{"title":"UV\/IR, Clear \u0026 Specialty Filters","description":null,"products":[{"product_id":"chroma-clear-filter","title":"Chroma Filtre Clair","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eFiltres conçus pour être utilisés avec CCD et pour f\/4.0 ou moins\u003c\/li\u003e\n\n\u003cli\u003ePas de reflets entraînant des distorsions d'image ou des \"réflexions arrière\"\u003c\/li\u003e\n\n\u003cli\u003eFront d'onde transmis supérieur à 0,25 onde\/pouce\u003c\/li\u003e\n\n\u003cli\u003eRevêtements de pulvérisation durables\u003c\/li\u003e\n\n\u003cli\u003eParallélisme : \u0026lt; 30 secondes d'arc\u003c\/li\u003e\n\n\u003cli\u003eÉpaisseur : 3,0 +\/-0,05 mm\u003c\/li\u003e\n\n\u003cli\u003eLes revêtements extrêmement durables résistent aux changements d'humidité et aux flux de température extrêmes et restent spectralement précis \u003c\/li\u003e\n\n\u003cli\u003een adhérence CWL et passe-bande\u003c\/li\u003e\n\n\u003cli\u003eCapable de fabriquer de grands filtres pour de grands détecteurs : 50 mm x 50 mm, 65 mm jusqu'à 76,2 mm et carré de 101,6 mm\u003c\/li\u003e\n\n\u003cli\u003eTous les filtres fabriqués au Vermont\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003eChroma fabrique des filtres d'astronomie de la plus haute qualité avec des revêtements durs pulvérisés durables utilisant des substrats uniques du meilleur verre, éliminant ainsi le besoin de stratifications. Tous les revêtements de filtre primaires sont appliqués sur la surface avant et les revêtements anti-reflets sur la surface arrière pour éviter les images fantômes et maximiser la transmission.\u003c\/p\u003e \u003cp\u003eTrès précis et exacts, les bandes passantes de ces filtres restent spectralement stables et ne dérivent pas en réponse aux fluctuations extrêmes de température ou aux changements d'humidité. Tous les filtres peuvent être utilisés avec des ouvertures de f\/4 ou moins. Ils fournissent des services de revêtement personnalisés pour les applications d'imagerie plus exigeantes nécessitant des ouvertures plus grandes telles que f\/3 ou f\/2. Ils peuvent également fournir des tailles plus grandes et des bandes passantes uniques sur demande.\u003c\/p\u003e","brand":"Chroma","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967248822557,"sku":"CT-27044-1.25M","price":182.0,"currency_code":"CAD","in_stock":true},{"title":"31mm rond non monté","offer_id":44967248855325,"sku":"CT-27044-31D","price":182.0,"currency_code":"CAD","in_stock":true},{"title":"36mm rond non monté","offer_id":44967248888093,"sku":"CT-27044-36D","price":210.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967248920861,"sku":"CT-27044-2M","price":525.0,"currency_code":"CAD","in_stock":true},{"title":"50mm rond non monté","offer_id":44967248953629,"sku":"CT-27044-50D","price":455.0,"currency_code":"CAD","in_stock":true},{"title":"50x50mm Carré Non Monté","offer_id":44967248986397,"sku":"CT-27044-50X50","price":490.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Transmission-Curve-of-Chroma-Clear-Filter__90054.1596071523.1280.1280.jpg?v=1684339522"},{"product_id":"baader-acf-dslr-astro-conversion-filter-for-canon-eos-300","title":"Baader Filtre de Conversion Astro ACF - pour Canon EOS 300","description":"\u003c!-- more --\u003e\u003cp\u003e \u003cspan\u003eFiltre de conversion DSLR pour\u003c\/span\u003e Canon EOS 300D\u003c\/p\u003e \u003cp\u003eTransformez votre reflex numérique Canon en une superbe caméra Astro pour le ciel profond. Les filtres de conversion DSLR de Baader remplacent le filtre correcteur d'usine (\"hot mirror\"). Le substrat spécial est recouvert des revêtements renommés de Baader. Les imageurs peuvent désormais obtenir une efficacité totale aux longueurs d'onde H-Alpha et à pleine résolution (le filtre Baader élimine le filtre moiré d'usine Canon, qui réduit la résolution sur les sujets astronomiques). L'épaisseur des filtres Baader DSLR a été conçue pour maintenir le bon point focal d'usine (veuillez noter : le filtre Baader est intentionnellement d'une épaisseur différente de celle du filtre d'usine - cela est nécessaire pour correspondre à l'indice de réfraction effectif du sandwich d'usine. ' filtre).\u003c\/p\u003e \u003cp\u003eLes filtres de conversion Baader DSLR sont produits selon les mêmes spécifications et par les mêmes processus utilisés pour tous leurs autres filtres astronomiques Baader haut de gamme. Chaque filtre est optiquement poli à 1\/4 d'onde et, plus important encore, les revêtements durcis par faisceau d'ions sont appliqués APRÈS la coupe et le polissage. Cet aspect important garantit que vos revêtements ne se décolleront pas ou ne se dégraderont pas en raison des revêtements plus doux et des dommages aux bords causés par les opérations de post-coupe utilisées par certains autres filtres pour réduire les coûts. Avec un filtre Baader, vous n'avez jamais à vous soucier de l'échec prématuré de votre filtre de conversion DSLR interne.\u003c\/p\u003e\n\u003cp\u003e Ce filtre est destiné aux amateurs qui sont à l'aise pour remplacer le filtre d'origine de leur appareil photo. Veuillez noter : Pour de meilleures performances, nous vous recommandons d'installer le filtre avec le côté enduit (rosâtre) vers l'extérieur (FACF-1, II, III). Le FBCF-400D est clair sans côté rosé et ne nécessite aucune orientation particulière. L'astro numérique eGroup est un excellent endroit pour obtenir des conseils sur la façon de remplacer ce filtre.\u003c\/p\u003e \u003cp\u003eVoici un lien vers un tutoriel de remplacement de filtre très bien fait : \u003ca title=\"Pixel de vie\" href=\"http:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\" target=\"_blank\"\u003ehttp:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eVoici une très belle vidéo YouTube réalisée par Gary Honis sur le rétrofit d'un Canon 450D avec le FBCF-400D :\u003c\/span\u003e \u003ca title=\"Gary Honis Youtube\" href=\"https:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\" target=\"_blank\"\u003ehttp:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e Si vous n'êtes pas à l'aise de faire le remplacement vous-même, nous pouvons vous recommander ce service de remplacement à prix raisonnable qui utilise des filtres DSLR Baader authentiques et qui est très expérimenté dans le remplacement des filtres : \u003ca title=\"Imagerie à l'infini (Hap Griffin)\" href=\"http:\/\/www.imaginginfinity.com\/\" target=\"_blank\"\u003eImaging Infinity\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\u003ctable\u003e \u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459211\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825008985\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,012\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e400 – 700 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eautre\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCorrection des couleurs, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erectangulaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967355842845,"sku":"BAA-2459211","price":124.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-ACF-DSLR-Astro-Conversion-Filter-for-Canon-EOS-300-1__99449.1597110898.1280.1280.jpg?v=1684340980"},{"product_id":"baader-acf-dslr-astro-conversion-filter-for-canon-eos-350d-10d-20d-30d","title":"Baader Filtre de Conversion Astro ACF - pour Canon EOS 350D\/10D\/20D\/30D","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003eFiltre de conversion DSLR pour\u003c\/span\u003e Canon EOS 350D\/20D\/10D\/30D. \u003cem\u003eStock limité\u003c\/em\u003e\u003c\/p\u003e \u003cp\u003eTransformez votre reflex numérique Canon en une superbe caméra Astro pour le ciel profond. Les filtres de conversion DSLR de Baader remplacent le filtre correcteur d'usine (\"hot mirror\"). Le substrat spécial est recouvert des revêtements renommés de Baader. Les imageurs peuvent désormais obtenir une efficacité totale aux longueurs d'onde H-Alpha et à pleine résolution (le filtre Baader élimine le filtre moiré d'usine Canon, qui réduit la résolution sur les sujets astronomiques). L'épaisseur des filtres Baader DSLR a été conçue pour maintenir le bon point focal d'usine (veuillez noter : le filtre Baader est intentionnellement d'une épaisseur différente de celle du filtre d'usine - cela est nécessaire pour correspondre à l'indice de réfraction effectif du sandwich d'usine. ' filtre).\u003c\/p\u003e \u003cp\u003eLes filtres de conversion Baader DSLR sont produits selon les mêmes spécifications et par les mêmes processus utilisés pour tous leurs autres filtres astronomiques Baader haut de gamme. Chaque filtre est optiquement poli à 1\/4 d'onde et, plus important encore, les revêtements durcis par faisceau d'ions sont appliqués APRÈS la coupe et le polissage. Cet aspect important garantit que vos revêtements ne se décolleront pas ou ne se dégraderont pas en raison des revêtements plus mous et des dommages aux bords causés par les opérations de post-coupe utilisées par certains autres filtres pour réduire les coûts. Avec un filtre Baader, vous n'avez jamais à vous soucier de l'échec prématuré de votre filtre de conversion DSLR interne.\u003c\/p\u003e\n\u003cp\u003e Ce filtre est destiné aux amateurs qui sont à l'aise pour remplacer le filtre d'origine de leur appareil photo. Veuillez noter : Pour de meilleures performances, nous vous recommandons d'installer le filtre avec le côté enduit (rosâtre) vers l'extérieur (FACF-1, II, III). Le FBCF-400D est clair sans côté rosé et ne nécessite aucune orientation particulière. L'astro numérique eGroup est un excellent endroit pour obtenir des conseils sur la façon de remplacer ce filtre.\u003c\/p\u003e \u003cp\u003eVoici un lien vers un tutoriel de remplacement de filtre très bien fait : \u003ca title=\"Pixel de vie\" href=\"http:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\" target=\"_blank\"\u003ehttp:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eVoici une très belle vidéo YouTube réalisée par Gary Honis sur le rétrofit d'un Canon 450D avec le FBCF-400D :\u003c\/span\u003e \u003ca title=\"Gary Honis Youtube\" href=\"https:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\" target=\"_blank\"\u003ehttp:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e Si vous n'êtes pas à l'aise de faire le remplacement vous-même, nous pouvons vous recommander ce service de remplacement à prix raisonnable qui utilise des filtres DSLR Baader authentiques et qui est très expérimenté dans le remplacement des filtres : \u003ca title=\"Imagerie à l'infini (Hap Griffin)\" href=\"http:\/\/www.imaginginfinity.com\/\" target=\"_blank\"\u003eImaging Infinity\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\u003ctable\u003e \u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459212\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825008978\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,012\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e400 – 700 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eautre\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCorrection des couleurs, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erectangulaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967355908381,"sku":"BAA-2459212","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-ACF-DSLR-Astro-Conversion-Filter-for-Canon-EOS-350D-10D-20D-30D-1__90920.1597110899.1280.1280.jpg?v=1684340982"},{"product_id":"baader-bcf-dslr-astro-conversion-filter-for-canon-eos","title":"Baader Filtre de Conversion Astro BCF - for Canon EOS","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003eFiltre de conversion DSLR pour\u003c\/span\u003e appareils photo Canon APS-C (tous les derniers modèles, ainsi que les anciens EOS 7D\/40D\/50D\/60D\/400D\/450D\/500D\/550D\/600D\/650D\/1000D\/1100D\/Rebel XS\/T1i\/T2i\/ T3\/T3K,T4i)\u003c\/p\u003e\n\u003cp\u003e Transformez votre reflex numérique Canon en une superbe caméra Astro pour le ciel profond. Les filtres de conversion DSLR de Baader remplacent le filtre correcteur d'usine (\"hot mirror\"). Le substrat spécial est recouvert des revêtements renommés de Baader. Les imageurs peuvent désormais obtenir une efficacité totale aux longueurs d'onde H-Alpha et à pleine résolution (le filtre Baader élimine le filtre moiré d'usine Canon, qui réduit la résolution sur les sujets astronomiques). L'épaisseur des filtres Baader DSLR a été conçue pour maintenir le bon point focal d'usine (veuillez noter : le filtre Baader est intentionnellement d'une épaisseur différente de celle du filtre d'usine - cela est nécessaire pour correspondre à l'indice de réfraction effectif du sandwich d'usine. ' filtre).\u003c\/p\u003e \u003cp\u003eLes filtres de conversion Baader DSLR sont produits selon les mêmes spécifications et par les mêmes processus utilisés pour tous leurs autres filtres astronomiques Baader haut de gamme. Chaque filtre est optiquement poli à 1\/4 d'onde et, plus important encore, les revêtements durcis par faisceau d'ions sont appliqués APRÈS la coupe et le polissage. Cet aspect important garantit que vos revêtements ne se décolleront pas ou ne se dégraderont pas en raison des revêtements plus doux et des dommages aux bords causés par les opérations de post-coupe utilisées par certains autres filtres pour réduire les coûts. Avec un filtre Baader, vous n'avez jamais à vous soucier de l'échec prématuré de votre filtre de conversion DSLR interne.\u003c\/p\u003e\n\u003cp\u003e Ce filtre est destiné aux amateurs qui sont à l'aise pour remplacer le filtre d'origine de leur appareil photo. Veuillez noter : Pour de meilleures performances, nous vous recommandons d'installer le filtre avec le côté enduit (rosâtre) vers l'extérieur (FACF-1, II, III). Le FBCF-400D est clair sans côté rosé et ne nécessite aucune orientation particulière. L'astro numérique eGroup est un excellent endroit pour obtenir des conseils sur la façon de remplacer ce filtre.\u003c\/p\u003e \u003cp\u003eVoici un lien vers un tutoriel de remplacement de filtre très bien fait : \u003ca title=\"Pixel de vie\" href=\"http:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\" target=\"_blank\"\u003ehttp:\/\/www.lifepixel.com\/ir-tutorials\/canon-rebel-xt-300d-digital-infrared-conversion-instructions.htm\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eVoici une très belle vidéo YouTube réalisée par Gary Honis sur le rétrofit d'un Canon 450D avec le FBCF-400D :\u003c\/span\u003e \u003ca title=\"Gary Honis Youtube\" href=\"https:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\" target=\"_blank\"\u003ehttp:\/\/www.youtube.com\/watch?v=-IIN0-q2WLY\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e Si vous n'êtes pas à l'aise de faire le remplacement vous-même, nous pouvons vous recommander ce service de remplacement à prix raisonnable qui utilise des filtres DSLR Baader authentiques et qui est très expérimenté dans le remplacement des filtres : \u003ca title=\"Imagerie à l'infini (Hap Griffin)\" href=\"http:\/\/www.imaginginfinity.com\" target=\"_blank\"\u003eImaging Infinity\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\n\n\u003ctable\u003e \u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459213\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825019721\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,044\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e400 – 700 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eautre\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCorrection des couleurs, H-alpha, IR-Cut, UV-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erectangulaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967355941149,"sku":"BAA-2459213","price":114.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-BCF-DSLR-Astro-Conversion-Filter-for-Canon-EOS-7D-40D-50D-60D-400D-450D-500D-550D-600D-650D-1000D-1100D-1__19322.1597110900.1280.1280.jpg?v=1684340985"},{"product_id":"baader-clear-focusing-filter","title":"Baader Filtre Clair pour Mise au Point","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eFiltres en verre transparent RVB-C imperméables de qualité supérieure Baader.\u003c\/li\u003e\n\n\u003cli\u003eLes filtres en verre transparent Baader sont utilisés pour focaliser une caméra lors de l'utilisation de filtres de ligne à bande très étroite (en raison de la même épaisseur mécanique).\u003c\/li\u003e\n\n\u003cli\u003eFonction alternative : par exemple, notre anneau en T de protection Canon EOS utilise un filtre en verre transparent pour la protection contre la poussière\u003c\/li\u003e\n\n\u003cli\u003eAUCUN halo, AUCUN reflet, AUCUN effet fantôme\u003c\/li\u003e\n\n\u003cli\u003eBords de revêtement scellés anti-vieillissement\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/fr-us\/pages\/why-baader-planetarium-filters\"\u003ePourquoi les filtres de planétarium Baader ?\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n \u003cdiv\u003e\n\n\u003ch2\u003e1.25\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458415\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825021403\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,059\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003espectre complet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e1 25 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e2\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458416\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825021410\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,065\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003espectre complet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e2 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e31mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458414\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,026\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003espectre complet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e31 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eVerre propre\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e36mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459423\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825023766\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,026\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003espectre complet \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e36 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e50,4 mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458420\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825021427\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,07\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION \u003c\/th\u003e\n\n\u003ctd\u003espectre complet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e50,4 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ? \u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e50x50mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458421\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825021434\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,073\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003espectre complet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e50 x 50 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ecarré\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e65x65mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459405\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825023681\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,087\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003espectre complet\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e65 x 65 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eMise au point\/protection contre la poussière\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ecarré\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_baader_anti_reflection_lrgbc_filters_j_schedler.pdf?v=1684340627?v=1590143376\" target=\"_blank\"\u003eRevue de test - Baader-Anti-Reflection LRGBC-Filters - J. Schedler\u003c\/a\u003e \u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967356039453,"sku":"BAA-2458415","price":63.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967356072221,"sku":"BAA-2458416","price":105.0,"currency_code":"CAD","in_stock":true},{"title":"Filtre non monté rond de 31 mm","offer_id":44967356104989,"sku":"BAA-2458414","price":78.0,"currency_code":"CAD","in_stock":true},{"title":"Filtre non monté rond de 36 mm","offer_id":44967356137757,"sku":"BAA-2459423","price":70.0,"currency_code":"CAD","in_stock":true},{"title":"Filtre non monté rond de 50,4 mm","offer_id":44967356170525,"sku":"BAA-2458420","price":121.0,"currency_code":"CAD","in_stock":true},{"title":"Filtre carré 50x50mm","offer_id":44967356203293,"sku":"BAA-2458421","price":140.0,"currency_code":"CAD","in_stock":true},{"title":"Filtre carré 65x65mm","offer_id":44967356236061,"sku":"BAA-2459405","price":152.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Clear-Focusing-Filter-1__69249.1597110902.1280.1280.jpg?v=1684340987"},{"product_id":"baader-ir-pass-filter-685nm","title":"Baader Filtre Passe-Bande IR 685nm","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003eFiltre passe-IR Baader HWB 685nm\u003c\/li\u003e\n\n\u003cli\u003eRéduit l'effet de vision résultant en une image beaucoup plus nette.\u003c\/li\u003e\n\n\u003cli\u003eIdéal pour l'imagerie et utilisé pour le canal de luminosité.\u003c\/li\u003e\n\n \u003cli\u003eUtilisation : la bande passante spectrale normale est de 400 à 700 nm. Ce filtre commence à 670 nm dans le rouge profond, juste dans la gamme visuelle afin qu'il puisse être correctement focalisé. Dans cette plage spectrale de grande longueur d'onde, la turbulence de l'air atmosphérique (voir) a un impact beaucoup plus faible sur la netteté. Les structures sombres sur Mars, Jupiter, la Lune et le Soleil sont ainsi rendues beaucoup plus nettes. La luminosité peut ensuite être combinée avec le RVB pour créer une image LRGB très nette.\u003c\/li\u003e\n\n\u003cli\u003eFortement recommandé pour tout imageur planétaire.\u003c\/li\u003e\n\n\u003cli\u003eSans reflet et poli optiquement.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e \u003cp\u003eBaader Planetarium fournit le dernier outil dans le sac d'astuces de l'imageur planétaire. Le filtre Baader IR-Pass bloque les longueurs d'onde inférieures à 670 nm. A ces longueurs d'onde plus longues, les images planétaires sont moins perturbées par les distorsions du front d'onde dans l'atmosphère (voir). En combinant une image de luminance prise avec le filtre IR-Pass, avec des cadres RVB, la netteté globale de l'image est considérablement améliorée. Certaines des meilleures images planétaires amateurs au monde ont été prises avec cette technique.\u003cbr\u003e\u003cbr\u003e Assombrit également le fond du ciel crépusculaire, permettant aux mages de la lune et des planètes d'être capturés à l'aube ou au crépuscule. Les images du ciel profond révèlent de jeunes étoiles chaudes dans des nuages ​​de poussière et des régions de formation d'étoiles.\u003cbr\u003e\u003cbr\u003e Le filtre IR-Pass partage les mêmes caractéristiques exceptionnelles que tous les autres filtres Baader. Une qualité optique élevée, un substrat sans stries et des multicouches à haute efficacité permettent d'obtenir l'image la plus nette et la plus contrastée possible.\u003cbr\u003e \u003cbr\u003eEn plus des utilisations astronomiques, le filtre IR-Pass peut être utilisé pour la photographie de la nature dans le proche infrarouge, révélant des différences étonnantes dans les plantes, le ciel et les nuages ​​(nécessite l'utilisation d'un appareil photo sensible à l'infrarouge au-dessus de 670 nm, tel qu'un DSLR ou webcam).\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"source=\" https:\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eCourbe de filtre Baader IR-Pass Filter (FIRP)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e Le tracé de transmission ci-dessus n'est pas une courbe théorique - mais une mesure réelle prise d'un filtre Baader IR-Pass.\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\n\n\u003ch2\u003e1.25\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458385\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n \u003ctd\u003e4047825009418\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,059\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e\u0026gt; 685 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e1 25 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n \u003ctd\u003eAmélioration du contraste, IR-Pass, Planétaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e2\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458386\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009401\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,066\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e\u0026gt; 685 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e2 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eAmélioration du contraste, IR-Pass, Planétaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e \u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_ir_pass_uv_ir_comparison_w_paech.pdf?v=1684340647?v=1590140001\" target=\"_blank\"\u003eRevue de test - Comparaison IR-Pass \/ UV-IR - W. Paech\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_hints_tricks_for_high_resolution_lunar_and_planetary_photography_with_baader_planetarium_accessories_by_wolfgang_paech.pdf?v=1684340650?v=1585759557\" target=\"_blank\"\u003eConseils et astuces pour la photographie lunaire et planétaire haute résolution avec les accessoires Baader Planetarium de Wolfgang Paech\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967357645085,"sku":"BAA-2458385","price":132.