Can also be used in light polluted conditions\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e\n\n\u003ch2 class=\"ipsType_sectionHead ipsSpacer_top\" _msthash=\"0\" _msttexthash=\"6118398\"\u003e Information on\u003cspan\u003e \u003c\/span\u003e\u003cem _istranslated=\"1\"\u003eOptolong H-Alpha 7nm Filter - Clip-on filter for Canon EOS APS-C cameras [OPTO-APS-EOS-C-HA7NM]\u003c\/em\u003e \n\n\u003c\/h2\u003e\n\n\u003cdiv data-controller=\"core.front.core.lightboxedImages\" class=\"ipsType_richText ipsType_normal ipsType_break ipsContained ipsSpacer_top\"\u003e\n\n \u003cp\u003e\u003cspan _msthash=\"1\" _msttexthash=\"212601610\" _mstmutation=\"1\"\u003eOptolong:\u003cspan\u003e \u003c\/span\u003e\u003cspan _istranslated=\"1\" _mstmutation=\"1\"\u003eThe Optolong H-Alpha 7nm is a very narrow emission line filter that works by allowing a 7nm bandwidth of light, focused on the 656nm wavelength and blocking the transmission of light pollution wavelengths that they kill the contrast. The wavelengths that are responsible for natural light pollution, or sky glow, have radically declined, as has artificial light pollution caused by high- and low-pressure sodium and mercury vapor lights. The result is a high-contrast image that reveals the H-alpha line in all its brilliance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n \u003cp\u003e\u003cspan _msthash=\"2\" _msttexthash=\"107134950\"\u003eThis Optolong H-Alpha EOS APS Clip filter will provide a well-defined contrast between the parachute and H-alpha transmitting objects, but because it has a FWHM of only 7nm, you won't see the same number of stars in the final image as you would with the H-Alpha Optolong 12nm filter. Use this filter alone for CCD or DSLR imaging, or use in conjunction with the OIII 6.5nm and SII 6.5nm filters to obtain a tricolor image of vaporous nebulae from light-polluted areas.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cspan _msthash=\"3\" _msttexthash=\"66414803\"\u003eThe Optolong EOS APS H-Alpha 7nm filter is made with Schott glass that has been multi-layered with ion-assisted deposition technology to ensure scratch resistance and core wavelength strength, or CWL. The filter cell is made of light and resistant metal and is CNC machined, sandblasted, black anodized and finally laser engraved.\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839744672,"sku":"ASF-59444","price":229.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/files\/59444_00.png?v=1732639631"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-ff-h-alpha","title":"OPTOLONG CLIP FILTER FOR CANON EOS FF H-ALPHA ","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cdiv id=\"description\" class=\"cnt-text-box\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv class=\"text-justify\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eH-alpha is a common narrow band filter, with a narrow passing range in the red wavelength at 656 nm. It lets only small parts of oxygen emissions pass through and blocks unwanted wavelengths. It allows you to discover unimaginable details of hydrogen nebulae.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e with frame for mounting on Canon EOS cameras with full-frame sensor\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2 data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\"\u003eAttention: the filter can be used with EOS 6D, EOS 5D, EOS 5D II and EOS 5D III!