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967357677853,"sku":"BAA-2458386","price":209.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-IR-Pass-Filter-685nm-1__95154.1597110927.1280.1280.jpg?v=1684341019"},{"product_id":"baader-contrast-booster-filter","title":"Baader Filtre Contrast-Booster","description":"\u003c!-- more --\u003e\u003cp\u003e \u003cspan\u003ePour l'observation solaire, utilisez uniquement en combinaison avec le film de sécurité Baader AstroSolar !\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n \u003cli\u003eÉlimine l'erreur de couleur des réfracteurs économiques.\u003c\/li\u003e\n\n\u003cli\u003eAffiche clairement la qualité réelle de l'objectif.\u003c\/li\u003e\n\n\u003cli\u003eSupprime la \"teinte\" bleuâtre (=manque de contraste) lors de l'observation lunaire, planétaire, solaire et terrestre.\u003c\/li\u003e\n\n\u003cli\u003eAccentue fortement les détails de surface sur Jupiter et Mars. Si vous n'avez jamais vu le GRS (Great Red Spot) sur Jupiter - avec ce filtre, vous le ferez.\u003c\/li\u003e\n\n\u003cli\u003ePlus de 95 % de transmission - fournit une image lumineuse et brillante par rapport aux filtres de couleur vert foncé habituels, utilisés pour faire ressortir les détails sur Jupiter. La définition des couleurs est conservée.\u003c\/li\u003e\n\n\u003cli\u003eLe nec plus ultra des filtres lunaires. La Lune (et le Soleil) apparaissent de couleur beaucoup plus naturelle (avec une légère teinte jaunâtre), par rapport aux filtres lunaires vert foncé à bas prix habituels, généralement proposés pour les télescopes débutants.\u003c\/li\u003e\n\n \u003cli\u003eSupprime complètement les fausses couleurs gênantes et les détails d'image maculés et délavés qui en résultent. Vous n'avez jamais vu la Lune ou le Soleil (avec le film de sécurité AstroSolar) aussi net dans un télescope achromatique économique.\u003c\/li\u003e\n\n\u003cli\u003eBloque la \"lumière parasite\" atmosphérique (skyglow). Le fond du ciel se transforme en noir absolu.\u003c\/li\u003e\n\n\u003cli\u003eS'adapte aux filetages de filtre standard de 1¼\" et 2\". Planéoptiquement poli, adapté pour être utilisé devant une visionneuse binoculaire, ou pour une projection d'image a-focale lors d'une imagerie numérique (bien devant le plan focal).\u003c\/li\u003e\n\n\u003cli\u003eAucune détérioration de la résolution avec des grossissements de 200x et plus - comme avec le verre \"brut poli\" (poli à la flamme).\u003c\/li\u003e\n\n\u003cli\u003eSubstrat (verre en fusion) Verre dopé au néodyme.\u003c\/li\u003e\n\n\u003cli\u003eRevêtement \/ face arrière : revêtement multicouche dur 7 couches, avec 0,25 % de réflexion.\u003c\/li\u003e\n\n\u003cli\u003eRevêtement \/ face avant : bloqueur passe-long diélectrique 23 couches. \u003c\/li\u003e\n\n\u003cli\u003eRevêtements durcis par faisceau d'ions sur les deux faces, absolument résistants aux rayures - peuvent être nettoyés à tout moment sans crainte. Bords de revêtement scellés anti-vieillissement\u003c\/li\u003e\n\n\u003cli\u003eUne partie importante de la pollution lumineuse de la ville, ainsi que de l'Airglow atmosphérique, est supprimée de l'image télescopique.\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/fr-us\/pages\/why-baader-planetarium-filters\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePourquoi les filtres de planétarium Baader ?\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e \u003cp\u003eBien plus qu'un simple filtre moins violet. Basé sur le populaire filtre Baader Moon \u0026amp; Skyglow, le Baader Contrast-Booster prend l'amélioration du contraste et la réduction du skyglow au niveau maximum possible à partir d'un filtre. Non seulement ce filtre offre une amélioration significative des contrastes planétaires et lunaires, mais il est également conçu pour éliminer totalement la brume bleue défocalisée dommageable présente dans les réfracteurs achromatiques. Fini le halo bleu ennuyeux et la brume obscurcissante qui entourent et maculent la résolution et le contraste. Les contrastes subtils et les couleurs sont amplifiés, tout en affichant la pleine résolution dont votre lunette est capable.\u003c\/p\u003e \u003cp\u003eLe Contrast-Booster combine une fusion spéciale exclusive de verre au néodyme avec un bloqueur passe-long diélectrique à 23 couches soigneusement conçu sur une face et un revêtement antireflet ultra-faible à 7 couches sur l'autre face. En filtrant agressivement les longueurs d'onde bleues défocalisées, une teinte jaune clair est conférée aux objets (nettement moins qu'un filtre jaune typique). Les revêtements spéciaux permettent une transmission de plus de 95 % sur les parties clés du spectre visible (y compris H-Alpha). Il en résulte un filtre qui conserve les couleurs et les contrastes de couleurs des sujets difficiles comme Jupiter, sans atténuation excessive de l'image. Les bandes nuageuses conservent leurs teintes rouges vermillon, mais deviennent maintenant plus frappantes en contraste. La Grande Tache Rouge devient enfin plus facile. Les planètes et les paysages lunaires se détachent sur un ciel noir de jais. Le Contrast-Booster est un must pour l'observation solaire (avec Baader Astro Solar).\u003c\/p\u003e \u003cp\u003eComme de nombreux utilisateurs l'ont trouvé, il s'agit d'un excellent filtre pour Mars ! Les vues de Mars avec tous les télescopes (y compris les réflecteurs et les apochromates) bénéficient de la filtration RVB et du blocage du bleu.\u003c\/p\u003e \u003cp\u003eCombiné avec le filtre Baader UV-IR-Cut, le Contrast-Booster constitue le filtre idéal pour l'imagerie numérique. Plutôt que d'ajouter le coût d'une filtration IR supplémentaire (uniquement nécessaire pour l'imagerie numérique), le Baader Contrast Booster a été optimisé pour une utilisation visuelle. Les imageurs numériques peuvent simplement ajouter notre filtre Baader UV-IR-Cut en cas de besoin. Les véritables surfaces finement polies 1\/4 d'onde garantissent la netteté et le contraste de l'image. Les filtres sont disponibles dans les tailles 1¼\" et 2\". Le substrat de base est une fusion spéciale de verre dopé au néodyme, conçu pour des caractéristiques de transmission spécifiques et fabriqué uniquement pour le planétarium Baader. En plus de ses caractéristiques spectrales uniques, le Contrast-Booster offre les caractéristiques optiques et mécaniques caractéristiques de Baader qui le distinguent et se traduisent par la meilleure netteté d'image, le contraste et la durabilité dans le monde réel ;\u003c\/p\u003e \u003cp\u003e\u003cem\u003e\"Le filtre amplificateur de contraste supprime certainement la lueur violette de mon réfracteur 6\" f\/8 à la fois sur les étoiles brillantes et sur la lune. Cela donne une teinte jaune \"chaude\" aux deux. Je me suis vite habitué à cela lors de l'observation de la lune et cela n'a posé aucun problème. J'ai essayé sur Mars. Malheureusement, je suis trop au nord (+53deg) pour échapper aux pires effets de l'atmosphère terrestre et voir varié de passable à terrible. Pourtant, cela rendait les marques sombres plus clairement visibles. La qualité du verre est superbe. Certains autres filtres que j'ai utilisés provoquent un adoucissement des détails; pas ainsi avec le Baader. Dans l'ensemble, un ajout très utile à mes outils d'observation ; et à un très bon prix.\"\u003c\/em\u003e \u003cstrong\u003ePat Abbott\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cem\u003e\"Je voulais juste vous faire savoir que le filtre Baader Contrast Booster est un EXCELLENT produit. De loin le meilleur filtre que j'ai utilisé sur Mars. J'attends avec impatience Jupiter et Saturne. Cela m'a aussi vraiment aidé avec l'imagerie de ma webcam de Mars.\"\u003c\/em\u003e \u003cstrong\u003eGordon Dayton\u003c\/strong\u003e \u003c\/p\u003e\n\u003ca href=\"#transmission-curve_0-1\" id=\"st-link-transmission-curve_0-1\" class=\"station-tabs-link\" role=\"tab\" aria-controls=\"st-transmission-curve_0-1\" aria-selected=\"false\" tabindex=\"-1\"\u003e\u003cspan\u003eCourbe de transmission\u003c\/span\u003e\u003c\/a\u003e\u003cdiv\u003e\n\n\u003cp\u003e\u003cimg alt=\"source=\" https:\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTransmissionskurve La ligne de transmission de Baader Contrast Booster\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg alt=\"source=\" https:\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTransmissionskurve mit UV\/IR Sperrfilter La ligne de transmission de Baader Contrast Booster, combinée avec le filtre de coupure UV\/IR pour CCD Astronomy\u003c\/strong\u003e\u003c\/p\u003e\n\n \u003cp\u003eLa courbe de transmission montre la transmission de la lumière en pourcentage par rapport à la longueur d'onde de la lumière en nanomètres. Notez la transmission élevée pour les observations visuelles de H-alpha (98%), H-beta (87%) et OIII (82%). Dans une ville polluée par la lumière, les lampadaires à vapeur de mercure et de sodium émettent à 435 nm et entre 570 et 590 nm. Ici, la transmission du filtre est comprise entre 0,3 et 3 %. Avec le filtre de coupure UV \/ IR Baader, Baader Contrast Booster est en outre un filtre optimal pour les images CCD des grandes villes et des zones métropolitaines polluées par la lumière (voir la deuxième courbe de filtre).\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\n\n\u003ch2\u003e1.25\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#) \u003c\/th\u003e\n\n\u003ctd\u003e2458360\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009517\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,059\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003eplusieurs bandes (voir image spectrale)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e1 millimètre\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eGroupe Phantom Coating®, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE \u003c\/th\u003e\n\n\u003ctd\u003e1 25 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eAmélioration du contraste, Correction des couleurs, IR-Cut, Planétaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e2\" \u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458365\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009500\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,067\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003eplusieurs bandes (voir image spectrale)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e1 millimètre\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eGroupe Phantom Coating®, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e2 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eAmélioration du contraste, Correction des couleurs, IR-Cut, Planétaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003eSUPPORTZ\u003cp\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_baader_contrast_booster.pdf?v=1684340670?v=1590139276\" target=\"_blank\"\u003eBooster de contraste Baader\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_baader_anti_fringing_filters_astronomy_technology_today.pdf?v=1684340675?v=1590139318\" target=\"_blank\"\u003eRevue de test - Filtres anti-fringing Baader - Astronomy Technology Today\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967360135453,"sku":"BAA-2458360","price":130.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967360168221,"sku":"BAA-2458365","price":209.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Contrast-Booster-Filter-1__53178.1597110973.1280.1280.jpg?v=1684341355"},{"product_id":"baader-fringe-killer-filter","title":"Baader Filtre Fringe-Killer","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003e* Tel que revu dans le ciel et le télescope d'avril 2004 *\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003ePourquoi les filtres de planétarium Baader ?\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eLes propriétaires d'Achromat se réjouissent ! Baader Planetarium a porté la filtration moins violette à un nouveau niveau. Le Fringe Killer apporte à l'amateur un type de filtration encore jamais vu. Plutôt que de simplement couper les longueurs d'onde plus courtes à une longueur d'onde et une pente choisies comme tous les autres filtres moins violets, le Fringe Killer atténue soigneusement une région spécifique du spectre. Cela a permis à Baader de régler le filtre pour une réduction pratique maximale des longueurs d'onde bleues défocalisées les plus dommageables, avec seulement un léger décalage de couleur jaune - sans gradation ni diminution du contraste de l'image en recourant à la réduction des importantes longueurs d'onde vert-jaune pour restaurer grossièrement une couleur apparente équilibre! (où l'œil est très sensible et où les réfracteurs sont les plus nets) Le résultat est un filtre qui supprime la majorité des franges de couleur, sans affecter la luminosité de l'image, sans conférer une forte coloration ou réduire le contraste à des longueurs d'onde importantes. Comme tout propriétaire de télescope le sait, la lumière est une denrée précieuse pour l'observation des planètes et du ciel profond, et le tueur de franges préserve le maximum de lumière possible. Les observateurs terrestres trouveront également les qualités de ce filtre idéales pour leurs besoins.\u003c\/p\u003e \u003cp\u003eLa haute qualité des filtres Baader Planetarium permet un empilement sans dégradation de l'image. Pour une vue encore moins colorée, avec des contrastes de couleurs sensiblement renforcés, nous vous recommandons fortement d'empiler un filtre Moon \u0026amp; Skyglow avec le Fringe Killer. Ces deux filtres se complètent, et le résultat est une vue presque totalement neutre (pas de coloration). La luminosité de l'image est également très peu affectée, grâce à la formule optimisée du Moon \u0026amp; Skyglow, ainsi qu'aux superbes revêtements antireflet.\u003c\/p\u003e\n\u003cp\u003e Pour deux critiques d'utilisateurs récentes du Fringe Killer, veuillez consulter Cloudy Nights sur : \u003ca href=\"http:\/\/www.cloudynights.com\/accessories2\/fringe.htm\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehttp:\/\/www.cloudynights.com\/accessories2\/fringe.htm\u003c\/a\u003e et le site NexStar de Mike Swanson sur : \u003ca href=\"http:\/\/www.nexstarsite.com\/Reviews\/BaaderFringeKiller.htm\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehttp:\/\/www.nexstarsite.com\/Reviews\/ BaaderFringeKiller.htm\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003eLe Fringe Killer est le complément parfait du Baader Contrast Booster. Le Contrast Booster est un filtre agressif, conçu pour offrir le maximum de netteté et de contraste possible à partir d'un achromat. Le résultat est une suppression complète de la brume violette, avec une image un peu plus sombre et plus jaune. Le Contrast Booster intègre également une filtration RVB supplémentaire pour améliorer encore les contrastes de couleurs. Le Fringe Killer fournit une filtration plus douce et plus naturelle, qui laisse les achromats rapides fonctionner comme un achromat f\/15 classique. Le Fringe Killer offre ce que nous pensons être une combinaison idéale de résolution améliorée, de contraste et de luminosité d'image inchangée, ainsi qu'une vue très esthétique.\u003c\/p\u003e \u003cp\u003eLes revêtements nécessaires pour accomplir cette filtration innovante sont extrêmement complexes, nécessitant près de 50 couches par côté, en utilisant le dernier procédé de revêtement assisté par plasma DWDM. Le Fringe Killer a peut-être le revêtement le plus complexe jamais réalisé sur un filtre astronomique amateur Les imageurs numériques (CCD, DigiCam et Webcam) trouveront que le Fringe Killer est le compagnon ultime pour leur lunette achromatique. La transmission élevée et la réduction des franges fonctionnent parfaitement pour l'imagerie planétaire et du ciel profond. Baader a également choisi d'inclure ses célèbres revêtements UV\/IR Cut dans la formule Fringe Killer. Ces revêtements maintiennent une transmission très élevée, avec des coupures nettes bien placées dans l'IR et l'UV (voir le filtre UV\/IR Cut ci-dessous, pour plus de détails sur ces revêtements).\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eComme tous les autres filtres Baader Planetarium, le Fringe Killer offre sa haute qualité et ses caractéristiques. Le résultat est une performance et une valeur inégalées dans l'industrie. Pour plus d'informations sur ce filtre, y compris les courbes spectrales\u003c\/span\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_baader_fringe_killer_filter.pdf?v=1684340688?v=1590139581\" target=\"_blank\"\u003eBaader Fringe Killer Filter\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"\/fr-us\/pages\/why-baader-planetarium-filters\"\u003ePourquoi les filtres de planétarium Baader ?\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cb\u003e\u003ci\u003ePhoto d'un tueur de franges tenu sur une feuille de papier à la lumière naturelle du soleil, illustrant la transmission élevée et la faible coloration.\u003c\/i\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cb\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_FringeKillerColor_480x480.jpg?v=1684340689?v=1585153272\" alt=\"\u0026gt;\u0026lt;\/b\u0026gt;\u0026lt;\/p\u0026gt;\u0026lt;\/div\u0026gt;\u0026lt;\/div\u0026gt;\u0026lt;div data-custom-tab\u0026gt;\u0026lt;p data-custom-tab-title\u0026gt;Spécifications\u0026lt;\/p\u0026gt;\u0026lt;div\u0026gt;\u0026lt;h2\u0026gt;\u0026lt;b\u0026gt;1.25\"\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003cb\u003e\n\u003c\/b\u003e\u003ctr\u003e\n\u003cb\u003e\n\u003c\/b\u003e\u003cth\u003e\u003cb\u003eFABRICANT\u003c\/b\u003e\u003c\/th\u003e\n\u003cb\u003e\n\u003c\/b\u003e\u003ctd\u003e\u003cb\u003ePlanétarium Baader\u003c\/b\u003e\u003c\/td\u003e\n\u003cb\u003e\n\u003c\/b\u003e\n\u003c\/tr\u003e\n\u003cb\u003e\n\u003c\/b\u003e\u003ctr\u003e\n\u003cb\u003e\n\u003c\/b\u003e\u003cth\u003e\u003cb\u003eUGS (#)\u003c\/b\u003e\u003c\/th\u003e\n\u003cb\u003e\n\u003c\/b\u003e\u003ctd\u003e\u003cb\u003e2458370\u003c\/b\u003e\u003c\/td\u003e\n\u003cb\u003e\n\u003c\/b\u003e\n\u003c\/tr\u003e\n\u003cb\u003e\n\u003c\/b\u003e \u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009494\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,059\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003eplusieurs bandes (voir image spectrale)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eGroupe Phantom Coating®, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e1 25 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCorrection des couleurs, IR-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e\u003cb\u003e2\"\u003c\/b\u003e\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458375\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,065\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003eplusieurs bandes (voir image spectrale)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eGroupe Phantom Coating®, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e2 pouces \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCorrection des couleurs, IR-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_baader_fringe_killer_filter.pdf?v=1684340688?v=1590139581\" target=\"_blank\"\u003eFiltre tueur de franges Baader\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_baader_anti_fringing_filters_astronomy_technology_today.pdf?v=1684340675?v=1590139318\" target=\"_blank\"\u003eRevue de test - Filtres anti-fringing Baader - Astronomy Technology Today\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967362101533,"sku":"BAA-2458370","price":134.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967362134301,"sku":"BAA-2458375","price":194.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Fringe-Killer-Filter-1__75286.1597110982.1280.1280.jpg?v=1684341115"},{"product_id":"baader-semi-apo-filter","title":"Baader Filtre Semi-APO","description":"\u003c!-- more --\u003e\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003eDeux filtres en un pour une luminosité maximale\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003eCombine Fringe-Killer avec Moon \u0026amp; Skyglow pour un contraste semi-APO avec réfracteurs\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003eBords de revêtement scellés anti-vieillissement\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e \u003cp\u003eLa solution idéale de Baader pour les propriétaires d'Achromat. Le Semi-APO fonctionne comme son nom l'indique - offrant une vue très neutre, tout en coupant la plupart des franges violettes ennuyeuses et contrastantes qui affligent tous les achromats. Le filtre Semi-APO combine une formule de revêtement Fringe Killer plus forte avec le substrat Moon\u0026amp;Skyglow Neodymium. Le résultat est une performance similaire à la combinaison Fringe Killer + Moon\u0026amp;Skyglow, mais avec une coupe violette légèrement plus forte - et à une valeur $$ encore plus élevée.\u003cbr\u003e \u003cbr\u003eLe filtre Semi-APO bénéficie de tous les attributs de filtre Baader de classe mondiale. Le filtre Semi-APO est vraiment le filtre de type \"moins violet\" le plus avancé au monde à tous égards. Sa haute efficacité et sa coloration neutre le font pratiquement disparaître à l'usage - tout en faisant disparaître la plupart des franges violettes ! Les effets sur la netteté, le contraste et l'esthétique sont remarquables, même avec de petits réfracteurs. L'amélioration RVB du substrat en néodyme augmente en fait les contrastes de couleurs, en particulier pour Jupiter et Mars.\u003cbr\u003e \u003cbr\u003eComme avantage secondaire, le filtre Semi-APO s'est également avéré être le meilleur filtre Mars que nous ayons utilisé - avec TOUS les télescopes, y compris les grands Dobson, SCT et Apochromats. Les propriétés uniques qui résultent de la combinaison de l'atténuation de la longueur d'onde bleue du Fringe Killer (atténuation - pas élimination totale), plus les bandes passantes RVB sélectives au néodyme, entraînent une amélioration significative du contraste des caractéristiques martiennes. L'image conserve sa coloration et sa luminosité naturelles, et les surfaces polies optiquement conservent chaque élément de la netteté de l'image, contrairement aux filtres d'autres fabricants.\u003cbr\u003e \u003cbr\u003eLa haute qualité des filtres Baader Planetarium permet leur utilisation bien en avant du plan focal sans dégradation de l'image (c'est-à-dire pour les caméras ou les binoculaires). L'inclusion des célèbres revêtements UV\/IR Cut de Baader sur le Semi-APO élimine les longueurs d'onde UV et IR pour le rendre idéal pour l'imagerie haute résolution avec les webcams, les reflex numériques et les caméras CCD (voir le filtre UV\/IR Cut ci-dessous, pour plus de détails). sur ces revêtements). La transmission élevée et la réduction des franges fonctionnent parfaitement pour l'imagerie planétaire et du ciel profond.\u003cbr\u003e\u003cbr\u003e Veuillez vous référer à \u003ca href=\"\/fr-us\/products\/baader-fringe-killer-color-correction-filter\"\u003eFringe Killer\u003c\/a\u003e et \u003ca href=\"\/fr-us\/products\/baader-neodymium-moon-skyglow-filter\"\u003eMoon\u0026amp;Skyglow\u003c\/a\u003e pour plus de détails sur tous les autres aspects du filtre Semi-APO.\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"\/fr-us\/pages\/why-baader-planetarium-filters\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePourquoi les filtres de planétarium Baader ?\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\n\n\u003ch2\u003e1.25\" \u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458398\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009340\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,057\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003eplusieurs bandes (voir image spectrale)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e1 millimètre\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eGroupe Phantom Coating®, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e1 25 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCCD, Correction des couleurs, IR-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e2\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2458399\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009333\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,062\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n \u003ctd\u003eplusieurs bandes (voir image spectrale)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e1 millimètre\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eGroupe Phantom Coating®, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e2 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCCD, Correction des couleurs, IR-Cut\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE \u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"moretab\" data-title=\"Downloads \u0026amp; Support\"\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\n \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_baader_anti_fringing_filters_astronomy_technology_today.pdf?v=1684340675?v=1590139318\" target=\"_blank\"\u003eRevue de test - Filtres anti-fringing Baader - Astronomy Technology Today\u003c\/a\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967364624669,"sku":"BAA-2458398","price":132.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967364657437,"sku":"BAA-2458399","price":238.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Semi-APO-Filter-1__73856.1597110994.1280.1280.jpg?v=1684341176"},{"product_id":"baader-uv-ir-cut-l-filter-cmos-optimized","title":"Baader UV\/IR-CUT\/L-Filter optimisé CMOS","description":"\u003c!-- more --\u003e \u003cp\u003eBaader Planetarium produit le meilleur filtre anti-UV\/IR au monde. son utilisation est devenue la norme de facto pour les imageurs du monde entier. Ce filtre est indispensable pour toute imagerie numérique avec appareils photo numériques, caméras CCD\/CMOS et WebCams. Également utile pour protéger les précieux filtres H-Alpha du stress thermique et des IR nocifs (Daystar, etc.). En raison de leur qualité optique extrêmement élevée, ces filtres peuvent être empilés et utilisés loin devant le plan focal (nécessaire pour les utilisations en imagerie). Comme le Baader Planetarium Contrast-Booster, le filtre UV-IR-Cut utilise la toute dernière technologie de revêtement, pour offrir la meilleure qualité de filtration - et une durabilité à vie. Disponible dans toutes les tailles courantes montées et non montées pour s'adapter à pratiquement n'importe quelle caméra, y compris la nouvelle taille de 100 mm pour les applications vidéo professionnelles (101 x 143 x 3 mm).\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eTransmission moyenne inégalée de 98 % ! Absence d'images fantômes (multicouche à très faible réflexion, sans stries et substrat plan parallèle). \u003c\/li\u003e\n\n\u003cli\u003eCoupure extrêmement nette à 680 nm (laisse tout le rouge visible, y compris l'importante raie d'émission H-alpha à 656 nm).\u003c\/li\u003e\n\n\u003cli\u003eCoupure nette en dessous de 420 nm. Élimine les halos violets autour des étoiles brillantes (plus efficacement que les filtres photographiques dits Minus Violet plus simples).\u003c\/li\u003e\n\n\u003cli\u003eVéritable substrat et revêtements en verre de qualité optique. Pourquoi dépenser tout votre argent dans des optiques primaires de qualité - uniquement pour placer une optique de filtre de qualité inférieure dans le chemin ?\u003c\/li\u003e\n\n\u003cli\u003eCombinez-le avec l'un des autres filtres Baader pour obtenir les images les plus nettes possibles.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\"J'ai le filtre uv-ir-cut. Monté à l'intérieur d'un objectif de 400 mm que j'ai collé à un appareil photo bon marché de 3,2 MP FONCTIONNE TRÈS BIEN !! Mieux que le miroir chaud fourni avec l'appareil photo plus de canal rouge plus de lumière - vitesse d'obturation plus élevée. un arrêt supplémentaire.\"\u003c\/em\u003e \u003cstrong\u003eLuc Gale\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eLe seul bloqueur infrarouge dans cette gamme de prix doté d'un substrat planoptiquement poli, parallèle à moins de 30 secondes d'arc !\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eReflète le rayonnement thermique destructeur !\u003c\/li\u003e\n\n\u003cli\u003eProtège vos précieux équipements d'observation solaire tels que les filtres DAYSTAR et similaires contre le stress thermique excessif (c'est-à-dire la cuisson du liquide d'immersion !)\u003c\/li\u003e\n\n\u003cli\u003eReste frais et ne se brisera pas s'il est soumis à de fortes contraintes thermiques, car même un rayonnement intensif n'est pas absorbé - comme avec les \"filtres de protection contre la chaleur\" ordinaires, tels que KG-3 ou KG-5. L'énergie est réfléchie grâce à un système d'interférence élaboré de 23 couches de revêtement diélectrique.\u003c\/li\u003e\n\n\u003cli\u003eMoyenne de transmission de 98 % sur tout le spectre visible.\u003c\/li\u003e\n\n\u003cli\u003ePermet d'obtenir des images d'étoiles précises avec des équipements numériques et CCD.\u003c\/li\u003e\n\n\u003cli\u003eLes revêtements Ion-Beam IR-cut ultra-durs et durables peuvent être nettoyés à tout moment sans crainte. \u003c\/li\u003e\n\n\u003cli\u003eBords de revêtement scellés anti-vieillissement\u003c\/li\u003e\n\n\u003cli\u003e7 couches dures et absolument résistantes aux rayures - multicouches avec 0,3 % de réflexion résiduelle par rapport aux 4,6 % habituels d'un substrat non revêtu.\u003c\/li\u003e\n\n\u003cli\u003eAbsence d'images fantômes grâce à des revêtements de la plus haute qualité\u003c\/li\u003e\n\n\u003cli\u003eAvion optiquement poli ! Conserve la pleine résolution d'image même au grossissement le plus élevé pendant l'observation solaire ou la projection de l'oculaire.\u003c\/li\u003e\n\n\u003cli\u003eDisponible en taille 1¼\" et 2\"\u003c\/li\u003e\n\n\u003cli\u003ePetit prix\u003c\/li\u003e\n\n\u003cli\u003eFamille complète d'adaptateurs à monter dans (presque) le train optique de n'importe quel télescope - voir le système Astro T-2 SystemTM.\u003c\/li\u003e\n\n\u003cli\u003eOuverture claire plus grande que n'importe quel filtre concurrent de 1¼\" ou 2\".\u003c\/li\u003e\n\n\u003cli\u003eConception de cellule de filtre meilleure et plus élaborée que n'importe quel filtre concurrent, avec une «couronne» fraisée CNC pour faciliter la manipulation et la fixation. \u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"\/fr-us\/pages\/why-baader-planetarium-filters\"\u003ePourquoi les filtres de planétarium Baader ?\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"source=\" https:\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTransmission spectrale, filtre UV-IR-CUT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv data-custom-tab\u003e\n\n\u003cp data-custom-tab-title\u003eCaractéristiques\u003c\/p\u003e\n\n\u003cdiv\u003e\n\n\u003ch2\u003e1.25\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459207A\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825009012\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,059\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e1 25 pouces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e2\"\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459210A\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825008992 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,065\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCOULEUR\u003c\/th\u003e\n\n\u003ctd\u003eNoir\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e2 pouces\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eMonté (LPFC 6mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e31mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT \u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459208\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825023728\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,026\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n \u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e31 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e36mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459421\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825023728\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,026\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCOULEUR\u003c\/th\u003e\n\n\u003ctd\u003eNoir\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION \u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e2 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e36 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE \u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e50,4 mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459205\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825021373\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n \u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,07\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCOULEUR\u003c\/th\u003e\n\n\u003ctd\u003eNoir\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e50,4 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erond\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e50x50mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459206\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825021380\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,073\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCOULEUR\u003c\/th\u003e\n\n\u003ctd\u003eNoir\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR \u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e50 x 50 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE \u003c\/th\u003e\n\n\u003ctd\u003ecarré\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003e65x65mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459401\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825023643\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,087\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCOULEUR\u003c\/th\u003e\n\n\u003ctd\u003eNoir\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e65 x 65 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ecarré\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eGéant 101x142mm\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFABRICANT\u003c\/th\u003e\n\n\u003ctd\u003ePlanétarium Baader\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUGS (#)\u003c\/th\u003e\n\n\u003ctd\u003e2459203\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCODE EAN\u003c\/th\u003e\n\n\u003ctd\u003e4047825023803\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003ePOIDS (KG)\u003c\/th\u003e\n\n\u003ctd\u003e0,064\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eGAMME DE TRANSMISSION\u003c\/th\u003e\n\n\u003ctd\u003e420 – 680 nm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eÉPAISSEUR DU FILTRE (SANS CELLULE)\u003c\/th\u003e\n\n\u003ctd\u003e3 millimètres\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eREVÊTEMENT AR\u003c\/th\u003e\n\n\u003ctd\u003eà revêtement diélectrique, plan poli optiquement\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eCARACTÉRISTIQUES SPÉCIALES\u003c\/th\u003e\n\n\u003ctd\u003eTaille spéciale : 101x143x3mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTAILLE DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003e101 × 143 mm\u003c\/td\u003e\n\n \u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUTILISATION DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003eCoupe IR, Luminance, Coupe UV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFILTRE MONTÉ\u003c\/th\u003e\n\n\u003ctd\u003eNon monté\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eTYPE DE FILTRE\u003c\/th\u003e\n\n\u003ctd\u003ePasse-bande\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eUNIQUE OU ENSEMBLE ?\u003c\/th\u003e\n\n\u003ctd\u003eFiltre unique\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eFORME DU FILTRE\u003c\/th\u003e\n\n\u003ctd\u003erectangulaire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003eSUPPORTZ \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_baader_uv_ir_cut_filter.pdf?v=1684340728?v=1590143376\" target=\"_blank\"\u003eBrochure sur les filtres anti-UV\/IR Baader\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1684340622?v=1590138683\" target=\"_blank\"\u003eFAQ - Les problèmes avec les filtres peuvent avoir les causes les plus étranges\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_halos_no_problem.pdf?v=1684340636?v=1590141382\" target=\"_blank\"\u003eHalo - Pas de problème !\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_baader_anti_reflection_lrgbc_filters_j_schedler.pdf?v=1684340627?v=1590143376\" target=\"_blank\"\u003eRevue de test - Baader-Anti-Reflection LRGBC-Filters - J. Schedler\u003c\/a\u003e\u003c\/p\u003e \u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/t\/6\/assets\/description_image_testreview_ir_pass_uv_ir_comparison_w_paech_1.pdf?v=1684340733?v=1590143380\" target=\"_blank\"\u003eRevue de test - Comparaison IR-Pass \/ UV-IR - W. Paech\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Monté rond de 2\"","offer_id":44967365935389,"sku":"BAA-2961573","price":158.0,"currency_code":"CAD","in_stock":true},{"title":"1.25\" Round Mounted","offer_id":50170696204573,"sku":"BAA-2961570","price":95.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-UV-IR-CUT-L-Filter-1__54067.1597111001.1280.1280.jpg?v=1684341393"},{"product_id":"zwo-ir-850nm-pass-filter-1-25","title":"ZWO Filtre passe IR 850nm - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLaisse passer la lumière infrarouge \u0026gt; 850nm\u003c\/li\u003e\n\u003cli\u003eStabilise nettement les images planétaires par forte turbulence\u003c\/li\u003e\n\u003cli\u003ePermet l'imagerie planétaire et lunaire en plein jour\u003c\/li\u003e\n\u003cli\u003eBarillet fileté standard 1.25\" (31.75mm)\u003c\/li\u003e\n\u003cli\u003eBoîtier de protection en plastique inclus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eCaractéristiques\u003c\/li\u003e\n\u003cli\u003eDans la boîte\u003c\/li\u003e\n\u003cli\u003eTéléchargements\u003c\/li\u003e\n\u003cli\u003eGarantie\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Filtre IR Pass 850nm - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eLe filtre IR Pass 850nm de ZWO isole une portion précise du spectre proche infrarouge et ne transmet que les longueurs d'onde supérieures à 850nm. Monté dans un barillet fileté standard 1.25\" (31.75mm), ce filtre est un outil spécialisé pour l'imagerie planétaire et lunaire à haute résolution, qui contourne efficacement la turbulence atmosphérique qui brouille les détails dans le spectre visible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePasser outre la turbulence à 850nm\u003c\/h3\u003e\n\u003cp\u003eLa turbulence atmosphérique (le « seeing ») est le principal obstacle à la netteté des détails planétaires. Comme les grandes longueurs d'onde sont moins diffusées par les courants d'air, imager à 850nm et au-delà stabilise considérablement l'image. Vous pouvez ainsi résoudre des détails plus fins dans les bandes nuageuses de Jupiter, la division de Cassini dans les anneaux de Saturne et les petits cratères de la Lune, même par forte turbulence ou lorsque votre cible est basse sur l'horizon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImagerie planétaire en plein jour au-delà de 850nm\u003c\/h3\u003e\n\u003cp\u003eEn bloquant fermement toute la lumière visible sous 850nm, ce filtre rend le ciel de jour presque noir pour une caméra sensible à l'infrarouge. Cette capacité unique permet de photographier des planètes brillantes comme Vénus et Jupiter en plein jour. Vous obtenez une image très contrastée de la planète sur un fond sombre, sans l'éblouissement du ciel bleu.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO IR Pass 850nm ou 685nm : lequel choisir ?\u003c\/h3\u003e\n\u003cp\u003eZWO propose plusieurs filtres IR Pass, et le choix dépend de vos conditions et de votre caméra. Le filtre 850nm est le plus spécialisé des deux options les plus courantes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO IR Pass 685nm :\u003c\/strong\u003e ce filtre laisse passer plus de lumière vers le capteur, ce qui donne une image plus lumineuse et des temps de pose plus courts. C'est un excellent choix polyvalent pour améliorer les détails par turbulence moyenne à forte, et il fonctionne bien avec un plus large éventail de caméras monochromes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO IR Pass 850nm :\u003c\/strong\u003e ce filtre est l'arme ultime contre la turbulence. Lorsque les conditions sont exceptionnellement turbulentes, la bande passante au-delà de 850nm offre l'image la plus stable possible. En contrepartie, le signal est nettement plus faible, ce qui exige une caméra très sensible à l'infrarouge et parfois un gain plus élevé pour faire la mise au point et capturer les données.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConçu pour les caméras sensibles à l'infrarouge dans un barillet 1.25\"\u003c\/h3\u003e\n\u003cp\u003eCe filtre est conçu pour l'astrophotographie avec une caméra monochrome ou couleur sensible à l'infrarouge ; l'œil humain n'est pas sensible à la lumière à 850nm, il ne peut donc pas servir à l'observation visuelle. Ses performances dépendent directement de l'efficacité quantique de votre caméra dans le proche infrarouge. Pour de meilleurs résultats, associez le filtre IR Pass 850nm de ZWO à une caméra monochrome reconnue pour sa bonne réponse dans l'infrarouge. Le barillet fileté standard 1.25\" (31.75mm) s'adapte à toute roue à filtres ou tout coulant 1.25\" standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eComment le filtre 850nm de ZWO améliore-t-il l'imagerie de Jupiter par une nuit turbulente ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePar forte turbulence, l'atmosphère terrestre brouille les fins détails des planètes comme Jupiter. Le filtre 850nm de ZWO bloque les longueurs d'onde visibles plus courtes, plus facilement diffusées, et ne laisse passer que la lumière infrarouge de plus grande longueur d'onde, plus stable. L'image sur votre capteur est ainsi beaucoup plus stable, ce qui vous permet de capturer des détails plus nets dans la Grande Tache rouge et les bandes nuageuses équatoriales, qui ne seraient autrement qu'un amas scintillant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003ePuis-je utiliser le filtre IR Pass 850nm de ZWO avec ma caméra astronomique couleur pour photographier la Lune ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOui, si la caméra a une bonne sensibilité dans le proche infrarouge. Au-delà de 850nm, les pixels rouges, verts et bleus d'un capteur couleur répondent de façon presque identique ; ZWO indique donc qu'une caméra couleur comme l'ASI224MC ou l'ASI185MC peut être utilisée comme une caméra monochrome avec ce filtre (gardez la balance des blancs à 50). Le signal est faible : une caméra à forte réponse infrarouge, monochrome ou couleur, donne les meilleurs résultats.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eLe filtre 850nm de ZWO convient-il à l'observation visuelle ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNon. L'œil humain ne peut pas voir la lumière à une longueur d'onde de 850nm. En regardant dans un oculaire équipé de ce filtre, vous verrez un champ complètement noir. C'est un outil spécialisé conçu exclusivement pour une caméra astronomique sensible à l'infrarouge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eQuelle est la principale différence entre le filtre IR Pass 850nm de ZWO et un filtre IR Pass 685nm ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLa principale différence tient à la fermeté avec laquelle ils coupent la lumière visible.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUn \u003cstrong\u003efiltre 685nm\u003c\/strong\u003e est un bon choix polyvalent, qui atténue nettement les effets de la turbulence avec un signal relativement lumineux.\u003c\/li\u003e\n\u003cli\u003eLe \u003cstrong\u003efiltre 850nm\u003c\/strong\u003e offre une stabilisation maximale dans les conditions les plus turbulentes, mais laisse passer beaucoup moins de lumière et exige une caméra très sensible à l'infrarouge et des poses plus longues ou un gain plus élevé.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003ePourquoi photographier les planètes en plein jour avec le filtre 850nm de ZWO ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eImager en plein jour permet de capturer les planètes lorsqu'elles sont au plus haut dans le ciel, là où la distorsion atmosphérique est minimale. Le filtre 850nm de ZWO le rend possible en bloquant la lumière visible qui donne au ciel sa couleur bleue, ce qui crée un fond sombre pour votre caméra et permet de photographier des planètes brillantes comme Vénus ou Jupiter avec un fort contraste.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eLe filtre 850nm de ZWO nécessite-t-il une roue à filtres ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNon, une roue à filtres n'est pas nécessaire. Le barillet 1.25\" du filtre est fileté pour se visser directement sur tout coulant 1.25\" de caméra ou accessoire standard. Cependant, l'utiliser dans une roue à filtres permet de passer facilement du filtre 850nm à d'autres filtres (comme LRGB) sans démonter votre train optique.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRéférence (SKU)\u003c\/td\u003e\n\u003ctd\u003eZWO-850IR1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType de filtre\u003c\/td\u003e\n\u003ctd\u003eIR Pass \/ luminance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTaille\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eFileté, rond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBande passante\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 850nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFiltre IR Pass 850nm ZWO en barillet 1.25\"\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBoîtier de filtre en plastique\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTélécharger les logiciels\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/fr\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eGarantie limitée ZWO de 2 ans\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":44967439859997,"sku":"ZWO-850IR1-25","price":40.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-IR-850nm-Pass-Filter-1-25-inch-1__82864.1596910056.1280.1280.jpg?v=1684341991"},{"product_id":"zwo-uv-ir-cut-filter","title":"ZWO Filtre UV\/IR CUT","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSe visse dans les porte-filtres et coulants 1.25\" standards\u003c\/li\u003e\n\u003cli\u003eBloque les longueurs d'onde ultraviolettes (UV) et infrarouges (IR) indésirables\u003c\/li\u003e\n\u003cli\u003eSert de filtre de luminance (L) principal en imagerie LRGB\u003c\/li\u003e\n\u003cli\u003eIndispensable pour obtenir une mise au point nette avec les caméras couleur CMOS et CCD\u003c\/li\u003e\n\u003cli\u003eLivré avec un étui de rangement de protection en plastique\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eCaractéristiques\u003c\/li\u003e\n\u003cli\u003eDans la boîte\u003c\/li\u003e\n\u003cli\u003eTéléchargements\u003c\/li\u003e\n\u003cli\u003eGarantie\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Filtre IR-cut 1.25\"\u003c\/h2\u003e\n\u003cp\u003eLe filtre IR-cut 1.25\" de ZWO est un élément indispensable pour toute caméra astronomique couleur : il se visse directement dans un coulant ou une roue à filtres standard de 31.75mm. Couvert par une garantie ZWO de 2 ans, ce filtre corrige les étoiles gonflées et la perte de détails en bloquant la lumière infrarouge non focalisée que votre capteur voit, mais que votre œil ne perçoit pas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRetrouver la netteté de l'image en 1.25\"\u003c\/h3\u003e\n\u003cp\u003eLa sensibilité d'un capteur au silicium s'étend bien au-delà de ce que l'œil humain peut voir, loin dans le spectre infrarouge (IR). L'optique de votre télescope est conçue pour focaliser nettement la lumière visible, mais elle ne focalise pas la lumière IR au même point. Il en résulte une image visible nette superposée à une image IR douce et floue, ce qui donne des détails flous et des étoiles gonflées. Le filtre UV\/IR-cut 1.25\" de ZWO règle ce problème en bloquant complètement ces longueurs d'onde indésirables, et vous rend toute la netteté que votre optique est capable d'offrir.