\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h2\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e The new models (EOS 6D II, EOS 5D IV)\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cb data-mce-fragment=\"1\"\u003eNot\u003c\/b\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eallow the use of this filter! The filter prevents the usual movement of the flip mirror when capturing images. With EOS 6D II and EOS 5D IV this leads to an anomaly in the operation of the camera.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e H-alpha clip filter with 7nm bandwidth\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003eCapture fantastic details and increase the contrast of nebulae that would otherwise be unphotographable\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Blocks harmful artificial light\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Can also be used in light polluted conditions\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839875744,"sku":"ASF-59452","price":248.18,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59452_00.jpg?v=1773080346"},{"product_id":"optolong-filtro-sii-filter-1-25","title":"OPTOLONG FILTER SII FILTER 1.25\"","description":"\u003cp\u003e SPECIFICATIONS \u003cbr\u003e\nPERFORMANCE\u003cbr\u003e\nCONNECTION (EYE SIDE)1.25\"\u003cbr\u003e\nCHASSIS\u003cbr\u003e\n1.25\"\u003cbr\u003e\nFRAME MATERIAL ALUMINUM\u003cbr\u003e\nOPTIC COATING\u003cbr\u003e\nMULTIPLE\u003cbr\u003e\nGENERAL\u003cbr\u003e\nMANUFACTURING TECHNIQUELINEAR FILTER\u003cbr\u003e\nFILTERTYPE\u003cbr\u003e\nFIELDS OF USE\u003cbr\u003e\nUSEFUL FOR PHOTOGRAPHY\u003cbr\u003e\nANTI-POLLUTION LIGHT\u003cbr\u003e\nNEBULAE AND GALAXIES\u003cbr\u003e\nPLANETARY NEBULAE\u003cbr\u003e\nREMAINS OF SUPERNOVASI\u003cbr\u003e\nUSABLE FOR VISUAL OBSERVATIONS\u003cbr\u003e\nEMISSION NEBULAUSE\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778839941280,"sku":"ASF-67556-OPT030","price":99.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67556_00.jpg?v=1668625029"},{"product_id":"optolong-filtro-sii-filter-2","title":"OPTOLONG FILTER SII FILTER 2","description":"\u003cp\u003e SPECIFICATIONS \u003cbr\u003e\nPERFORMANCE\u003cbr\u003e\nCONNECTION (EYE SIDE)2\"\u003cbr\u003e\nCHASSIS\u003cbr\u003e\n2\"\u003cbr\u003e\nFRAME MATERIAL ALUMINUM\u003cbr\u003e\nOPTIC COATING\u003cbr\u003e\nMULTIPLE\u003cbr\u003e\nGENERAL\u003cbr\u003e\nMANUFACTURING TECHNIQUELINEAR FILTER\u003cbr\u003e\nFILTERTYPE\u003cbr\u003e\nMATERIALALUMINIUM\u003cbr\u003e\nFIELDS OF USE\u003cbr\u003e\nUSEFUL FOR PHOTOGRAPHY\u003cbr\u003e\nNEBULAE AND GALAXIES\u003cbr\u003e\nPLANETARY NEBULAE\u003cbr\u003e\nREMAINS OF SUPERNOVASI\u003cbr\u003e\nUSABLE FOR VISUAL OBSERVATIONS\u003cbr\u003e\nEMISSION NEBULAUSE\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778840072352,"sku":"ASF-67555-OPT031","price":229.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67555_00.jpg?v=1668625031"},{"product_id":"optolong-filtro-sho-filter-kit-1-25","title":"OPTOLONG SHO FILTER KIT 1.25\"","description":"\u003cp\u003eNarrow band filters\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eincrease the contrast\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eletting pass only a certain range of wavelengths of light corresponding to certain spectral lines, for example hydrogen (Ha, 656nm), oxygen (OIII, 501nm), sulfur (SII, 672nm) etc. Filters can always be used for photography, even when you see the Moon, or as a filter\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eagainst pollution\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003ebright in the city. The duration of the exposure time is not important: long exposure photographs can also be taken.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eOIII Filter\u003c\/b\u003e : The narrow-band nebular filter lets light at 500 nanometers through. It is the line of twice ionized oxygen. Planetary nebulae and supernova remnants are of this color.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eH-alpha filter\u003c\/b\u003e : This narrow-band nebular filter passes red light with a length of 656 nanometers. It is the line where the HII zones (hydrogen nebulae) shine.\u003c\/p\u003e\n\n \u003cp\u003e\u003cb\u003eSII filter\u003c\/b\u003e : The narrow-band filter lets light from ionized sulfur atoms pass at 672 nanometers. It is the line where many planetary nebulae, emission nebulae, and supernova remnants shine.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778840137888,"sku":"ASF-67528","price":433.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67528_00.jpg?v=1773080393"},{"product_id":"optolong-kit-filtri-2-oiii-h-alfa-sii","title":"OPTOLONG SHO FILTER KIT 2\"","description":"\u003cp\u003e Narrow band filters\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eincrease the contrast\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eletting pass only a certain range of wavelengths of light corresponding to certain spectral lines, for example hydrogen (Ha, 656nm), oxygen (OIII, 501nm), sulfur (SII, 672nm) etc. Filters can always be used for photography, even when you see the Moon, or as a filter\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eagainst pollution\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003ebright in the city. The duration of the exposure time is not important: long exposure photographs can also be taken.\u003c\/p\u003e\n\n \u003cp\u003e\u003cb\u003eOIII Filter\u003c\/b\u003e : The narrow-band nebular filter lets light at 500 nanometers through. It is the line of twice ionized oxygen. Planetary nebulae and supernova remnants are of this color.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eH-alpha filter\u003c\/b\u003e : This narrow-band nebular filter passes red light with a length of 656 nanometers. It is the line where the HII zones (hydrogen nebulae) shine.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eSII filter\u003c\/b\u003e : The narrow-band filter lets light from ionized sulfur atoms pass at 672 nanometers. It is the line where many planetary nebulae, emission nebulae, and supernova remnants shine.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778840203424,"sku":"ASF-67530","price":716.