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eProtection IR essentielle pour les systèmes d'imagerie 31.75mm\u003c\/h3\u003e\n\u003cp\u003eCe filtre joue un double rôle essentiel dans toute configuration d'astrophotographie. Pour une caméra couleur, c'est la principale protection contre la contamination IR, nécessaire pour des couleurs fidèles et une mise au point nette. Pour les astrophotographes en monochrome, ce filtre constitue votre couche de luminance (L) dans un jeu de filtres LRGB et capture tous les détails du spectre visible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eLe filtre UV\/IR-cut 1.25\" de ZWO améliorera-t-il mes images de Jupiter avec une caméra ZWO ASI224MC ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOui, tout à fait. L'imagerie planétaire repose sur la capture des plus fins détails possibles. Comme votre caméra est très sensible à la lumière IR que votre télescope ne focalise pas nettement, ce filtre élimine le flou qui en résulte, pour des images beaucoup plus nettes des bandes nuageuses de Jupiter et de la Grande Tache rouge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAi-je besoin du filtre UV\/IR-cut 1.25\" de ZWO pour photographier la galaxie d'Andromède (M31) en ciel profond avec ma caméra couleur ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOui. L'effet peut être plus subtil que sur les planètes, mais il reste essentiel pour des images du ciel profond de qualité. Le filtre resserre les étoiles sur toute l'image et améliore la netteté finale des bandes de poussière et de la structure galactique en éliminant le signal IR doux et non focalisé qui noierait autrement les fins détails.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eQuelle est la différence entre ce filtre UV\/IR-cut de ZWO et un filtre de luminance ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePour la plupart des usages en astrophotographie, ils sont fonctionnellement identiques. Le rôle principal d'un \u003cstrong\u003efiltre de luminance (L)\u003c\/strong\u003e est de laisser passer tout le spectre visible tout en bloquant l'ultraviolet (UV) et l'infrarouge (IR). Ce filtre UV\/IR-cut 1.25\" de ZWO remplit exactement cette fonction, ce qui en fait le bon choix comme filtre L dans une séquence d'imagerie LRGB.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMa caméra a une fenêtre AR. Ai-je quand même besoin du filtre UV\/IR-cut 1.25\" de ZWO ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOui. Une fenêtre \u003cstrong\u003eantireflet (AR)\u003c\/strong\u003e est conçue uniquement pour maximiser la transmission de la lumière et éviter les reflets internes. Elle ne bloque \u003cstrong\u003epas\u003c\/strong\u003e les longueurs d'onde IR. Il vous faut quand même un filtre UV\/IR-cut séparé pour éviter le gonflement dû à l'IR et obtenir une image nette.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003ePuis-je utiliser le filtre UV\/IR-cut 1.25\" de ZWO en observation visuelle ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOui, mais vous ne remarquerez aucune différence à l'oculaire. L'œil humain n'est pas sensible à la lumière infrarouge que ce filtre bloque. Son effet sur la netteté n'apparaît qu'avec un capteur de caméra au silicium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eComment fixer le filtre UV\/IR-cut 1.25\" de ZWO sur ma caméra ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLe filtre est monté dans une cellule filetée 1.25\" standard. Vous pouvez le visser directement sur le coulant 1.25\" de votre caméra astronomique ou dans un emplacement dédié d'une roue à filtres 1.25\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRéférence (SKU)\u003c\/td\u003e\n\u003ctd\u003eZWO-IRCUT1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatégorie de filtre\u003c\/td\u003e\n\u003ctd\u003eFiltre individuel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType de filtre\u003c\/td\u003e\n\u003ctd\u003eUV\/IR-cut \/ luminance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTaille\u003c\/td\u003e\n\u003ctd\u003e1.25\" (31.75mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForme\u003c\/td\u003e\n\u003ctd\u003eRond\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMontage\u003c\/td\u003e\n\u003ctd\u003eCellule filetée\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGarantie\u003c\/td\u003e\n\u003ctd\u003e2 ans\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFiltre ZWO bloquant l'IR en cellule 1.25\"\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eÉtui à filtre en plastique\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTélécharger le logiciel\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/fr\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eGarantie limitée ZWO de 2 ans\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Monté rond de 1,25 po","offer_id":44967447920925,"sku":"ZWO-IRCUT1.25","price":40.0,"currency_code":"CAD","in_stock":true},{"title":"Monté rond de 2\"","offer_id":44967447953693,"sku":"ZWO-IRCUT2","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-UV-IR-CUT-Filter-1-25-inch-1__13605.1596910062.1280.1280.jpg?v=1684342154"},{"product_id":"zwo-ar-protective-window","title":"ZWO Fenêtre de protection AR","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProtège le capteur de la caméra de la poussière et de l'humidité\u003c\/li\u003e\n\u003cli\u003eDiamètre de 21mm pour certains modèles de caméras ZWO\u003c\/li\u003e\n\u003cli\u003eTraitements antireflet (AR) à haute transmission\u003c\/li\u003e\n\u003cli\u003ePlanéité de surface de 1\/4λ pour préserver la qualité d'image\u003c\/li\u003e\n\u003cli\u003eÉpaisseur de 1.1mm sans modification du backfocus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eCaractéristiques\u003c\/li\u003e\n\u003cli\u003eDans la boîte\u003c\/li\u003e\n\u003cli\u003eGarantie\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Fenêtre de protection AR D21\u003c\/h2\u003e\n\u003cp\u003eLa fenêtre AR ZWO D21 offre une protection essentielle au capteur, avec une planéité de surface optiquement précise de 1\/4λ pour préserver la netteté de l'image. Son diamètre de 21mm et sa faible épaisseur de 1.1mm assurent un ajustement parfait dans les caméras ZWO compatibles, et ses traitements antireflet à haute transmission protègent le capteur de la poussière et de l'humidité sans modifier le chemin optique.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUne protection transparente avec une planéité de 1\/4λ\u003c\/h3\u003e\n\u003cp\u003eCette fenêtre forme une barrière transparente et protectrice entre le capteur délicat de votre caméra et l'environnement extérieur. La planéité de surface de 1\/4λ garantit que les surfaces de la fenêtre sont optiquement planes, ce qui l'empêche d'introduire de la distorsion, de l'astigmatisme ou d'autres aberrations dans vos images. C'est une assurance pour votre capteur, sans effet détectable sur la qualité optique.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUn ajustement parfait avec un diamètre de 21mm\u003c\/h3\u003e\n\u003cp\u003eConçue comme pièce de remplacement directe ou comme protection supplémentaire, la fenêtre de 21mm de diamètre s'adapte à de nombreuses caméras ZWO populaires, notamment les séries ASI120, ASI224, ASI290, ASI178 et ASI385. Ce dimensionnement précis lui permet de se loger correctement dans le boîtier de la caméra et d'assurer une étanchéité complète contre les contaminants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUn effet optique minimal avec une épaisseur de 1.1mm\u003c\/h3\u003e\n\u003cp\u003eAvec seulement 1.1mm d'épaisseur et des traitements antireflet (AR) sur ses deux faces, cette fenêtre est conçue pour être pratiquement invisible sur le trajet de la lumière de votre télescope. Les traitements AR maximisent la transmission lumineuse et éliminent les reflets fantômes des étoiles brillantes. L'épaisseur de 1.1mm correspond à celle des fenêtres d'origine, ce qui vous permet de conserver le bon backfocus sans bague allonge ni réglage supplémentaire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eÀ quoi sert principalement la fenêtre AR ZWO D21 ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eElle sert de protection pour le capteur de votre caméra. Elle protège le capteur délicat de la poussière, de l'humidité et d'un éventuel contact physique sans dégrader la qualité d'image, grâce à sa planéité de 1\/4λ et à ses traitements AR.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eQuelles caméras ZWO utilisent la fenêtre AR D21 ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLa fenêtre AR D21 est compatible avec plusieurs caméras ZWO, notamment les modèles \u003cstrong\u003eASI120MM\/MM-S, ASI224MC, ASI385MC, ASI290MC\/MM, ASI290MINI, ASI178MM et ASI120MINI\u003c\/strong\u003e. Vérifiez toujours votre modèle de caméra avant l'achat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eL'installation de la fenêtre AR D21 modifie-t-elle mon point de mise au point ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNon. Avec une épaisseur de seulement 1.1mm, elle est conçue pour être optiquement neutre et correspondre à la fenêtre d'origine des caméras compatibles. Votre point de mise au point et votre backfocus devraient rester inchangés.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eComment installer la fenêtre AR ZWO D21 sur mon ASI290MM Mini ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eL'installation consiste à dévisser délicatement le coulant avant de la caméra pour accéder à la chambre du capteur. L'ancienne fenêtre (le cas échéant) peut être retirée doucement, puis la nouvelle fenêtre AR D21 est déposée à sa place. Travaillez dans un environnement aussi exempt de poussière que possible pendant l'opération.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003ePuis-je utiliser la fenêtre AR D21 à la place d'un filtre UV\/IR-cut pour l'imagerie planétaire avec mon ASI224MC ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNon, ce n'est pas un filtre. La D21 est une fenêtre transparente à traitement AR conçue pour la protection et une transmission lumineuse maximale. Pour l'imagerie planétaire avec une caméra couleur comme l'ASI224MC, il vous faut toujours un \u003cstrong\u003efiltre UV\/IR-cut (luminance)\u003c\/strong\u003e séparé pour obtenir une balance des couleurs et une netteté correctes, car le capteur est sensible à la lumière hors bande.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eComment nettoyer la fenêtre AR ZWO D21 ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTraitez-la comme toute optique de qualité. Utilisez d'abord une poire soufflante propre pour retirer la poussière libre. Pour les traces de doigts ou les taches, utilisez un chiffon en microfibre avec un peu de solution de nettoyage optique dédiée. Essuyez doucement par mouvements circulaires, du centre vers l'extérieur, pour éviter de rayer les traitements AR.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRéférence (SKU)\u003c\/td\u003e\n\u003ctd\u003eZWO-D21AR1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiamètre\u003c\/td\u003e\n\u003ctd\u003e21 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eÉpaisseur\u003c\/td\u003e\n\u003ctd\u003e1.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlanéité de surface\u003c\/td\u003e\n\u003ctd\u003e1\/4 λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eFenêtre de protection à traitement AR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFenêtre AR D21\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/fr\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eGarantie ZWO de 2 ans\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"21mm","offer_id":44967448609053,"sku":"ZWO-D21AR","price":26.0,"currency_code":"CAD","in_stock":true},{"title":"25mm","offer_id":44967448641821,"sku":"ZWO-D25AR","price":26.0,"currency_code":"CAD","in_stock":true},{"title":"60mm","offer_id":44967448674589,"sku":"ZWO-D60AR","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Protective-Window-1__97293.1596910060.1280.1280.jpg?v=1684342186"},{"product_id":"zwo-ir-cut-protective-window","title":"ZWO Fenêtre de protection IR-cut","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFenêtre de protection de 21 mm de diamètre pour certaines caméras ZWO\u003c\/li\u003e\n\u003cli\u003eLe filtre UV\/IR-cut intégré préserve un équilibre des couleurs naturel\u003c\/li\u003e\n\u003cli\u003ePlanéité de surface de 1\/4 λ qui préserve la netteté de l'image\u003c\/li\u003e\n\u003cli\u003eÉpaisseur de 1.1 mm pour un chemin optique correct\u003c\/li\u003e\n\u003cli\u003eProtège la chambre du capteur de la poussière et de l'humidité\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eCaractéristiques\u003c\/li\u003e\n\u003cli\u003eDans la boîte\u003c\/li\u003e\n\u003cli\u003eTéléchargements\u003c\/li\u003e\n\u003cli\u003eGarantie\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO Fenêtre IR-cut D21\u003c\/h2\u003e\n\u003cp\u003eLa fenêtre IR-cut ZWO D21 est un élément optique poli avec précision, conçu pour protéger le capteur de votre caméra, avec un diamètre de 21 mm et une épaisseur standard de 1.1 mm. Son filtre UV\/IR-cut intégré préserve un équilibre des couleurs fidèle, tandis que la planéité de surface de 1\/4 λ garantit que la fenêtre ne dégrade en rien la netteté de votre image finale.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptique de précision : planéité de 1\/4 λ pour une épaisseur de 1.1 mm\u003c\/h3\u003e\n\u003cp\u003eIl ne s'agit pas d'un simple morceau de verre, mais d'un composant optique essentiel. La fenêtre ZWO D21 est rodée et polie à une planéité de surface de 1\/4 λ, une caractéristique qui garantit sa transparence optique et l'absence de déformation du front d'onde provenant de votre télescope. Les plus fins détails des surfaces planétaires sont ainsi préservés et les étoiles restent fines et ponctuelles. L'épaisseur de 1.1 mm est standard sur les caméras ZWO, ce qui garantit l'absence de changement de backfocus lors du remplacement d'une fenêtre d'origine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eProtection d'origine : 21 mm de diamètre avec UV\/IR-cut\u003c\/h3\u003e\n\u003cp\u003eConçue comme pièce de remplacement d'origine, la fenêtre de 21 mm de diamètre scelle parfaitement la chambre du capteur des caméras ZWO compatibles contre la poussière, le pollen et l'humidité. Le traitement UV\/IR-cut intégré est indispensable pour toutes les caméras couleur, car il bloque les longueurs d'onde infrarouges et ultraviolettes hors mise au point, auxquelles les capteurs CMOS sont très sensibles. Cela évite le gonflement des étoiles et produit une image propre aux couleurs fidèles, sans filtre séparé.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMontage direct :\u003c\/strong\u003e remplace la fenêtre d'origine des caméras ASI120MC-S et ASI178MC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltration essentielle :\u003c\/strong\u003e sert de filtre IR-cut intégré pour les caméras couleur, en corrigeant la sensibilité infrarouge du capteur pour produire des couleurs naturelles sur des cibles comme la Grande Tache rouge de Jupiter ou les calottes polaires de Mars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSécurité du capteur :\u003c\/strong\u003e forme une barrière physique qui protège le capteur CMOS délicat et ses microlentilles des contacts physiques et des contaminants de l'environnement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eQuelles caméras ZWO sont compatibles avec la fenêtre IR-cut D21 ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLa fenêtre IR-cut ZWO D21 remplace directement la fenêtre d'origine des séries de caméras suivantes : \u003cstrong\u003eASI120MC-S et ASI178MC.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003ePourquoi une planéité de 1\/4 λ est-elle importante pour la fenêtre ZWO D21 ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUne planéité de \u003cstrong\u003e1\/4 λ (quart d'onde)\u003c\/strong\u003e garantit que la fenêtre est optiquement parfaite et ne courbe ni ne déforme la lumière qui la traverse vers le capteur. Une fenêtre moins plane agirait comme une lentille de mauvaise qualité, adoucissant l'image et réduisant les fins détails que votre télescope résout. Cette précision est essentielle pour l'imagerie planétaire, lunaire et solaire à haute résolution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eLa fenêtre IR-cut ZWO D21 est-elle nécessaire pour les caméras monochromes ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNon. ZWO n'indique la fenêtre IR-cut D21 que pour les caméras couleur ASI120MC-S et ASI178MC. Les caméras monochromes comme l'ASI290MM ou l'ASI178MM utilisent la fenêtre AR D21, qui protège le capteur de la poussière et de l'humidité sans bloquer l'IR.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eSi je vois des poussières sur mes images prises avec l'ASI224MC, dois-je remplacer cette fenêtre ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePas nécessairement. Commencez par nettoyer la surface extérieure de la fenêtre avec un kit de nettoyage de capteur ou une poire soufflante. Si les poussières restent fixes au même endroit sur vos flats après le nettoyage, elles se trouvent probablement sur le capteur lui-même, ce qui peut nécessiter de retirer la fenêtre pour un nettoyage plus poussé. Ne remplacez la fenêtre que si elle est rayée, fissurée ou si ses traitements sont dégradés.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eLa fenêtre IR-cut ZWO D21 modifiera-t-elle ma mise au point lorsque je photographie la Lune avec mon ASI2600MC Pro ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNon, elle ne modifiera pas votre mise au point. La ZWO D21 est conçue pour être parfocale avec la fenêtre d'origine installée en usine dans la caméra. Avec son épaisseur de 1.1 mm, elle conserve le chemin optique correct : vous pouvez donc remplacer une fenêtre endommagée sans changer la position de votre porte-oculaire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eComment savoir si la fenêtre de protection de ma caméra ZWO est endommagée ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLes dommages peuvent être physiques ou provenir d'une dégradation des traitements. Recherchez des rayures ou des fissures évidentes. Une défaillance du traitement peut se manifester par des marbrures ou un voile sur le verre qui ne partent pas au nettoyage. Ces problèmes apparaîtront sur vos images sous forme d'artefacts fixes ou d'une perte générale de contraste que les flats ne peuvent pas corriger.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRéférence (SKU)\u003c\/td\u003e\n\u003ctd\u003eZWO-D21IR-CUT1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiamètre\u003c\/td\u003e\n\u003ctd\u003e21 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType de filtre\u003c\/td\u003e\n\u003ctd\u003eFenêtre de protection UV\/IR-cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eÉpaisseur\u003c\/td\u003e\n\u003ctd\u003e1.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlanéité de surface\u003c\/td\u003e\n\u003ctd\u003e1\/4 λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGarantie\u003c\/td\u003e\n\u003ctd\u003e2 ans\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFenêtre IR-cut D21\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTélécharger le logiciel\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/fr\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eGarantie limitée ZWO de 2 ans\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"21mm","offer_id":44967449723165,"sku":"ZWO-D21IR-CUT1","price":26.0,"currency_code":"CAD","in_stock":true},{"title":"25mm","offer_id":44967449755933,"sku":"ZWO-D25IR-CUT1","price":26.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/ZWO-Protective-Window-1__97293.1596910060.1280.1280__39733.1596912514.1280.1280.jpg?v=1684342198"},{"product_id":"optolong-uv-ir-cut-filter","title":"Filtre anti-UV\/IR Optolong","description":"\u003c!-- more --\u003e\u003cp\u003e Le filtre Optolong UV\/IR Cut est conçu pour le blocage des longueurs d'onde ultraviolettes et infrarouges afin d'améliorer la netteté de l'image car la plupart des optiques sont conçues pour le spectre visible, car il est très difficile de créer une lentille avec le même point focal pour le visible et l'IR spectre.\u003cbr\u003e Il est utilisé sur un appareil photo numérique et la vidéo, qui n'ont pas de filtre de protection IR vers un capteur d'image ou qui ont été remodelés. Ceci est important car les capteurs CCD et CMOS non filtrés sont extrêmement sensibles aux rayons UV et IR juste en dehors du spectre visible, ce qui peut avoir un impact très négatif sur la qualité de l'image.\u003cbr\u003e Utilisation principale et performances\u003cbr\u003e Convient aux caméras couleur CMOS et CCD et aux reflex numériques modifiés.\u003cbr\u003e À utiliser avec un CCD monochrome pour l'astrophotographie. \u003cbr\u003eDisponible pour aider à la mise au point.\u003cbr\u003e Agit comme un pare-poussière exceptionnel, qui empêche la possibilité de dépôt de poussière sur l'objectif pendant une exposition prolongée.\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25\" Monté","offer_id":44968071528733,"sku":"OPT-10601","price":62.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Monté","offer_id":44968071561501,"sku":"OPT-10602","price":91.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted","offer_id":52942348583197,"sku":"OPT-10604","price":77.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Optolong-UV-IR-Cut-2__28842.1673896686.1280.1280.jpg?v=1684348673"},{"product_id":"antlia-ir-pass-685nm-filter-1-25","title":"Antlia Filtre IR-Pass 685nm - 1.25\"","description":"\u003c!-- more --\u003e\n \u003cp\u003eLe filtre Antlia IR Pass 685 nm est un filtre absorbant qui laisse passer la lumière infrarouge avec des longueurs d'onde supérieures à 685 nm. À ces longueurs d’onde plus longues, la sensibilité de l’œil nu est réduite et ne convient donc pas aux observations visuelles. Le filtre est fortement recommandé pour toute photographie planétaire. Dans la plage spectrale des grandes longueurs d'onde, la turbulence de l'air atmosphérique (vision) a un impact beaucoup plus faible sur la netteté. Plus la bande infrarouge est proche, plus les images planétaires sont moins perturbées par les distorsions du front d'onde dans l'atmosphère (vision), ce qui donne l'image la plus nette et la plus contrastée possible.\u003c\/p\u003e\n\n\u003cp\u003e En combinant une image de luminance prise avec le filtre IR-Pass, ainsi que les filtres RVB et U-Venus, l'image globale\u003c\/p\u003e\n\n\u003cp\u003e la netteté est considérablement améliorée et les détails des planètes dans différentes bandes sont capturés.\u003c\/p\u003e\n\n\u003cp\u003e Le filtre est également possible d'imager les autres planètes à la lumière du jour grâce au ciel de fond sombre créé par le filtre passe IR 685 nm.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eDonnées techniques:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e Substrat optique Schott\u003c\/p\u003e\n\n \u003cp\u003e1,25\" monté, (2 mm+\/-0,05 mm)\u003c\/p\u003e\n\n\u003cp\u003e Qualité de surface : 60\/40 (voir MIL-O-13830)\u003c\/p\u003e\n\n\u003cp\u003e 2 côtés finement polis optiquement pour garantir un front d'onde précis de 1\/4\u003c\/p\u003e\n\n\u003cp\u003e parallélisme de 30 arcsec\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eBague filtrante :\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e 1,25\"(28,5*0,6)\u003c\/p\u003e\n\n\u003cp\u003e Cellule filtrante ultra fine pour minimiser le vignettage en maximisant l'ouverture claire possible\u003c\/p\u003e\n\n\u003cp\u003e Finition anodisée noire\u003c\/p\u003e\n\n\u003cp\u003e Gravure au laser sans décoloration\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eNon recommandé:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e Observation et imagerie solaire\u003c\/p\u003e\n\n\u003cp\u003e L'observation visuelle\u003c\/p\u003e\n\n\u003cp\u003e NE REGARDEZ PAS LE SOLEIL AVEC LES FILTRES ANTLIA.\u003c\/p\u003e\n\n\u003cp\u003e De graves lésions oculaires peuvent survenir si vous ne respectez pas cet avertissement.\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":45077998862621,"sku":"ANT-IR685","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Antlia-IR-Pass-685nm-Filter.jpg?v=1685814630"},{"product_id":"antlia-ir-pass-850nm-filter-1-25","title":"Antlia Filtre IR-Pass 850nm - 1.25\"","description":"\u003c!-- more --\u003e\n \u003cp\u003eLe filtre Antlia IR Pass 850 nm est un filtre absorbant qui laisse passer la lumière infrarouge avec des longueurs d'onde supérieures à 850 nm. Il s'agit d'un filtre supplémentaire IR Pass 685 nm. À ces longueurs d’onde plus longues, la sensibilité de l’œil nu est réduite et ne convient donc pas aux observations visuelles. Le filtre est fortement recommandé pour toute photographie planétaire. Dans la plage spectrale des grandes longueurs d'onde, la turbulence de l'air atmosphérique (vision) a un impact beaucoup plus faible sur la netteté. Plus la bande infrarouge est proche, plus les images planétaires sont moins perturbées par les distorsions du front d'onde dans l'atmosphère (vision), ce qui donne l'image la plus nette et la plus contrastée possible.