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/67530_00.jpg?v=1773080411"},{"product_id":"optolong-filtro-clip-filter-per-canon-eos-aps-c-owb","title":"OPTOLONG CLIP FILTER FOR CANON EOS APS-C OWB","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n \u003cp data-mce-fragment=\"1\"\u003eThis OWB filter is suitable for your Canon EOS with APS-C sensor; Transforms your camera modified for astronomical use into a normal camera for daytime photography. Apply the filter via clip system to obtain white balance again and have natural images as if you were observing with the naked eye. Do you want to dedicate yourself to astrophotography again? Just change the filter and choose from the nebular ones suitable for the purpose. This way you can use your room both day and night.\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Resets the white balance in your camera modified for astrophotography uses\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e Allows you to use the camera for daytime photography again\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e All objects appear as natural as when observed with the naked eye\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e \u003cb data-mce-fragment=\"1\"\u003eAttention, this filter must never be used alone for observing the Sun!\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e This item is not available for customers in Germany.\u003c\/p\u003e","brand":"OPTOLONG","offers":[{"title":"Default Title","offer_id":42778840301728,"sku":"ASF-59445","price":99.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/59445_00.jpg?v=1773080429"},{"product_id":"zwo-filtro-asi-d25-clear-glass-filter","title":"ZWO ASI D25 CLEAR GLASS FILTER","description":"\u003cp\u003e THIS FILTER PROTECTS YOUR ROOM SENSOR FROM DUST AND MOISTURE. PERFECT IF YOU USE A REFLECTOR. BUT IF YOU ARE PHOTOGRAPHING WITH A REFRACTOR, AN IR-CUT FILTER MAY BE THE BEST CHOICE.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778878836896,"sku":"ZW-51300-ZWO-D25AR","price":30.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/51300.jpg?v=1773084073"},{"product_id":"zwo-filtro-asi-ar-protect-window-d21","title":"ZWO ASI AR PROTECT WINDOW FILTER D21","description":"\u003cp\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThis filter protects your camera sensor from dust and moisture. Perfect if you use a reflector. However, if you photograph with a refractor, an IR-cut filter may be the best choice.\u003c\/span\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778879295648,"sku":"ZW-51298-ZWO-D21AR","price":25.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/51298.jpg?v=1773084090"},{"product_id":"zwo-filtri-set-l-rgb-per-camera-asi1600mm-mono-1-25","title":"ZWO FILTERS SET L-RGB FOR CAMERA ASI1600MM MONO 1.25\"","description":"\u003cp\u003e The LRGB filter set is optimized for\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.astroshop.it\/telecamere-astronomiche\/zwo-fotocamera-asi-1600-mm-cool-v3-mono\/p,50241\"\u003eZWO ASI 1600 MM-Cool V3 Mono Camera\u003c\/a\u003e ; this means that the color balance is determined by the camera sensor.\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e The set includes, in addition to the red, green and blue filter, also a UV\/IR blocking filter. The filters are parfocal.\u003c\/li\u003e\n\n\u003cli\u003e The external surfaces are multi-treated for a transmission of over 92%.\u003c\/li\u003e\n\n\u003cli\u003e These are real interference filters and not simple colored filters.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n \u003cp\u003eThis filter set is perfect for deep-sky astrophotography in combination with the ASI 1600 MM Mono cooled camera! Even with the uncooled version of the camera you will still get exceptional planetary images!\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778879361184,"sku":"ZW-ZWO-LRGB1.25NEW-53522","price":179.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/53522.jpg?v=1773084107"},{"product_id":"zwo-filters-lrgb-filter-36mm-unmounted","title":"Filtri LRGB 36mm","description":"\u003cp\u003eTHIS FILTER SET IS AN AFFORDABLE ALTERNATIVE TO MOST OF THE MUCH MORE EXPENSIVE SETS FROM OTHER MANUFACTURERS. DESPITE THE ADVANTAGEOUS PRICE, IT IS AN INTERFERENTIAL FILTER WITH MULTILAYER ANTI-REFLECTIVE TREATMENT.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE SET IS OPTIMIZED FOR USE WITH ASI CAMERAS FROM ZW OPTICAL. ON YOUR COMPUTER, YOU WILL BE ABLE TO CREATE COLORFUL IMAGES THANKS TO THE COMBINATION OF THE PICTURES OBTAINED WITH THE THREE COLOR FILTERS AND THE LUMINANCE FILTER (IR BLOCK FILTER). THIS METHOD, UNLIKE A COLOR CAMERA, ALLOWS YOU TO EXPLOIT THE SENSOR'S FULL RESOLUTION IN EVERY COLOR RANGE - JUST LIKE THE PROS!\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778879787168,"sku":"ZW-ZWO-LRGB36-56438","price":269.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/56438.jpg?v=1773084140"},{"product_id":"zwo-set-filtri-l-rgb-2","title":"ZWO FILTERS LRGB 2 \"FILTER SET","description":"\u003cp\u003e THE ZWO 2\" L-RGB FILTER SET IS OPTIMIZED FOR ASTRO IMAGING WITH MONOCHROME CAMERAS\u003c\/p\u003e\n\n\n\u003cp\u003e2\" FILTER SET, CONSISTING OF FOUR FILTERS - RED, GREEN, BLUE AND UV\/IR CUT\u003cbr\u003e\nCOATED SURFACES AGAINST REFLEXIONS AND GHOSTING \u003cbr\u003e\nVERY GOOD TRANSMISSION FOR SHORTEST POSSIBLE EXPOSURE TIMES\u003cbr\u003e\nHIGH QUALITY MULTI-COATED INTERFERENCE FILTERS - NO SIMPLE COLOR FILTERS\u003cbr\u003e\nFINE OPTICAL POLISHED\u003cbr\u003e\nIR CUT OFF\u003cbr\u003e\nGAP IN THE RANGE OF THE SODIUM D LINES\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778879885472,"sku":"ZW-ZWO-LRGB2-65286","price":429.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/65286.jpg?v=1773084161"},{"product_id":"zwo-filtro-duo-band-1-25","title":"ZWO DUO-BAND FILTER 1.25\"","description":"\u003cp\u003e ZWO DUO-BAND FILTER IS A DUAL NARROWBAND FILTER PRIMARILY AIMED AT COMPLEMENTING THE COLOR RANGE OF ASI CAMERAS. THE DUO-BAND FILTER IS AIMED AT THE ASTRONOMER WHO MAY ALREADY OWN COLOR CAMERA AND WANTS TO IMAGE USING NARROWBAND TECHNIQUES OR EMISSION OBJECTS WITHOUT PURCHASING A MONO CAMERA, FILTER WHEEL AND NARROWBAND FILTER SET.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE DUO-BAND FILTER OFFERS AN ECONOMICAL ENTRY INTO THE WORLD OF NARROWBAND IMAGING AND CAN ALSO OFFER A PRACTICAL SOLUTION TO IMAGING IN LIGHT POLLUTED URBAN AREAS.\u003c\/p\u003e\n\n\n \u003cp\u003eTHE DUAL BAND PASS NATURE OF THE DUO-BAND FILTER PASSES LIGHT AT HΑ (656NM) AND OIII (500NM) WAVELENGTH, AND CAN REDUCE THE INTERFERENCE FROM NATURAL LIGHT SOURCES SUCH AS MOONLIGHT, OR ARTIFICIAL LIGHT POLLUTION SUCH AS STREET LIGHTING. IT CAN HELP IMPROVE THE CONTRAST AND VISIBILITY OF DEEP SKY OBJECTS SUCH AS EMISSION NEBULA USING A COLOR CAMERA.\u003c\/p\u003e\n\n\n\u003cp\u003eBANDWIDTH: HA (15NM) OIII (35NM)\u003cbr\u003e\nMORE THAN 90% TRANSMISSION AT MAJOR OIII LINE 486.NM, 496NM AND 501NM.