\u003c\/p\u003e\n\n\u003cp\u003e En combinant une image de luminance prise avec le filtre IR-Pass, ainsi que les filtres RVB et U-Venus, la netteté globale de l'image est considérablement améliorée et les détails des planètes dans différentes bandes sont capturés. Le filtre est également possible d'imager les autres planètes à la lumière du jour grâce au ciel de fond sombre créé par le filtre passe IR 850 nm.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eDonnées techniques:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e Substrat optique Schott\u003c\/p\u003e\n\n\u003cp\u003e 1,25\" monté, (2 mm+\/-0,05 mm)\u003c\/p\u003e\n\n\u003cp\u003e Qualité de surface : 60\/40 (voir MIL-O-13830)\u003c\/p\u003e\n\n\u003cp\u003e 2 côtés finement polis optiquement pour garantir un front d'onde précis de 1\/4\u003c\/p\u003e\n\n\u003cp\u003e parallélisme de 30 arcsec\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eBague filtrante :\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e 1,25\"(28,5*0,6)\u003c\/p\u003e\n\n\u003cp\u003e Cellule filtrante ultra fine pour minimiser le vignettage en maximisant l'ouverture claire possible\u003c\/p\u003e\n\n\u003cp\u003e Finition anodisée noire\u003c\/p\u003e\n\n\u003cp\u003e Gravure au laser sans décoloration\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eNon recommandé:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e Observation et imagerie solaire\u003c\/p\u003e\n\n\u003cp\u003e L'observation visuelle\u003c\/p\u003e\n\n\u003cp\u003e NE REGARDEZ PAS LE SOLEIL AVEC LES FILTRES ANTLIA.\u003c\/p\u003e\n\n\u003cp\u003e De graves lésions oculaires peuvent survenir si vous ne respectez pas cet avertissement.\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":45078000140573,"sku":"ANT-IR850","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Antlia-IR-Pass-850nm-Filter.jpg?v=1685814767"},{"product_id":"optolong-ir-pass-685nm-planetary-filter","title":"Optolong IR Pass 685nm Planetary Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses infrared light above 685nm\u003c\/li\u003e\n\u003cli\u003eAchieves greater than 90% peak transmission\u003c\/li\u003e\n\u003cli\u003eBlocks wavelengths from 350-1050nm outside the passband\u003c\/li\u003e\n\u003cli\u003e1.85mm thick B270 substrate\u003c\/li\u003e\n\u003cli\u003eSurface quality of 60\/40 with λ\/4 transmitted wavefront\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eOptolong IR Pass 685nm Planetary Filter\u003c\/h2\u003e\n\u003cp\u003eThe Optolong IR Pass 685nm Planetary Filter isolates the near-infrared region of the spectrum, transmitting wavelengths longer than 685nm with over 90% efficiency. Built on a 1.85mm B270 substrate, this filter leverages the fact that atmospheric turbulence has less effect on longer wavelengths of light, allowing your camera's sensor to capture a significantly steadier image. The filter maintains a λ\/4 transmitted wavefront and a 60\/40 surface quality, ensuring it reveals fine planetary detail without degrading your telescope's native optical resolution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eStabilizing Planetary Views with a 685nm IR Cut-On\u003c\/h3\u003e\n\u003cp\u003eAtmospheric seeing, the blurring caused by air currents, is the primary obstacle to high-resolution planetary imaging. The Optolong IR Pass 685nm filter acts as a powerful tool to mitigate this effect by blocking visible light and passing only near-infrared light, which is less susceptible to atmospheric distortion. This results in a much sharper, higher-contrast monochrome image that can serve as a powerful luminance layer (an \"IR-LRGB\" composite) for your final color image.\u003c\/p\u003e\n\u003cp\u003eWhen imaging planets like Jupiter, Saturn, or Mars, using the 685nm IR Pass as your luminance channel captures fine details in cloud bands and surface features that are often lost in the turbulence of a standard LRGB sequence. Your CMOS or CCD sensor, sensitive to light from 350-1050nm, can take full advantage of this stable IR signal to produce results that cut through poor seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eλ\/4 Wavefront and \u0026gt;90% Transmission Coatings\u003c\/h3\u003e\n\u003cp\u003eOptolong constructs the IR Pass 685nm filter with exacting optical standards to preserve the integrity of your image. A transmitted wavefront of λ\/4 and parallelism of 30 arcseconds guarantee that the filter will not introduce aberrations or distortions into your optical train. The advanced multi-layer coatings, applied using an ion-assisted deposition process, achieve greater than 90% transmission in the target passband while delivering deep \u0026gt;99% blocking of light pollution lines and other unwanted wavelengths.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate and Thickness:\u003c\/strong\u003e The 1.85mm B270 glass substrate ensures parfocality with other filters of similar thickness, minimizing the need to refocus when switching filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Coatings:\u003c\/strong\u003e The ion-assisted coating process produces a hard, scratch-resistant surface that is stable and will not degrade over time or with changes in temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Quality:\u003c\/strong\u003e A 60\/40 surface quality specification meets military standards, ensuring a clean and defect-free optical surface for maximum image contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Optolong IR Pass 685nm filter for planets?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary advantage is \u003cstrong\u003ereducing the effect of atmospheric turbulence (seeing)\u003c\/strong\u003e. Longer wavelengths of light, like the infrared light passed by this filter, are less distorted by the atmosphere. This allows you to capture a much sharper, steadier image of planets, which can be used as a high-detail luminance layer to dramatically improve your final color planetary photos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Optolong IR Pass 685nm filter improve my images of Jupiter with an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn a typical night of average seeing, an 8\" SCT can resolve significant detail on Jupiter, but this detail is often blurred by the atmosphere. The Optolong IR Pass 685nm filter will produce a monochrome image that is noticeably sharper than what you'd get with a standard luminance filter. Details within the Great Red Spot, smaller storms, and fine structures in the main equatorial belts will be more defined, providing a superior foundation for your final IR-LRGB image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Optolong IR Pass 685nm filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is an imaging-only filter. It blocks all visible light below 670nm, a region where the human eye is most sensitive. Looking through an eyepiece with this filter in place will result in a completely black field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Optolong IR Pass 685nm filter a good choice for imaging Mars with my C11?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA C11 has tremendous resolving power, but that power is often limited by atmospheric seeing. The Optolong IR Pass 685nm filter is an excellent choice for Mars because it helps stabilize the image and increases contrast between the dark albedo features (like Syrtis Major) and the lighter desert regions. It's particularly effective at cutting through thin Martian atmospheric haze and dust, revealing surface details more clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this filter work with a color camera versus a mono camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eWith a mono camera\u003c\/strong\u003e, you use the Optolong IR Pass 685nm filter to capture a high-resolution luminance (L) channel, then combine it with separate Red, Green, and Blue channels for a full-color IR-LRGB image. \u003cstrong\u003eWith a color camera\u003c\/strong\u003e, you can use the filter to capture a monochrome video stream. You can then debayer this video as monochrome to create a sharp luminance layer and combine it with a separate, unfiltered color recording from the same session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the λ\/4 wavefront and 60\/40 surface quality specs mean for my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese specifications refer to the optical precision of the filter. \u003cstrong\u003eλ\/4 (1\/4 wave) transmitted wavefront\u003c\/strong\u003e means the filter is extremely flat and will not distort the light passing through it, preserving the sharpness delivered by your telescope. \u003cstrong\u003e60\/40 surface quality\u003c\/strong\u003e is a standard that limits the number and size of scratches and digs on the filter's surface, ensuring a clean, high-contrast image free of artifacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eB270\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Transmission\u003c\/td\u003e\n\u003ctd\u003eT\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Range\u003c\/td\u003e\n\u003ctd\u003e350-1050nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Depth\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;99% (Light Pollution Lines)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e1.25\" Mounted, 2\" Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOptolong IR Pass 685nm Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/optolong-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOptolong 3-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"1.25\" Mounted","offer_id":50341809914141,"sku":"OPT-12101","price":110.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Mounted","offer_id":50341809946909,"sku":"OPT-12102","price":161.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Optolong-IR-Pass-685nm-Filter-2-inch.jpg?v=1757559032"},{"product_id":"player-one-uv-ir-cut-s-series-filter","title":"Player One UV\/IR-Cut S-Series Filter - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects Color Balance for Color Cameras\u003c\/li\u003e\n\u003cli\u003eBlocks Unwanted Ultraviolet (UV) and Infrared (IR) Light\u003c\/li\u003e\n\u003cli\u003eEnhances Contrast for Lunar and Solar Imaging\u003c\/li\u003e\n\u003cli\u003eHigh-Quality S-Series Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003eDurable Multi-Layer Composite Coatings\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Filter Threading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One UV\/IR-Cut S-Series Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Player One UV\/IR-Cut S-Series Filter is an essential tool for achieving accurate color and maximum sharpness in planetary, lunar, and solar astrophotography, designed to fit any standard 1.25\" eyepiece or accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRestoring True Color Balance with the 1.25\" S-Series Filter\u003c\/h3\u003e\n\u003cp\u003eModern color astronomy cameras, like the Player One Mars-C, have sensors that are highly sensitive to light beyond the visible spectrum. This sensitivity to ultraviolet (UV) and infrared (IR) light can cause color shifts, often resulting in a purple or magenta cast in your images and bloated, unfocused stars. The Player One UV\/IR-Cut filter solves this by selectively blocking these wavelengths, ensuring that only visible light reaches the sensor for images with natural, true-to-life color balance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Critical Filter for High-Contrast Solar and Lunar Imaging\u003c\/h3\u003e\n\u003cp\u003eBeyond color correction, blocking unfocused IR radiation is critical for image sharpness. Strong infrared light, especially prevalent during solar and lunar imaging, can reduce image clarity and soften fine details. By adding this UV\/IR-Cut filter to your imaging train, you eliminate this source of low-contrast haze. This results in visibly sharper views of lunar crater rims, rilles, and the subtle details within solar sunspots and granulation (when used with a dedicated, safe solar filter).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need the Player One UV\/IR-Cut filter for my color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYour color camera's sensor can \"see\" ultraviolet and infrared light that your eyes cannot. This out-of-band light focuses at a different point than visible light, causing color fringing, bloated stars, and a loss of detail. The \u003cstrong\u003ePlayer One UV\/IR-Cut filter\u003c\/strong\u003e blocks this unwanted light, resulting in correct color balance and sharper images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Player One 1.25\" UV\/IR-Cut filter improve my images of Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. Planets like Jupiter and Saturn have distinct color zones that are washed out by infrared light. Using the \u003cstrong\u003ePlayer One UV\/IR-Cut filter\u003c\/strong\u003e will help render the Great Red Spot, cloud bands, and Cassini Division with more accurate color and higher contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One UV\/IR-Cut S-Series filter for solar imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is highly recommended for solar imaging, but it is \u003cstrong\u003eNOT\u003c\/strong\u003e a standalone solar filter. You must use it in combination with a primary, professional-grade solar filter that covers the front of your telescope. The UV\/IR-Cut filter then serves as a secondary filter to further increase contrast by blocking excess IR that passes through the main filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Player One filter necessary if I use a refractor telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While apochromatic (APO) refractors are well-corrected for visible light, most are not designed to bring UV and IR light to the same focal plane. A UV\/IR-cut filter is therefore essential for any telescope type—refractor, reflector, or SCT—when imaging with a color camera that does not have a built-in IR-cut window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Player One UV\/IR-Cut filter work in a 1.25\" filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003ePlayer One UV\/IR-Cut S-Series filter\u003c\/strong\u003e is housed in a standard 1.25\" cell with male M28.5x0.6 threads, making it compatible with any standard 1.25\" filter wheel, filter drawer, or accessory that accepts threaded filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between this Player One UV\/IR-Cut filter and a Luminance filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBoth filters block UV and IR light. However, a Luminance (L) filter is specifically designed for monochrome imaging, with a precise bandpass engineered to match the focal point of a set of RGB filters. A standard UV\/IR-Cut filter, like this one from Player One, is designed for broadband color correction with a one-shot-color (OSC) camera and may have a slightly wider transmission window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR-Cut (Luminance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePlayer One UV\/IR-Cut S-Series Filter - 1.25\"\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":51112144175389,"sku":"POA-UV-IR-CUT-125","price":31.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player-One-UV-IR-CUT-1_25inch-Filter.jpg?v=1775160317"},{"product_id":"player-one-uv-ir-cut-anti-halo-filter-2","title":"Player One UV\/IR-Cut Anti-Halo Filter - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks unwanted Ultraviolet (UV) and Infrared (IR) wavelengths\u003c\/li\u003e\n\u003cli\u003eFeatures advanced anti-halo coatings to minimize reflections\u003c\/li\u003e\n\u003cli\u003eStandard 2\" filter cell with M48x0.75 threads\u003c\/li\u003e\n\u003cli\u003eMaximizes contrast and sharpens stars in color and monochrome imaging\u003c\/li\u003e\n\u003cli\u003eEssential for refractive and catadioptric telescopes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One UV\/IR-Cut Anti-Halo Filter - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Player One UV\/IR-Cut Anti-Halo Filter provides critical ultraviolet and infrared blocking in a standard 2\" threaded cell, using advanced coatings to eliminate halos around bright stars for cleaner, higher-contrast astronomical images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 2\" Filter for Sharper Stars and Higher Contrast\u003c\/h3\u003e\n\u003cp\u003eWhile your camera sensor is sensitive to a wide spectrum of light, most telescopes are only designed to bring visible light to a sharp focus. Out-of-focus UV and IR light creates a soft, low-contrast halo around stars, commonly known as \"star bloat,\" which degrades image sharpness. This 2\" filter blocks those unwanted wavelengths, ensuring only focused, visible light reaches the sensor.\u003c\/p\u003e\n\u003cp\u003eThe result is immediately apparent in your images: stars become tighter, finer details emerge in nebulae and galaxies, and the overall contrast of the image is significantly improved. It is an essential component for any imaging setup using a refractor, Schmidt-Cassegrain, or any other compound telescope design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSuppressing Halos and Internal Reflections\u003c\/h3\u003e\n\u003cp\u003eBeyond simple UV\/IR blocking, the Player One filter incorporates multi-layer anti-reflection coatings specifically designed to combat halos. Halos are caused by bright starlight reflecting between the filter surface and the camera sensor cover glass. This filter's coatings disrupt these internal reflections, preventing distracting rings from forming around bright targets like Vega or Alnitak.\u003c\/p\u003e\n\u003cp\u003eThis anti-halo technology is particularly crucial for modern, highly-reflective CMOS sensors. By minimizing these artifacts at the source, you spend less time processing them out and achieve a cleaner final image straight from the camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlayer One UV\/IR-Cut vs. Standard Luminance Filters\u003c\/h3\u003e\n\u003cp\u003eWhile both this filter and a standard Luminance (L) filter perform the same core function of blocking UV and IR light, the Player One Anti-Halo filter is engineered for a different challenge. Many basic L-filters can still produce noticeable halos and internal reflections when used with bright stars and sensitive modern sensors.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard L-Filter:\u003c\/strong\u003e Primarily focused on cutting UV\/IR wavelengths. It is effective for basic luminance data collection but may struggle with reflections on bright targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlayer One Anti-Halo Filter:\u003c\/strong\u003e Provides the same UV\/IR cut but adds advanced coatings optimized to suppress the internal reflections that cause halos. It is the superior choice for imagers who demand the cleanest possible raw data, especially when shooting targets in star-rich fields.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen do I need the Player One 2\" UV\/IR-Cut filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis filter is essential for nearly all astronomical imaging with a color or monochrome camera, especially when using a telescope that is not a pure reflector (like a Newtonian). \u003cstrong\u003eRefractors, SCTs, Maksutovs, and RCs\u003c\/strong\u003e all benefit significantly, as they do not focus UV and IR light at the same plane as visible light, which causes bloated stars. This filter corrects that by only allowing visible light to pass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Player One filter help reduce star bloat in my 80mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. An 80mm refractor, particularly an achromatic or doublet design, is a prime example of an optical system that needs strong UV\/IR filtering. Without it, unfocused infrared light will create soft, bloated halos around your stars. The Player One UV\/IR-Cut filter will produce noticeably tighter, sharper stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Player One UV\/IR-Cut filter necessary for imaging Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is highly recommended for planetary imaging. Using this filter with a color camera when imaging Jupiter or Saturn ensures that only the focused visible light contributes to the final image. This increases sharpness and contrast, allowing you to resolve finer details in the cloud bands and the Great Red Spot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this Player One filter and a standard L-filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBoth filters block UV and IR light. However, the Player One UV\/IR-Cut Anti-Halo filter includes superior multi-layer coatings designed to eliminate internal reflections between the filter and the camera sensor. This specifically targets and reduces the \"halos\" that can appear around very bright stars, a common issue with standard L-filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One 2\" Anti-Halo filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is designed for imaging, it can be used visually. Some observers with highly-corrected apochromatic refractors find it can slightly improve contrast at the eyepiece. However, its primary and most significant benefit is for photographic and digital imaging applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach this 2\" Player One filter to my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Player One filter has standard \u003cstrong\u003eM48x0.75 female threads\u003c\/strong\u003e. It can be threaded directly into a 2\" filter wheel, a filter drawer, or the 2\" nosepiece of your camera or field flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":51112145813789,"sku":"POA-AH-UV-IR-CUT-2","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player-One-UV-IR-CUT-2inch-Filter.png?v=1775160543"},{"product_id":"svbony-uv-ir-cut-filter","title":"SVBONY UV IR-Cut Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks unwanted Ultraviolet (UV) and Infrared (IR) wavelengths\u003c\/li\u003e\n\u003cli\u003eStandard 2-inch filter threads for wide compatibility\u003c\/li\u003e\n\u003cli\u003eImproves image contrast and color fidelity in astrophotography\u003c\/li\u003e\n\u003cli\u003eReduces chromatic aberration, especially in refractor telescopes\u003c\/li\u003e\n\u003cli\u003eActs as a durable dust and debris shield for your camera sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003e2-inch UV IR Cut Filter\u003c\/h2\u003e\n\u003cp\u003eThis standard 2-inch UV\/IR Cut Filter is an essential component for any astrophotographer using a color camera, modified DSLR, or CCD. By blocking invisible ultraviolet and infrared light, this 2-inch filter ensures your sensor only records the visible spectrum, resulting in sharper stars and truer colors. Designed with standard 2-inch filter threads, it installs directly onto 2-inch eyepieces, nosepieces, and filter wheels for immediate image improvement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSharpen Your Images: The 2-inch UV\/IR Cut Advantage\u003c\/h3\u003e\n\u003cp\u003eMany telescopes, particularly refractors, are not fully corrected for wavelengths outside the visible spectrum. When unfocused UV and IR light hits your sensor, it creates a soft halo around stars, reduces contrast, and can cause a magenta cast in your images. This 2-inch filter eliminates that problem by acting as a \"luminance\" filter for your one-shot-color camera, transmitting only visible light for tighter, higher-contrast results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Critical L-Filter for 2-inch Color Imaging Setups\u003c\/h3\u003e\n\u003cp\u003eFor anyone using a modified DSLR, a dedicated astronomy CCD, or even a sensitive webcam for planetary imaging, this filter is not optional—it's necessary. Digital sensors have a native sensitivity to infrared light that the human eye lacks. This filter restores natural color balance, provides finer color gradation, and prevents the ghosting and internal reflections caused by IR radiation bouncing within the optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eProtect Your Sensor with This 2-inch Optical Glass Filter\u003c\/h3\u003e\n\u003cp\u003eBeyond its optical benefits, this 2-inch UV\/IR Cut filter serves as a permanent, high-quality protector for your expensive camera sensor. Made from true optical quality glass, it shields the sensor from dust, moisture, and potential scratches without degrading image quality. It's an inexpensive insurance policy that keeps your primary imaging equipment safe while you work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of this 2-inch UV\/IR Cut Filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary job is to block invisible ultraviolet (UV) and infrared (IR) light from reaching your camera sensor. This is crucial because digital sensors are sensitive to these wavelengths, which can cause bloated stars, reduced contrast, and unnatural color casts in your astrophotos. It effectively cleans up the signal for a sharper, more accurate image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need this 2-inch UV\/IR Cut filter for my modified DSLR camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes, absolutely.