\u003cbr\u003e\nMORE THAN 80% TRANSMISSION AT HA LINE 656.3NM\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778880540832,"sku":"ZW-ZWO-DB1.25-63984","price":115.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/63984.jpg?v=1773084178"},{"product_id":"zwo-filtro-duo-band-2","title":"ZWO DUO-BAND FILTER 2\"","description":"\u003cp\u003e ZWO DUO-BAND FILTER IS A DUAL NARROWBAND FILTER PRIMARILY AIMED AT COMPLEMENTING THE COLOR RANGE OF ASI CAMERAS. THE DUO-BAND FILTER IS AIMED AT THE ASTRONOMER WHO MAY ALREADY OWN COLOR CAMERA AND WANTS TO IMAGE USING NARROWBAND TECHNIQUES OR EMISSION OBJECTS WITHOUT PURCHASING A MONO CAMERA, FILTER WHEEL AND NARROWBAND FILTER SET. \u003c\/p\u003e\n\n\n\u003cp\u003eTHE DUO-BAND FILTER OFFERS AN ECONOMICAL ENTRY INTO THE WORLD OF NARROWBAND IMAGING AND CAN ALSO OFFER A PRACTICAL SOLUTION TO IMAGING IN LIGHT POLLUTED URBAN AREAS.\u003c\/p\u003e\n\n\n\u003cp\u003eTHE DUAL BAND PASS NATURE OF THE DUO-BAND FILTER PASSES LIGHT AT HΑ (656NM) AND OIII (500NM) WAVELENGTH, AND CAN REDUCE THE INTERFERENCE FROM NATURAL LIGHT SOURCES SUCH AS MOONLIGHT, OR ARTIFICIAL LIGHT POLLUTION SUCH AS STREET LIGHTING. IT CAN HELP IMPROVE THE CONTRAST AND VISIBILITY OF DEEP SKY OBJECTS SUCH AS EMISSION NEBULA USING A COLOR CAMERA.\u003c\/p\u003e\n\n\n\u003cp\u003eBANDWIDTH: HA (15NM) OIII (35NM)\u003cbr\u003e\nMORE THAN 90% TRANSMISSION AT MAJOR OIII LINE 486.NM, 496NM AND 501NM.\u003cbr\u003e\nMORE THAN 80% TRANSMISSION AT HA LINE 656.3NM\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778881327264,"sku":"ZW-ZWO-DB2-63985","price":259.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/63985_00.jpg?v=1773084195"},{"product_id":"zwo-filtro-filter-ch4-1-25","title":"ZWO FILTER CH4 1.25\"","description":"\u003cp\u003e THIS INTERFERENCE FILTER CAN BE USED IN PLANETARY PHOTOGRAPHY WITH INFRARED SENSITIVE ROOMS. DUE TO ITS NARROW WIDTH AT MID-HEIGHT AND POSITION OF THE PASSBAND, IT CANNOT BE USED FOR VISUAL OBSERVATION.\u003c\/p\u003e\n\n\n\u003cp\u003eIN THE NARROW BAND OF METHANE MOLECULES, SPECTACULAR IMAGES OF GAS GIANTS, SUCH AS JUPITER AND SATURN, ARE OBTAINED!\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778881753248,"sku":"ZW-ZWO-CH4-48574","price":129.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/48574.jpg?v=1773084231"},{"product_id":"zwo-filtro-1-25-set-filtri-h-alpha-sii-oiii","title":"ZWO FILTER 1.25\" FILTER SET: H-ALPHA, SII, OIII","description":"\u003cp\u003e THE THREE NARROWBAND FILTERS ARE PERFECT FOR PHOTOGRAPHING FAMOUS NEBULA. ALSO, THEY REDUCE THE EFFECTS OF LIGHT POLLUTION. \u003c\/p\u003e\n\n\n\u003cp\u003eTHE FILTERS ARE HOMOFOCAL WITH ZWO'S L-RGB FILTER SET AND THEREFORE CAN BE PERFECTLY COMBINED.\u003c\/p\u003e\n\n\n\u003cp\u003eH-ALPHA FILTER: THIS NARROW-BAND NEBULAR FILTER PASSES RED LIGHT WITH A LENGTH OF 656 NANOMETERS. IT IS THE LINE IN WHICH THE HII ZONES (HYDROGEN NEBULAUSES) SHINE.\u003c\/p\u003e\n\n\n\u003cp\u003eOIII FILTER: NARROWBAND NEBULAR FILTER LETS 500 NANOMETER LIGHT PASS. IT IS THE TWICE IONIZED OXYGEN LINE. OF THIS COLOR ARE THE PLANETARY NEBULAE AND THE SUPERNOVA REMAINS.\u003c\/p\u003e\n\n\n\u003cp\u003eSII FILTER: THE NARROWBAND FILTER LETS THROUGH THE LIGHT OF IONIZED SULFUR ATOMS AT 672 NANOMETERS. IT IS THE LINE AT WHICH MANY PLANETARY NEBULAE, EMISSION NEBULA AND SUPERNOVA REMAINS SHINE. \u003c\/p\u003e\n\n\n\u003cp\u003eTHE HALF-HEIGHT WIDTH OF 7 NANOMETERS IS THE OPTIMAL CHOICE FOR Astrophotography. SIGNIFICANTLY INCREASES THE CONTRAST OF THE NEBULA.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778882113696,"sku":"ZW-ZWO-SETD125-56431","price":480.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/56431.jpg?v=1773084248"},{"product_id":"zwo-filtro-narrowband-set-filtri-h-alpha-sii-oiii-2","title":"ZWO NARROWBAND FILTER SET H-ALPHA, SII, OIII 2\" FILTERS ","description":"\u003cmeta charset=\"utf-8\"\u003e\n\n\u003cp data-mce-fragment=\"1\" _msttexthash=\"7333742\" _msthash=\"0\"\u003e ZWO's narrowband nebula filters for astrophotography clearly increase the contrast of the object. \u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\" _msttexthash=\"2408120\" _msthash=\"1\"\u003e The set consists of an H-Alpha (656 nm), S-II (672 nm) and O-III (500 nm) filter\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\" _msttexthash=\"1924936\" _msthash=\"2\"\u003e The filters are 2\" in a low profile filter cell\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\" _msttexthash=\"440973\" _msthash=\"3\"\u003e FWHM 7 nm (narrowband)\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\" _msttexthash=\"2628860\" _msthash=\"4\"\u003e Main field of application: photography of dim nebulae\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\" _msttexthash=\"729014\" _msthash=\"5\"\u003e Parfocal with all ZWO filters\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\" _msttexthash=\"1100177\" _msthash=\"6\"\u003eSupplied in practical plastic boxes\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778883621024,"sku":"ZWO-NB7nmD2","price":849.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/65287.jpg?v=1773084343"},{"product_id":"zwo-filtro-filter-ir-pass-1-25","title":"ZWO FILTER IR-PASS 1.25\"","description":"\u003cp\u003eTHE IR PASS FILTER IS DESIGNED TO COMPLETELY CUT THE FREQUENCIES OF THE VISIBLE AND TO LET THROUGH ONLY THOSE OF THE INFRARED, TO WHICH OUR EYES ARE NOT SENSITIVE: FOR THIS REASON IT IS A FILTER FOR PHOTOGRAPHIC APPLICATIONS ONLY.\u003c\/p\u003e\n\n\n\u003cp\u003eIR PASS FILTERS ARE USUALLY USED FOR HIGH MAGNIFICATION Astrophotography. IN FACT, IN THE INFRARED SPECTRUM REGION, THE ATMOSPHERIC TURBULENCE IS LESS THAN THE VISIBLE REGION AND THIS ALLOWS TO RECORD GREATER DETAILS (FOR EXAMPLE, THE BEST PHOTOGRAPHS OF MARS AND THE MOON ARE ALSO TAKEN IN INFRARED). ATTENTION: TO PHOTOGRAPH IN INFRARED YOU MUST USE SPECIAL CAMERAS. IN FACT, NOT ALL ARE SENSITIVE TO SUCH WAVELENGTHS: MONOCHROME THOSE ARE GENERALLY GOOD WHILE COLOR THOSE ARE NOT GOOD TOGETHER WITH AN IR PASS FILTER.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778883686560,"sku":"ZWO-850IR1.25","price":40.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/48571.jpg?v=1773084378"},{"product_id":"zwo-filtro-blocco-ir-asi-d21-ir-cut","title":"ZWO IR BLOCKING FILTER ASI D21 IR-CUT","description":"\u003cp\u003eTHIS FILTER PROTECTS YOUR ROOM SENSOR FROM DUST AND MOISTURE. SINCE THE POINT OF FOCUS IN VISIBLE LIGHT MAY BE DIFFERENT THAN INFRARED IN REFRACTOR, AN IR-CUT FILTER ALSO ALLOWS SHARPER IMAGES. IN REFLECTORS, HOWEVER, A TRANSPARENT FILTER IS SUFFICIENT AS A DUST PROTECTION.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778883981472,"sku":"ZWO-D21IR-CUT","price":30.