\u003c\/strong\u003e When a DSLR is \"astro-modified,\" the stock IR-blocking filter is removed to increase sensitivity to hydrogen-alpha light. A side effect is that the sensor becomes highly sensitive to all IR light, which will ruin color balance and sharpness. This external 2-inch filter restores the necessary IR cut, allowing you to capture nebulae while maintaining correct star colors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 2-inch UV\/IR Cut Filter help when imaging with a refractor telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eRefractor telescopes, especially achromatic and some ED doublets, focus different colors of light at slightly different points. This effect, known as chromatic aberration, is often worse in the UV and IR spectrum. By blocking these wavelengths, the 2-inch filter prevents the \"blue-violet bloat\" and soft focus associated with unfocused light, leading to a much sharper final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 2-inch filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it is optically transparent in the visible spectrum, a UV\/IR cut filter typically provides no noticeable benefit for visual observing. The human eye is not sensitive to the wavelengths it blocks. Its primary application is for imaging with digital sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2-inch UV\/IR Cut Filter thread into my 2-inch eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This filter uses standard 2-inch filter threads (M48x0.75), which is the industry standard for 2-inch eyepieces, nosepieces, filter wheels, and other astronomy accessories. It should be compatible with any standard 2-inch format equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will this 2-inch filter affect imaging the Orion Nebula (M42) with my color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing this 2-inch filter when imaging the Orion Nebula (M42) will result in a significantly better image. It will produce tighter, more defined stars in the Trapezium cluster, better contrast between the glowing gas and dark dust lanes, and more natural color rendition in the faint outer loops. Without it, the bright core can easily appear bloated and lose detail due to IR signal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product is covered by a standard manufacturer's warranty.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"1.25\" Round Mounted","offer_id":52861233398045,"sku":"SV-F9127A","price":22.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":52861233430813,"sku":"SV-F9127B","price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-2inch-UV-IR-Cut-Filter-1_12f74808-11aa-4745-b413-c46227b1a7b9.jpg?v=1788660020"},{"product_id":"svbony-sv164-dark-filter-for-ccd-and-cmos-cameras","title":"SVBONY SV164 Dark Filter for CCD and CMOS Cameras","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2-inch Filter Size\u003c\/li\u003e\n\u003cli\u003eStandard M48x0.75 Threads\u003c\/li\u003e\n\u003cli\u003eEnables Automated Dark Frame Capture\u003c\/li\u003e\n\u003cli\u003e1mm Filter Thickness\u003c\/li\u003e\n\u003cli\u003eDurable Anodized Aluminum Cell\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSVBONY SV164 Dark Filter for CCDs Camera 2 inch\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV164 Dark Filter for CCDs Camera 2 inch simplifies calibration by integrating directly into your 2-inch filter wheel or drawer with standard M48x0.75 threads. This 1mm thick filter provides a perfectly opaque surface, allowing you to automate dark frame acquisition without ever touching your telescope cap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAutomated Dark Frames: The 1mm Solution for 2-inch Imaging Trains\u003c\/h3\u003e\n\u003cp\u003eA dark filter is a fundamental tool for serious imagers, enabling the automated capture of dark frames—essential for removing thermal noise from your images. By placing the SV164 in a filter wheel, you can program your acquisition software to capture darks at the end of a session without manual intervention. The standard 1mm thickness helps maintain consistent focus across your filter set.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated Workflow:\u003c\/strong\u003e Integrate the SV164 into a 2-inch filter wheel and capture dark frames as a seamless part of your imaging sequence, even from a remote observatory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect Opacity:\u003c\/strong\u003e The filter is designed to be completely opaque, ensuring no stray light can contaminate your crucial calibration frames.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 2-inch Format:\u003c\/strong\u003e M48x0.75 threads ensure compatibility with all standard 2-inch filter wheels, filter drawers, and other threaded accessories designed for larger sensors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe SV164 Filter vs. Manual Capping: Repeatable M48x0.75 Integration\u003c\/h3\u003e\n\u003cp\u003eWhile capping your telescope is a free alternative, it introduces variables that a dedicated dark filter eliminates. Manually placing a cap risks bumping the telescope, altering focus or pointing, and can suffer from light leaks. A remote observatory makes manual capping impossible.\u003c\/p\u003e\n\u003cp\u003eThe SVBONY SV164 filter threads securely into your imaging train with its M48x0.75 interface, creating a perfectly light-tight seal every time. This guarantees consistent, high-quality dark frames and enables you to capture them at the correct sensor temperature throughout the night, dramatically improving your final image quality by ensuring your calibration data is a perfect match for your light frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the SVBONY SV164 Dark Filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV164 is a specialized, completely opaque filter used for taking \u003cstrong\u003edark frames\u003c\/strong\u003e. These are critical calibration files that record the thermal noise generated by your camera's sensor. By subtracting this noise pattern from your light frames (your actual images), you can significantly clean up your final astrophoto.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SV164 2-inch filter improve my astrophotography workflow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBy installing the SV164 in a 2-inch filter wheel or drawer, you can automate the process of taking dark frames. Instead of manually going to your telescope to put the lens cap on at the end of a session, your imaging software can simply switch to the dark filter and begin capturing calibration frames immediately, saving time and effort.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SVBONY SV164 filter for observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The SV164 is a dark frame filter, meaning it is completely opaque and blocks all light. It is a tool for camera calibration only and cannot be used for visual observation or for imaging celestial objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a 2-inch dark filter like the SV164 instead of just a 1.25-inch version?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 2-inch filter is necessary if you are using a camera with a large sensor (such as APS-C or full-frame) or a 2-inch filter wheel to avoid vignetting. The larger M48x0.75 threads and filter diameter match the rest of your 2-inch imaging train, ensuring the entire sensor is covered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy imaging sequence for the Andromeda Galaxy (M31) finishes at 3 AM. How does the SV164 filter help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the SV164 in your filter wheel, you can program your software to automatically switch to the dark filter and begin taking dark frames the moment your M31 sequence ends. This means you can be asleep while your rig correctly captures temperature-matched calibration frames, ensuring the highest quality data without any manual effort.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SVBONY SV164 filter compatible with my 2-inch filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The SVBONY SV164 uses standard \u003cstrong\u003eM48x0.75 threads\u003c\/strong\u003e and is housed in a standard 2-inch filter cell. It is compatible with virtually all 2-inch filter wheels and filter drawers from brands like ZWO, QHY, Atik, and others.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eDark Frame Imaging Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSV164 Dark Filter - 2 inch\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"1.25\" Round Mounted","offer_id":52861236117789,"sku":"SV-W9124A","price":16.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":52861236150557,"sku":"SV-W9124B","price":19.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV164-Dark-Filter-for-CCDs-Camera-2-inch-1_16373d27-3d97-46f9-a7cf-700274e2882f.jpg?v=1788660218"},{"product_id":"svbony-sv183-685nm-ir-pass-filter","title":"SVBONY SV183 685nm IR Pass Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e685nm Infrared (IR) Pass Filter\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Threaded Barrel\u003c\/li\u003e\n\u003cli\u003eTransmits \u0026gt;95% of light from 673nm to 1100nm\u003c\/li\u003e\n\u003cli\u003eBlocks Visible Light with OD2 Blocking from 400-660nm\u003c\/li\u003e\n\u003cli\u003e1\/4λ Surface Parallelism for Minimal Image Distortion\u003c\/li\u003e\n\u003cli\u003eConstructed with SCHOTT B260 Optical Glass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSVBONY SV183 685nm IR Pass Filter 1.25\" for Planetary Astrophotography\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV183 685nm IR Pass Filter is a specialized tool for planetary imagers, designed to cut through atmospheric turbulence by isolating near-infrared light with a sharp 670nm cut-on. This 1.25\" filter uses SCHOTT B260 glass to achieve over 95% transmission in its passband (673-1100nm), capturing a steady signal that atmospheric seeing affects far less than visible light. The result is a sharper, more detailed monochrome image of planetary surfaces, especially during nights of average or poor seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eStabilize Atmospheric Seeing with \u0026gt;95% IR Transmission\u003c\/h3\u003e\n\u003cp\u003eThe primary function of the SV183 filter is to mitigate the effects of atmospheric turbulence, or \"seeing.\" Shorter wavelengths of light (like blue and green) are scattered more aggressively by air currents, causing the familiar shimmering effect. By blocking all light below 670nm and passing over 95% of light from 673nm to 1100nm, this filter allows you to capture only the longer, more stable infrared wavelengths, effectively \"freezing\" the image and revealing fine details on Jupiter's cloud bands or Martian surface features that would otherwise be blurred.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Optics: 1\/4λ Parallelism in a 1.1mm Substrate\u003c\/h3\u003e\n\u003cp\u003eA filter is useless if it degrades your telescope's optical quality. The SV183 is built on a high-grade SCHOTT B260 glass substrate with a thickness of just 1.1mm to minimize focus shift. Critically, it features a surface parallelism of 1\/4λ (lambda), ensuring the filter surfaces are optically flat and parallel to prevent introducing astigmatism or other distortions into the light path, preserving the sharpness of your planetary data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSV183 685nm vs. Red Filters: A Dedicated Seeing-Cutter\u003c\/h3\u003e\n\u003cp\u003eWhile a standard deep-sky red filter can offer some seeing reduction, the SV183 685nm is a far more aggressive and specialized tool. A typical red filter has a wider, more gradual passband, letting in significant visible light that is still susceptible to turbulence. The SV183's sharp 670nm cut-on creates a dedicated monochrome luminance channel purely in the near-IR spectrum.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Contrast:\u003c\/strong\u003e On planets like Mars and Jupiter, imaging in the 685nm+ range enhances the contrast of surface and cloud features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonochrome Imaging:\u003c\/strong\u003e This filter is intended for use with monochrome cameras to create a high-resolution luminance (L) layer, which can then be combined with color data (RGB) taken separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeeing Penetration:\u003c\/strong\u003e The OD2 blocking of visible light from 400-660nm ensures that only the most stable wavelengths reach your sensor, making it more effective than a generic red filter on nights with poor atmospheric stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the SVBONY SV183 685nm IR Pass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary purpose is to improve planetary imaging by combating atmospheric turbulence (\"seeing\"). It blocks visible light and only passes near-infrared light (starting at 670nm), which is less affected by air currents. This results in a sharper, more stable image, allowing you to capture finer details on planets like Jupiter, Saturn, and Mars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a monochrome camera to use the SV183 685nm filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes, a monochrome camera is strongly recommended.\u003c\/strong\u003e A color camera has a Bayer matrix that blocks two-thirds of the incoming light for any given color. Since this filter passes only a narrow slice of the spectrum, using it with a color camera will result in a very dim, low-resolution red image. It is designed to be used with a mono camera to capture a high-detail luminance channel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the SV183 685nm filter affect my exposure times for Jupiter with an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou should expect significantly longer exposure times compared to imaging without a filter or with a standard UV\/IR cut filter. Because the SV183 blocks the entire visible spectrum where camera sensors are most sensitive, you will need to increase your gain, exposure time, or both to get a sufficiently bright histogram. This is a normal trade-off for the benefit of stabilized seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SV183 685nm filter for deep-sky imaging of the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile technically possible, it is not ideal. Most of the interesting visual detail in emission nebulae like M42 comes from specific visible wavelengths like Hydrogen-alpha (656nm) and Oxygen-III (501nm). The SV183 blocks these entirely. You would only capture the faint, reflected infrared continuum, losing all the vibrant color and structure the nebula is known for.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 1\/4λ parallelism spec mean for the SV183 filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1\/4λ (one-quarter wavelength) parallelism\u003c\/strong\u003e is a measure of optical quality. It guarantees that the two faces of the filter glass are extremely parallel to each other. This prevents the filter from distorting the light passing through it, which could otherwise degrade image sharpness or introduce aberrations like astigmatism. It ensures the filter will not compromise the high-resolution images you are trying to capture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 685nm cutoff on the SV183 compare to using a standard red filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard red (R) filter for LRGB imaging typically starts passing light around 600nm. The SVBONY SV183 has a much sharper and deeper cutoff at 670nm. This makes it more effective at eliminating turbulent visible light. The SV183 is a specialized \"seeing cutter,\" whereas a red filter is a broadband component for color imaging that offers only a mild seeing-reduction benefit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eIR Pass Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-On Wavelength\u003c\/td\u003e\n\u003ctd\u003e670nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmission\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;95% from 673-1100nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking\u003c\/td\u003e\n\u003ctd\u003eOD2 @ 400-660nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength Range\u003c\/td\u003e\n\u003ctd\u003e350-1100nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Material\u003c\/td\u003e\n\u003ctd\u003eSCHOTT B260\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Thickness\u003c\/td\u003e\n\u003ctd\u003e1.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Parallelism\u003c\/td\u003e\n\u003ctd\u003e1\/4 λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism (Angle)\u003c\/td\u003e\n\u003ctd\u003e30”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Material\u003c\/td\u003e\n\u003ctd\u003eAviation Aluminum 6061T6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eSingle Thread M28.5x0.6 (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSVBONY SV183 685nm IR Pass Filter 1.25\"\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Plastic Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"1.25\" Round Mounted","offer_id":52861236248861,"sku":"SV-W9142A","price":26.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":52861236281629,"sku":"SV-W9142B","price":40.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV183-685nm-IR-Pass-Filter-1-25-for-Planetary-Astrophotography-1_2c98d5cf-6620-40ad-b04d-c336087bc7d2.jpg?v=1788660230"},{"product_id":"svbony-sv231-fringe-killer-color-correction-filter","title":"SVBONY SV231 Fringe Killer Color Correction Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReduces violet fringing (chromatic aberration) in achromatic refractors\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" filter threads for universal compatibility\u003c\/li\u003e\n\u003cli\u003eBlocks IR wavelengths above 700nm for sharper imaging\u003c\/li\u003e\n\u003cli\u003eImproves contrast on lunar and planetary surfaces\u003c\/li\u003e\n\u003cli\u003eUltra-lightweight at only 4.2g (0.15oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSVBONY SV231 1.25\" Fringe Killer Color Correction Filter\u003c\/h2\u003e\n\u003cp\u003eThe SVBONY SV231 is a 1.25\" fringe-killer filter designed to correct chromatic aberration in achromat refractors, weighing only 4.2g. It selectively blocks defocused blue light and near-infrared (NIR) wavelengths above 700nm—extending its blocking range up to 1150nm—to sharpen views of the Moon and planets by removing distracting violet halos.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTaming Achromatic Aberration: Blocking Blue and IR Above 700nm\u003c\/h3\u003e\n\u003cp\u003eAchromatic refractors, by design, struggle to bring all colors of light to the same focal point, resulting in a purple or blue \"fringe\" around bright objects like the Moon, Jupiter, and bright stars. The SV231 filter directly targets this issue by blocking defocused light in the blue spectrum and cutting off infrared light above 700nm. By removing these out-of-focus wavelengths, the filter allows the correctly focused light to reach your eye or camera sensor, dramatically tightening the image and improving sharpness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEnhanced Lunar \u0026amp; Planetary Contrast in a 1.25\" Filter\u003c\/h3\u003e\n\u003cp\u003eWith the violet glow eliminated, the true details on celestial surfaces become visible. The SVBONY SV231 filter boosts contrast, revealing finer crater details, rilles, and mountain ranges on the Moon. On planets, this translates to better definition in Jupiter's cloud bands and a more distinct view of Saturn's rings against the planet's disk. Its standard 1.25\" threaded body allows it to be used on virtually any eyepiece or camera nosepiece, making it an easy upgrade for any achromat owner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSVBONY SV231 vs. Baader Fringe-Killer: An Accessible Entry Point\u003c\/h3\u003e\n\u003cp\u003eThe SVBONY SV231 serves as a highly effective and affordable alternative to premium options like the Baader Fringe-Killer. While more expensive filters may employ more complex multi-coating formulas, the SV231 delivers a significant improvement in image quality for any achromat user struggling with chromatic aberration. For observers wanting to clean up their views without a large investment, this filter provides the core function of violet fringe reduction and makes high-contrast observing accessible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the SVBONY SV231 Fringe Killer actually do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe SVBONY SV231 is a color correction filter that blocks specific wavelengths of light that are poorly focused by achromatic refractor telescopes. Specifically, it reduces the violet\/blue light and cuts out infrared light above 700nm, which sharpens the image and increases contrast on bright objects like the Moon and planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the SVBONY SV231 filter change the color of the view?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, like most fringe-killer filters, it will impart a slight color cast to the image, typically a very pale yellow-green. This is a normal trade-off for the significant increase in sharpness and contrast. The effect is most noticeable on bright white objects like the Moon, but it is generally considered a minor compromise for the removal of the distracting violet fringe.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the SVBONY SV231 improve my view of Jupiter through a 4\" f\/10 achromat?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThrough a 4\" f\/10 achromat, Jupiter often shows a soft purple halo that reduces contrast. The SVBONY SV231 will filter out this halo, resulting in a blacker sky background around the planet. This makes the boundary between the cloud bands and zones much more distinct and can help you resolve smaller features like barges and ovals within the belts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SVBONY SV231 useful for imaging the Moon's crater Clavius?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. When imaging a bright target like the Moon, chromatic aberration can soften the fine details within craters. Using the SVBONY SV231 will tighten the focus, allowing a CMOS or CCD camera to capture much sharper detail in the craterlets on the floor of Clavius and the definition of its terraced walls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the SVBONY SV231 filter for my apochromatic (APO) or ED refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is not necessary for high-end APO or ED refractors. Those telescopes use special glass elements to correct for chromatic aberration optically, so they do not produce the prominent violet fringing that this filter is designed to eliminate. Using it on an APO would only add a slight, unnecessary color tint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the SVBONY SV231 filter for deep-sky objects?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it can be used to tighten star images in star clusters, the SVBONY SV231 is not ideal for faint deep-sky objects like nebulae and galaxies. It reduces overall light transmission slightly and is designed to improve high-contrast planetary and lunar views. For deep-sky, a broadband or narrowband nebula filter is a much better choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSVBONY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSV231\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eFringe Killer \/ Color Correction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e4.2g \/ 0.15oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSVBONY SV231 1.25\" Fringe Killer Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Plastic Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSVBONY Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"1.25\" Round Mounted","offer_id":52861236936989,"sku":"SV-W9186A","price":43.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":52861236969757,"sku":"SV-W9186B","price":56.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-SV231-1-25-Fringe-Killer-Color-Correction-Filter-for-Lunar-1_8a241120-4dd9-4e21-8f45-fc9aaf7e76c1.jpg?v=1788660278"},{"product_id":"baader-planetarium-fcct-2-inch-unmounted-clearglass-filter-47-4-mm","title":"Baader Planetarium FCCT 2\" Unmounted Clearglass Filter (Ø 47.4 mm)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2-inch (47.4 mm) unmounted clearglass filter\u003c\/li\u003e\n\u003cli\u003eDesigned to be parfocal with other Baader narrowband filters\u003c\/li\u003e\n\u003cli\u003eCMOS-optimized anti-reflection coatings\u003c\/li\u003e\n\u003cli\u003eEnables fast, precise focusing before switching to dim filters\u003c\/li\u003e\n\u003cli\u003eServes as a high-transmission protective dust shield for your sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader FCCT 2\" Unmounted Clearglass Filter (Ø 47.4 mm)\u003c\/h2\u003e\n\u003cp\u003eThe Baader FCCT 2\" Unmounted Clearglass Filter provides a 47.4 mm clear optical window designed as a critical parfocal tool for narrowband imaging. This filter is mechanically matched in thickness to other Baader narrowband filters, ensuring your focus position remains unchanged when switching from this clear filter to a dim H-alpha or OIII filter, saving critical imaging time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 2\" Parfocal Solution for Narrowband Imaging\u003c\/h3\u003e\n\u003cp\u003eFocusing through an extremely narrow bandpass filter can be a slow and frustrating process, as the dim view makes it difficult to achieve critical sharpness. This clearglass filter solves the problem by allowing you to use the full, bright light spectrum from a star to nail your focus quickly and accurately. Because it shares the same mechanical thickness as Baader's other CMOS-optimized filters, you can simply swap it out for your imaging filter without needing to refocus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 47.4 mm CMOS-Optimized Dust Shield\u003c\/h3\u003e\n\u003cp\u003eBeyond its focusing utility, this filter serves as a high-quality protective window for your camera sensor. The \"CMOS-optimized\" designation signifies that it features advanced anti-reflection coatings designed to suppress halos and internal reflections that can occur with highly reflective modern sensors. This ensures that it protects your sensor from dust without degrading your image quality, making it an essential component for any FCCT (Filter Changer Camera Tilter) or custom filter drawer setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 47.4 mm FCCT Clearglass filter help when imaging the Pelican Nebula (IC 5070) with a 3nm Ha filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eImaging the Pelican Nebula (IC 5070) with a 3nm H-alpha filter results in a very dim image, making focusing difficult. You would use the \u003cstrong\u003eBaader FCCT Clearglass filter\u003c\/strong\u003e first to focus on a nearby bright star. Once sharp focus is achieved, you switch to the 3nm Ha filter. Because they are parfocal, your focus will be perfect, and you can begin imaging immediately without struggling with the dim nebula view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"parfocal\" mean for this Baader Clearglass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eParfocal\u003c\/strong\u003e means that this filter has the same optical thickness as other filters in Baader's CMOS-optimized line. This ensures that the focal point of your telescope does not shift when you switch between this clear filter and, for example, a Baader narrowband or LRGB filter. This eliminates the need to refocus with every filter change, which is a major time-saver during an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the FCCT Clearglass filter just a plain piece of glass?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is an optical-grade window with advanced, multi-layer anti-reflection coatings. Unlike a simple piece of glass, the \u003cstrong\u003e\"CMOS-optimized\"\u003c\/strong\u003e coatings are designed to maximize light transmission and prevent halos, reflections, and other artifacts common with sensitive CMOS sensors. However, note that this is a clearglass filter; it is not a UV\/IR cut filter and should not be used as a luminance filter with refractors or other scopes that are not corrected outside the visual spectrum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm using a monochrome camera and a filter wheel, where would I install the 2\" FCCT Clearglass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou would typically install the \u003cstrong\u003eBaader 2\" FCCT Clearglass filter\u003c\/strong\u003e in an empty slot in your filter wheel, often designated as the \"Luminance\" or \"Focus\" position. This allows your software to automatically rotate to the clear filter for focusing routines (like a V-curve analysis) before switching to your R, G, B, or narrowband filters to capture data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this filter unmounted with a 47.4 mm diameter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e47.4 mm diameter\u003c\/strong\u003e and unmounted format are specifically for systems like the Baader FCCT (Filter Changer Camera Tilter) and other custom filter holders that require unmounted filters of this size. It provides a larger clear aperture than standard mounted 2\" filters, helping to prevent vignetting with larger sensors and fast optical systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Baader Clearglass filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its primary design is for imaging, you could use it as a high-quality dust plug for your diagonal or eyepiece barrel. However, it offers no filtration or image enhancement for visual use. Its main value is realized in an astrophotography setup as a parfocal focusing tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eClearglass (Focusing \/ Dust Protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e47.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eCMOS-Optimized, Anti-Reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eParfocal focusing for narrowband imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Application\u003c\/td\u003e\n\u003ctd\u003eSensor dust protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle or Set?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003efull Spectrum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFCCT 2\" Unmounted Clearglass Filter (Ø 47.4 mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Cleaning_and_Maintenance_of_Optics_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Cleaning and Maintenance of Optics Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_FCCT_Filter_Changer_Camera_Tilter_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium FCCT Filter Changer Camera Tilter Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913179558173,"sku":"BAA-2458416U","price":82.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-FCCT-Filter-Clearglass-Filter-2-unmounted-47-4-mm-for-focusing-dust-protection-1_2f95b1ff-1d24-4174-ad29-2eecc2b32e6f.jpg?v=1789087359"},{"product_id":"baader-planetarium-uv-ir-cut-l-filter-cmos-optimized","title":"Baader Planetarium UV\/IR-Cut \/ L-Filter – CMOS-optimized","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eServes as a high-transmission Luminance (L) filter\u003c\/li\u003e\n\u003cli\u003eProvides complete Ultraviolet (UV) and Infrared (IR) blocking\u003c\/li\u003e\n\u003cli\u003eEngineered with CMOS-optimized anti-reflection coatings\u003c\/li\u003e\n\u003cli\u003eAvailable as 31, 36, 47.4 \u0026amp; 50.4 mm round or 50x50 \u0026amp; 65x65 mm square unmounted filters\u003c\/li\u003e\n\u003cli\u003eFor compatible filter wheels and drawers, and the Baader FCCT (Filter Changer \u0026amp; Camera Tilter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eUV\/IR-Cut \/ L-Filter – CMOS-optimized\u003c\/h2\u003e\n\u003cp\u003eThe Baader UV\/IR-Cut \/ L-Filter is a specialized unmounted filter designed to serve as the primary luminance channel for modern CMOS cameras. Available in round (31 mm, 36 mm, 50.4 mm, and 47.4 mm for the Baader FCCT system) and square (50x50 mm and 65x65 mm) formats, this filter provides a clean, high-transmission visible spectrum signal by strictly blocking unwanted ultraviolet and infrared wavelengths that cause bloated stars and soft focus in sensitive imaging systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA True Luminance Filter: Blocking UV\/IR for CMOS Sensors\u003c\/h3\u003e\n\u003cp\u003eModern CMOS sensors are highly sensitive to light outside the visible spectrum, particularly in the near-infrared. Without a proper cut-off filter, this IR sensitivity leads to bloated, unfocused stars and a significant loss of resolution. This filter acts as a true luminance filter, transmitting the desired visible light while completely blocking UV and IR, ensuring your refractor's color correction is maintained and stars remain sharp.\u003c\/p\u003e\n\u003cp\u003eThe \"CMOS-optimized\" designation refers to its advanced anti-reflection coatings. These are engineered to eliminate the halos and internal reflections that can occur between the flat, reflective surface of a CMOS sensor and the filter glass, keeping bright stars like Vega or Sirius artifact-free.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUnmounted Round and Square Formats, Including Baader's FCCT System\u003c\/h3\u003e\n\u003cp\u003eEvery size is supplied unmounted: 31 mm and 36 mm round filters for filter wheels made for those sizes, 50.4 mm round and 50x50 mm or 65x65 mm square filters for large filter wheels and drawers serving full-frame or larger sensors, and a precise 47.4 mm diameter for direct and secure installation into the Baader FCCT (Filter Changer \u0026amp; Camera Tilter). This unmounted design is critical for minimizing the optical path length, a key factor in achieving focus with complex imaging trains that include correctors or reducers.\u003c\/p\u003e\n\u003cp\u003eIntegrated directly into the FCCT, the 47.4 mm filter becomes a core part of a rigid, tilt-corrected imaging system, while the large round and square sizes keep the light path unobstructed for big sensors. Both avoid the potential for flexure, vignetting, or clearance issues that can arise from stacking traditional threaded filter cells, ensuring a stable and optimized light path from the telescope to your camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUnmounted Filters vs. Standard 2\" Mounted Filters: A System Approach\u003c\/h3\u003e\n\u003cp\u003eWhile a standard 2\" mounted filter offers broad compatibility, an unmounted filter provides superior integration in filter wheels, drawers and systems built for its exact size. The primary trade-off is versatility for optimization.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 2\" Mounted Filter:\u003c\/strong\u003e Housed in a threaded cell (M48x0.75), it can be used in any standard 2\" filter wheel or drawer. However, this cell adds several millimeters to the back focus consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaader Unmounted UV\/IR-Cut \/ L-Filter:\u003c\/strong\u003e By removing the housing, it consumes the minimum possible back focus. Each size needs a holder made for it – the 47.4 mm version is designed exclusively for the Baader FCCT, ensuring perfect fit, centering, and parfocality within that system – and no version can be used in standard threaded 2\" filter holders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Baader UV\/IR-Cut \/ L-Filter supplied unmounted?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter is unmounted to integrate directly into filter wheels, drawers and carriers made for its size – including the Baader FCCT (Filter Changer \u0026amp; Camera Tilter) for the 47.4 mm version. This design minimizes the consumption of precious back focus, reduces potential vignetting, and ensures a rigid, stable optical path without the added length and mechanical complexity of a standard threaded filter cell.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"CMOS-optimized\" mean for this UV\/IR-Cut filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eCMOS-optimized\u003c\/strong\u003e means the filter features advanced anti-reflection coatings designed to prevent halos and other artifacts caused by reflections between the filter and the highly reflective surface of a CMOS sensor. This is especially important for maintaining clean, high-contrast images of fields containing bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich size do I need, and will it fit a standard 2\" filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAll versions are unmounted, so none will fit a standard filter wheel drawer or carousel designed for threaded M48 (2\") mounted filters. Choose the size your holder accepts: \u003cstrong\u003e31 mm or 36 mm\u003c\/strong\u003e round for wheels made for those diameters, \u003cstrong\u003e50.4 mm\u003c\/strong\u003e round or \u003cstrong\u003e50x50 mm \/ 65x65 mm\u003c\/strong\u003e square for large filter wheels and drawers used with full-frame or larger sensors, and \u003cstrong\u003e47.4 mm\u003c\/strong\u003e exclusively for the Baader FCCT system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm imaging the Pleiades (M45) with a refractor, how does this L-filter help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen imaging a reflection nebula like the Pleiades (M45), the bright blue stars are strong sources of UV and IR light. This filter blocks that out-of-band light, which refractors cannot bring to the same focal point as visible light. The result is significantly tighter stars, sharper detail in the faint nebulosity, and the prevention of \"blue bloat\" that can overwhelm the image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this filter benefit imaging the Andromeda Galaxy (M31) with an SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a broadband target like the Andromeda Galaxy (M31), this filter serves as your high-transmission luminance channel. Its strict UV\/IR blocking is critical for SCTs, which often use corrector plates that are not optimized for these wavelengths. By isolating the visible spectrum, you achieve a much sharper luminance frame with better contrast between the galaxy's core, dust lanes, and faint outer arms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this filter only for monochrome cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is designed primarily as a luminance (L) filter for monochrome LRGB imaging. It can also help a color CMOS camera that lacks a sufficient built-in IR-cut filter, where the missing IR blocking leads to a reddish cast and bloated stars. If your color camera already has a UV\/IR-cut window in front of the sensor, adding this filter usually brings little additional benefit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle or Set?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Usage\u003c\/td\u003e\n\u003ctd\u003eCMOS, CCD, IR-Cut, Luminance, UV-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003e420 – 685 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eReflex-Blocker™ hard coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable for f\/ratio\u003c\/td\u003e\n\u003ctd\u003ef\/15 to f\/1.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e2\" Round Unmounted Filter (Ø 47.4mm, FCCT)\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR Cut \/ Luminance (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" (Ø 47.4 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted Round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eBaader FCCT (Filter Changer \u0026amp; Camera Tilter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection, CMOS-Optimized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter size\u003c\/td\u003e\n\u003ctd\u003e47.4 mm (2\" w\/o cell)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter mounted\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Filter\u003c\/td\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd\u003eUV\/IR-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e31mm Round Unmounted Filter\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR Cut \/ Luminance (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e31 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted Round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection, CMOS-Optimized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eLRGB Astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01 (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter size\u003c\/td\u003e\n\u003ctd\u003e31 mm (31mm)\u003cbr\u003e36 mm (36mm)\u003cbr\u003e50.4 mm (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter mounted\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Filter\u003c\/td\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eCMOS-optimized with Life-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm (31mm, 36mm)\u003cbr\u003e3 mm (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd\u003eUV\/IR-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e36mm Round Unmounted Filter\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR Cut \/ Luminance (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted Round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection, CMOS-Optimized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eLRGB Astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01 (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter size\u003c\/td\u003e\n\u003ctd\u003e31 mm (31mm)\u003cbr\u003e36 mm (36mm)\u003cbr\u003e50.4 mm (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter mounted\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Filter\u003c\/td\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eCMOS-optimized with Life-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm (31mm, 36mm)\u003cbr\u003e3 mm (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd\u003eUV\/IR-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e50.4mm Round Unmounted Filter\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR Cut \/ Luminance (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e50.4mm Round, Unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection, CMOS-Optimized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eLRGB Astrophotography\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01 (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter size\u003c\/td\u003e\n\u003ctd\u003e31 mm (31mm)\u003cbr\u003e36 mm (36mm)\u003cbr\u003e50.4 mm (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eCMOS-optimized with Life-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm (31mm, 36mm)\u003cbr\u003e3 mm (50.4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e50x50mm Square Filter\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eLuminance (UV\/IR-Cut)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e50 x 50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted Square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eCMOS-Optimized, Anti-Reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eCMOS-optimized with Life-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e65x65mm Square Filter\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR Cut \/ Luminance (L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e65x65 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eUnmounted Square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eCMOS-Optimized, Anti-Reflective\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eCMOS-optimized with Life-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e50.4mm Round Unmounted Filter\u003c\/h3\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader UV\/IR-Cut \/ L-Filter 50.4mm\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFilter Storage Box\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e50x50mm Square Filter\u003c\/h3\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader UV\/IR-Cut \/ L-Filter 50x50mm\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Cleaning_and_Maintenance_of_Optics_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Cleaning and Maintenance of Optics Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Filter_Problems_FAQ_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Filter Problems FAQ Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_FCCT_Filter_Changer_Camera_Tilter_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium FCCT Filter Changer Camera Tilter Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"2\" Round Unmounted Filter (Ø 47.4mm, FCCT)","offer_id":52913207247133,"sku":"BAA-2961573U","price":136.0,"currency_code":"CAD","in_stock":true},{"title":"31mm Round Unmounted Filter","offer_id":52913207279901,"sku":"BAA-2961571","price":101.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Round Unmounted Filter","offer_id":52913207312669,"sku":"BAA-2961572","price":116.0,"currency_code":"CAD","in_stock":true},{"title":"50.4mm Round Unmounted Filter","offer_id":52913207345437,"sku":"BAA-2961574","price":197.0,"currency_code":"CAD","in_stock":true},{"title":"50x50mm Square Filter","offer_id":52913207378205,"sku":"BAA-2961575","price":255.0,"currency_code":"CAD","in_stock":true},{"title":"65x65mm Square Filter","offer_id":52913207410973,"sku":"BAA-2961576","price":357.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-FCCT-Filter-UV-IR-Cut-L-Filter-2-unmounted-47-4-mm-CMOS-optimized-1_45bc1a90-67c0-48dd-be2c-1eea6ddcfb16.jpg?v=1789088132"},{"product_id":"player-one-uvenus-1-25-inch-uv-pass-filter-e-series","title":"Player One UVenus UV-Pass Filter E-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReveals Cloud Detail on Venus\u003c\/li\u003e\n\u003cli\u003eUV-Pass Band Optimized for Planetary Imaging\u003c\/li\u003e\n\u003cli\u003eE-Series High-Quality Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003e1.25\" Mounted Filter Format\u003c\/li\u003e\n\u003cli\u003eMulti-Layer Coatings for High Contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eUVenus 1.25″ UV-PASS Filter E-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One UVenus 1.25″ UV-PASS Filter is engineered for the specific challenge of imaging Venus, isolating the ultraviolet wavelengths reflected by the planet's dense cloud tops. By rejecting visible and infrared light, this 1.25\" filter allows your CMOS or CCD camera to capture the subtle swirls and dark markings within Venus's atmosphere that are otherwise invisible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRevealing Venus's Atmosphere: A Dedicated UV-Pass Filter\u003c\/h3\u003e\n\u003cp\u003eTo the naked eye or a standard camera, Venus appears as a brilliant but featureless crescent. Its true atmospheric dynamics are hidden in the ultraviolet spectrum, where its sulphuric acid clouds show significant contrast. The UVenus filter is designed to transmit only this UV light, transforming Venus from a flat disc into a world with discernible weather patterns.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eE-Series Construction: High-Contrast Substrate and Coatings\u003c\/h3\u003e\n\u003cp\u003eAs part of Player One's E-series, the UVenus filter is built on a high-quality optical glass substrate for maximum image clarity. Multi-layer composite coatings are applied to both surfaces to ensure high transmission of the desired UV wavelengths while suppressing reflections and internal ghosting, which is critical for maintaining contrast against Venus's bright glare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlayer One E-Series vs. S-Series Filters: What's the Upgrade?\u003c\/h3\u003e\n\u003cp\u003eThe E-series represents a significant step up from Player One's S-series filters. The key distinctions lie in the manufacturing standards and materials used.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Substrate:\u003c\/strong\u003e The E-series uses a higher grade of optical glass, resulting in a cleaner, more uniform transmission profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Technology:\u003c\/strong\u003e E-series filters employ a more advanced multi-layer composite coating process, designed to deliver higher contrast and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Application:\u003c\/strong\u003e While S-series filters are excellent general-purpose tools, E-series filters are optimized for dedicated imagers seeking professional-level results from modern CMOS and CCD cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a UVenus filter to see clouds on Venus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eVenus's atmosphere is extremely thick and reflective, making it appear featureless in visible light. However, specific chemical absorbers in the upper cloud deck create dark patterns that are only visible in ultraviolet light. The \u003cstrong\u003ePlayer One UVenus filter\u003c\/strong\u003e isolates this specific part of the spectrum, allowing a monochrome camera to capture these elusive atmospheric details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the UVenus 1.25″ filter for anything other than Venus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile its primary purpose is imaging Venus, a UV-pass filter can also be used for specialized imaging of Jupiter's and Saturn's upper atmospheric hazes. However, its applications are limited. This is a highly specialized filter and is not suitable for general planetary, lunar, or deep-sky imaging, as it blocks all visible light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Player One E-series UVenus filter different from the S-series?