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/51299.jpg?v=1773084395"},{"product_id":"zwo-filtro-blocco-ir-asi-d25-ir-cut","title":"ZWO IR BLOCKING FILTER ASI D25 IR-CUT","description":"\u003cp\u003e THIS FILTER PROTECTS YOUR ROOM SENSOR FROM DUST AND MOISTURE. SINCE THE POINT OF FOCUS IN VISIBLE LIGHT MAY BE DIFFERENT THAN INFRARED IN REFRACTOR, AN IR-CUT FILTER ALSO ALLOWS SHARPER IMAGES. IN REFLECTORS, HOWEVER, A TRANSPARENT FILTER IS SUFFICIENT AS A DUST PROTECTION.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778884735136,"sku":"ZWO-D25IR-CUT","price":30.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/51301.jpg?v=1773084412"},{"product_id":"filtro-uv-ir-cut-1-25","title":"ZWO UV\/IR BAND BLOCKING FILTER 1.25\"","description":"\u003cp\u003e CCD OR DSLR CAMERAS MAY ALSO BE SENSITIVE IN THE INFRARED AND ULTRAVIOLET SPECTRUM. THIS MAY BE A CHROME BALANCE PROBLEM IN COLOR CAMERA Astrophotography, WHICH IS SOLVED BY USING A UV\/IR BLOCKING FILTER. \u003c\/p\u003e\n\n\n\u003cp\u003eBESIDES THE COLOR BALANCE, THE UV\/IR BLOCK FILTER ALSO IMPROVES THE IMAGE REPRODUCTION CHARACTERISTICS WITH LENS SYSTEMS (FOR EXAMPLE REFRACTOR). THESE SYSTEMS ARE OPTIMIZED FOR THE WAVELENGTHS OF VISIBLE LIGHT, BUT IN THE UV\/IR FIELD THE MORE SENSITIVE AREA REPORT A HALO AROUND THE STAR. ALSO THIS INCONVENIENCE IS ELIMINATED BY THE BLOCK FILTER.\u003c\/p\u003e\n\n\n\u003cp\u003eALSO, IT'S PERFECT FOR SOLAR OBSERVING TOO. THESE SHOULD ONLY BE CONDUCTED THROUGH A PROPER PROTECTIVE FILTER OR HERSCHEL PRISM, BUT THE ADDITIONAL BLOCKING OF HARMFUL UV RAYS IS VERY APPRECIABLE.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42778885128352,"sku":"ZWO-IRCUT125","price":39.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/48583.jpg?v=1773084429"},{"product_id":"player-one-cassetto-portafiltri-per-fotocamera-poseidon-e-zeus","title":"PLAYER ONE FILTER DRAWER FOR POSEIDON AND ZEUS CAMERA","description":"\u003cp\u003e PRODUCT DESCRIPTION:\u003c\/p\u003e\n\u003cbr\u003e\n\n\n\u003cp\u003eFILTER DRAWER MAX\u003c\/p\u003e\n\n\n\u003cp\u003eSUPPORT MODEL: POSEIDON SERIES, ZEUS SERIES, ARTEMIS SERIES.\u003c\/p\u003e\n\n\n\u003cp\u003eFILTER SIZE: 2\" FILTER IS REQUIRED \u003c\/p\u003e\n\n\n\u003cp\u003eMATERIAL: 6061-T6 ALUMINUM\u003c\/p\u003e\n\n\n\u003cp\u003eEXTENSION LENGTH: 21MM\u003c\/p\u003e\n\n\n\u003cp\u003eSTABLE BLOCK\u003cbr\u003e\nMAX FILTER DRAWER USING METAL BEAD SCREW TO LOCK THE DRAWER, THE 3-POINT LOCK CAN MAKE SURE THE DRAWER VERY STABLE IN IMAGING.\u003c\/p\u003e\n\n\n\u003cp\u003eSUPPORT FILTERS\u003cbr\u003e\nTHE DRAWER ITSELF HAS M48*0.75 FEMALE THREAD, IT CAN HOLD A 2\" FILTER.\u003c\/p\u003e\n\n\n\u003cp\u003eCONFIGURATION WITH M2.5 SCREWS \u003cbr\u003e\nON BOTH SIDES OF THE MAX FILTER DRAWER, IT HAS 6 HOLES FOR M2.5 SCREWS. SCREW HOLES ON SIDE OF TELESCOPE USED TO ATTACH FHD-OAG MAX, SCREW HOLES ON SIDE OF CAMERA USED TO ATTACH COOLED CAMERAS.\u003c\/p\u003e","brand":"PLAYER ONE","offers":[{"title":"Default Title","offer_id":42778892075168,"sku":"POA-FD-MAX","price":199.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0447\/9503\/5808\/products\/POA-FD-MAX_00.png?v=1668625458"}],"url":"https:\/\/astrofy.it\/en\/collections\/filtri.oembed?page=6","provider":"ASTROFY ASTRONOMY STORE","version":"1.0","type":"link"}