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe E-series is an upgraded line built to a higher standard. It uses a higher-quality optical glass substrate and more advanced multi-layer coatings compared to the S-series. This results in higher contrast and images better optimized for demanding CMOS and CCD astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the UVenus filter work with my monochrome planetary camera on an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. An 8\" SCT paired with a high-speed monochrome camera is an ideal setup for using the UVenus filter. The filter is optimized for modern CMOS\/CCD sensors, and the aperture of an 8\" telescope gathers enough light in the UV spectrum to allow for the short exposures needed to freeze atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see Venus's clouds visually with the UVenus filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The human eye is not sensitive to ultraviolet light. This filter blocks nearly all visible light, so when looking through it, you will see little to nothing. It is strictly an imaging filter designed for use with a camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an Atmospheric Dispersion Corrector (ADC) when imaging Venus with the UVenus filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is highly recommended. Atmospheric dispersion is much more severe at ultraviolet wavelengths than in visible light. When Venus is at lower altitudes, an ADC is essential to correct for the color fringing caused by the atmosphere and achieve a sharp image with the UVenus filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eE-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player_One_2026_Product_Catalog_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913424793885,"sku":"POA-UV125E","price":209.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"player-one-ch4-8nm-1-25-inch-filter-e-series","title":"Player One CH4 8nm Filter E-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIsolates the 8nm methane (CH4) absorption band\u003c\/li\u003e\n\u003cli\u003eStandard 1.25″ filter cell format\u003c\/li\u003e\n\u003cli\u003eOptimized for modern CMOS and CCD planetary cameras\u003c\/li\u003e\n\u003cli\u003eE-series features high-quality optical glass and multi-layer coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCH4 8nm 1.25″ Filter E-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One CH4 8nm 1.25″ E-series Filter isolates the specific methane absorption band, darkening the methane-rich belts of Jupiter and Saturn to dramatically increase the visibility of high-altitude storms and atmospheric features. This E-series filter is built to a higher standard using high-quality optical glass and advanced multi-layer coatings, optimized for the high sensitivity of modern CMOS and CCD sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTargeting Gas Giants: The 8nm Methane Bandpass\u003c\/h3\u003e\n\u003cp\u003eMethane gas in the atmospheres of Jupiter and Saturn strongly absorbs sunlight. This filter's narrow 8nm bandpass is centered on this absorption line, making methane-rich areas appear very dark. Features at higher altitudes, above the main methane layers—such as bright equatorial zones and prominent storms like the Great Red Spot—reflect sunlight before it is absorbed and therefore stand out with exceptional contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eE-Series Optics for CMOS\/CCD Imaging\u003c\/h3\u003e\n\u003cp\u003eThe E-series represents an upgrade in optical manufacturing, designed specifically for astrophotography with modern cameras. Each filter uses a high-quality glass substrate and multi-layer composite coatings to ensure high transmission within the narrow bandpass while suppressing unwanted out-of-band light. This construction minimizes halos and internal reflections, preserving the fine details captured by your sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlayer One E-Series vs. S-Series: An Upgraded Standard\u003c\/h3\u003e\n\u003cp\u003ePlayer One offers two filter lines, and the E-series is the premium option for imagers seeking the best possible results. While the S-series provides excellent value, the E-series is manufactured to a higher standard.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrate and Coatings:\u003c\/strong\u003e The E-series employs higher quality optical glass and more advanced multi-layer coating technology than the S-series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Optimization:\u003c\/strong\u003e This upgraded construction is specifically aimed at maximizing the signal-to-noise ratio for sensitive CMOS and CCD cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Player One E-series CH4 8nm filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose of the \u003cstrong\u003ePlayer One CH4 8nm filter\u003c\/strong\u003e is to enhance the contrast of atmospheric features on Jupiter and Saturn. By selectively passing light only in the methane absorption band, it darkens the main cloud belts, making high-altitude phenomena like storms, ovals, and bright zones appear much more prominent in monochrome images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 8nm bandpass on the CH4 filter affect my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe narrow \u003cstrong\u003e8nm bandpass\u003c\/strong\u003e is a trade-off. It provides very high contrast by rejecting almost all light outside the methane line, but it also significantly dims the image. This requires longer exposure times or higher gain settings, making it best suited for planetary cameras with high sensitivity and low read noise. It is not suitable for visual observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main difference between the Player One E-series and S-series filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eE-series is an upgraded version of the S-series\u003c\/strong\u003e. According to Player One, the E-series uses a higher quality optical glass substrate and more advanced multi-layer composite coating technology. This results in a filter manufactured to a higher standard, optimized for professional results with modern CMOS and CCD cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 1.25\" E-series CH4 filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is designed exclusively for imaging. The 8nm bandpass is extremely restrictive and passes so little light that the image through an eyepiece would be far too dim for the human eye to see any detail. It relies on the ability of a camera sensor to accumulate light over time (long exposures).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the E-series CH4 filter improve my images of Jupiter with a C8 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a Celestron 8\" SCT, the \u003cstrong\u003ePlayer One CH4 filter\u003c\/strong\u003e will allow you to capture a high-contrast map of Jupiter's upper atmosphere. The Great Red Spot, which can sometimes have low contrast in visible light, will appear as a bright, high-altitude feature against the darkened South Equatorial Belt. You will also be able to more clearly define the structure of the bright Equatorial Zone and detect other smaller storms (ovals) that are difficult to resolve in broadband images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Player One CH4 filter useful for imaging Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003eCH4 filter\u003c\/strong\u003e is excellent for Saturn. It enhances the contrast of the planet's own atmospheric belts and zones, similar to its effect on Jupiter. Critically, it also darkens the planet's globe significantly more than the icy rings, which do not contain methane. This makes the rings stand out with brilliant separation from the planet itself, creating a striking and detailed image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913424957725,"sku":"POA-CH4-125E","price":181.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"player-one-ir685nm-1-25-inch-ir-pass-filter-s-series","title":"Player One IR685nm  IR-Pass Filter S-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses infrared light with wavelengths greater than 685nm\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" filter format for broad compatibility\u003c\/li\u003e\n\u003cli\u003eSignificantly improves image stability by reducing atmospheric seeing effects\u003c\/li\u003e\n\u003cli\u003eEnhances contrast for high-resolution lunar and planetary imaging\u003c\/li\u003e\n\u003cli\u003eS-Series construction with double-sided multi-layer coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003ePlayer One IR685nm 1.25″ IR-Pass Filter S-series\u003c\/h2\u003e\n\u003cp\u003eThe Player One IR685nm 1.25″ IR-Pass Filter S-series isolates infrared light above the 685nm wavelength, arming your monochrome camera against poor atmospheric seeing. By blocking the shorter, more turbulent wavelengths of visible light, this filter transmits a more stable signal, allowing you to capture significantly sharper details on the Moon and planets through a standard 1.25\" filter thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eStabilize Seeing: Pass Only Wavelengths Above 685nm\u003c\/h3\u003e\n\u003cp\u003eAtmospheric turbulence, or \"seeing,\" is the primary barrier to sharp planetary imaging, as it scatters shorter wavelengths of light more severely. The IR685 filter combats this by creating a hard cutoff at 685nm, transmitting only deep red and near-infrared light which is far less susceptible to atmospheric distortion. This technique effectively \"freezes\" the image, revealing fine details that are otherwise blurred into a shimmering mess on nights of average seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Resolution Imaging in a 1.25\" Format\u003c\/h3\u003e\n\u003cp\u003eThe IR685 filter is a critical tool for extracting maximum lunar and planetary detail. For lunar imaging, the increased contrast in the infrared spectrum darkens the sky and sharpens the distinction between sunlit crater rims and shadowed floors. For planetary work, it's particularly effective for revealing faint, low-contrast features, most notably the elusive cloud bands of Uranus, a target where infrared imaging makes a decisive difference.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eS-Series Construction with Double-Sided Coatings\u003c\/h3\u003e\n\u003cp\u003eAs part of the Player One S-series, this filter is built on a high-quality optical glass substrate for maximum image fidelity. It features an upgraded double-sided, multi-layer composite coating that ensures high transmission of the desired infrared wavelengths while reflecting unwanted light. This advanced coating technology minimizes internal reflections and artifacts, preserving the high contrast needed for serious planetary work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Player One IR685nm filter help when imaging Jupiter with an 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn nights with unsteady air, the IR685nm filter will deliver a noticeably more stable image of Jupiter through an 8\" SCT. By cutting out the turbulent blue and green light, you can use longer exposures or higher gain to capture sharp infrared data of the cloud bands and the Great Red Spot. This data can then be used as a high-detail luminance layer for an RGB color image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Player One IR685nm filter to see the cloud bands on Uranus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is one of the primary applications for this filter. Uranus's cloud bands are notoriously faint in visible light but show significantly more contrast in the near-infrared spectrum. Using the IR685nm filter with a monochrome camera and a telescope of sufficient aperture is a proven method for successfully imaging these challenging features.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Player One IR685nm filter suitable for color cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is designed exclusively for \u003cstrong\u003emonochrome cameras\u003c\/strong\u003e. A color camera's sensor has a Bayer mask (red, green, and blue pixels) that blocks most of the infrared light from reaching the sensor, and only the red pixels would receive any significant signal. To take advantage of IR imaging, a monochrome camera is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of using the Player One IR685nm filter for lunar photography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantages are improved seeing and higher contrast. The IR685nm filter stabilizes the image, allowing you to resolve smaller craters, rilles, and mountain ranges. It also provides a \"daylight\" look to the lunar surface with very dark skies, making fine surface details stand out more clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Player One IR685nm filter work with my 1.25\" filter wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Player One IR685nm filter is housed in a standard 1.25\" cell with male M28.5x0.6 threads, making it fully compatible with any standard 1.25\" filter wheel, filter drawer, or eyepiece that accepts threaded filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Player One IR685nm filter compare to a standard red filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard red filter typically passes light from about 610nm upwards, including a significant amount of visible red light. The IR685nm filter provides a much deeper cut into the infrared, passing only light from 685nm and up. This results in a more dramatic improvement in seeing compared to a red filter, though it requires a camera with good sensitivity in the near-infrared.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eIR-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-on Wavelength\u003c\/td\u003e\n\u003ctd\u003e685nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM28.5x0.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eIR685nm 1.25″ IR-Pass Filter S-series\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Player_One_2026_Product_Catalog_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913425318173,"sku":"POA-IR685","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-IR685nm-1-25-IR-Pass-Filter-S-series-1_cdeb2d14-3be4-4fc2-9688-35e59747bd58.jpg?v=1789090900"},{"product_id":"player-one-ir850nm-1-25-inch-ir-pass-filter-s-series","title":"Player One IR850nm IR-Pass Filter S-series - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses Infrared Light at 850nm\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" Filter Size\u003c\/li\u003e\n\u003cli\u003eBlocks Visible and Ultraviolet Light\u003c\/li\u003e\n\u003cli\u003eHigh-Quality Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003eMulti-Layer Anti-Reflection Coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003ePlayer One IR850nm 1.25″ IR-Pass Filter S-series\u003c\/h2\u003e\n      \u003cp\u003eThe Player One IR850nm 1.25″ IR-Pass Filter isolates a narrow slice of the near-infrared spectrum centered at 850nm, blocking unwanted visible light to dramatically increase planetary contrast. Designed for the standard 1.25″ format, this filter is purpose-built to reveal high-contrast details on planets like Venus, which are only visible to a sensor sensitive to wavelengths beyond 850nm.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eRevealing Venus's Clouds at 850nm\u003c\/h3\u003e\n      \u003cp\u003eFor planetary imagers, Venus presents a unique challenge: a visually blank disc hiding a complex, dynamic atmosphere. The IR850nm filter is the key to unlocking it, allowing you to capture the faint thermal signatures of the planet's cloud tops. These structures are completely invisible in the visible spectrum but show remarkable detail in the near-infrared.\u003c\/p\u003e\n      \u003cp\u003eBy capturing data through this filter and combining it with images taken through an ultraviolet (UV) filter, you can create stunning composite photographs that show multiple layers of the Venusian atmosphere. This multi-band approach transforms the planet from a bright, featureless orb into a world of subtle swirls and patterns.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eThe 850nm Advantage: Cutting Through Atmospheric Turbulence\u003c\/h3\u003e\n      \u003cp\u003eThe primary benefit of imaging at a long wavelength like 850nm is its ability to mitigate the effects of atmospheric seeing. Shorter wavelengths of light (like blue and green) are scattered more easily by turbulence in Earth's atmosphere, resulting in a soft, blurry image. Infrared light is far less affected, leading to a steadier, sharper final result.\u003c\/p\u003e\n      \u003cp\u003eThis makes the IR850nm filter an essential tool for high-resolution imaging of the Moon and other planets, especially on nights of average or poor seeing. It acts as a \"seeing stabilizer,\" allowing you to capture fine details like lunar rilles and Martian surface features that would otherwise be lost to atmospheric blurring.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary use of the Player One IR850nm filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Player One IR850nm filter is designed for high-resolution planetary and lunar imaging. It blocks visible light and passes only near-infrared light at 850nm, which significantly reduces the blurring effects of atmospheric turbulence (seeing) and reveals details on planets like Venus that are invisible in the visible spectrum.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the IR850nm filter help with imaging Venus?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eVenus's dense cloud cover appears almost featureless in visible light. The \u003cstrong\u003eIR850nm filter\u003c\/strong\u003e allows your camera's sensor to capture the thermal emissions and subtle variations in the upper cloud deck. This data can be combined with images taken through a UV filter to create a comprehensive, multi-spectral portrait of the planet's atmosphere.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the IR850nm filter for deep-sky imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, this filter is not recommended for deep-sky imaging. Most nebulae and galaxies are very faint in the near-infrared, and camera sensors have lower sensitivity at 850nm. This filter is specifically a tool for bright objects like the Moon and planets where cutting through atmospheric seeing is the primary goal.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1.25\" IR850nm filter work with my existing filter wheel and camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the \u003cstrong\u003ePlayer One IR850nm filter\u003c\/strong\u003e is housed in a standard 1.25\" cell with M28.5x0.6 threads. It is compatible with any standard 1.25\" filter wheel, filter drawer, or camera nosepiece that accepts threaded filters.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I choose an 850nm filter over a 685nm IR-pass filter for lunar imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAn \u003cstrong\u003e850nm filter\u003c\/strong\u003e provides a greater seeing-reduction effect than a 685nm filter because its passband is further into the infrared spectrum. On nights of particularly poor seeing, the 850nm filter will deliver a steadier image. The trade-off is that less light is available at 850nm, requiring longer exposures or higher gain, which is why the 685nm is often used when seeing is more stable.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a monochrome or color camera for the IR850nm filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA \u003cstrong\u003emonochrome camera\u003c\/strong\u003e is strongly recommended. Color cameras have a Bayer matrix (a grid of red, green, and blue filters) over the sensor, which blocks a significant portion of the incoming infrared light and reduces both sensitivity and resolution. A monochrome sensor utilizes every pixel to capture the 850nm signal for the best possible result.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e850nm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eIR-Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eS-series\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eIR850nm 1.25″ IR-Pass Filter\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\u003ca title=\"Player One 2-Year Warranty\" href=\"https:\/\/davidastro.com\/pages\/player-one-warranty-policy\" target=\"_blank\"\u003ePlayer One 2-Year Warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":52913425613085,"sku":"POA-IR850","price":39.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/PlayerOne-IR850nm-1-25-IR-Pass-Filter-S-series-1_43a3799c-a054-4fae-b2a3-c24eace4525e.jpg?v=1789090908"},{"product_id":"daystar-2-inch-uv-ir-filter","title":"Daystar 2\" UV\/IR Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2\" Barrel Size\u003c\/li\u003e\n\u003cli\u003eBlocks Ultraviolet (UV) and Infrared (IR) Wavelengths\u003c\/li\u003e\n\u003cli\u003ePasses the Full Visible Spectrum\u003c\/li\u003e\n\u003cli\u003eFunctions as an Essential Luminance (L) Filter\u003c\/li\u003e\n\u003cli\u003eReduces Star Bloat and Improves Sharpness in Refractors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003e2\" UV\/IR Filter\u003c\/h2\u003e\n\u003cp\u003eThis 2\" UV\/IR Cut Filter is a fundamental tool for digital astrophotography, designed to isolate the visible spectrum that your telescope's optics are corrected for. By aggressively blocking unwanted ultraviolet and infrared light, it prevents the associated star bloat and loss of contrast common in refractive systems, resulting in a significantly sharper final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUV\/IR Cut: Sharpening Images by Removing Unfocused Light\u003c\/h3\u003e\n\u003cp\u003eRefractor telescopes are designed to bring visible light to a sharp, single point of focus. However, UV and IR wavelengths focus at different planes, creating a form of chromatic aberration that softens the image and reduces fine detail. This filter solves the problem by simply removing that unfocused light before it ever reaches your camera sensor.\u003c\/p\u003e\n\u003cp\u003eBy eliminating these out-of-band wavelengths, stars become tighter, and contrast on planetary and deep-sky targets is noticeably improved. The filter also serves a secondary purpose by blocking thermal energy (IR), which can help reduce heat build-up in your downstream filters and diagonal during extended imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Essential Luminance Filter for Refractor Astrophotography\u003c\/h3\u003e\n\u003cp\u003eFor monochrome LRGB imaging or when shooting with a One-Shot-Color (OSC) camera, this filter provides the critical luminance (L) signal. The luminance channel is responsible for all the image detail, and a clean signal containing only visible light is paramount for achieving the highest possible resolution.\u003c\/p\u003e\n\u003cp\u003eUsing this filter ensures that your luminance data is free from the bloating effects of IR and the low contrast caused by unfocused UV. It allows your sensor to capture every photon of the visible spectrum your refractor was built to resolve, producing a crisp, detailed foundation upon which to stack your color data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a 2\" UV\/IR Cut Filter with my refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eRefractor lenses are corrected to focus visible light sharply. They do not focus ultraviolet (UV) and infrared (IR) light at the same point, which leads to soft, bloated stars and reduced image contrast. A UV\/IR Cut filter blocks these wavelengths, ensuring only the well-focused visible light reaches your camera sensor, resulting in a much sharper image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 2\" UV\/IR filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can, you are unlikely to notice any benefit. The human eye has very low sensitivity to the deep UV and IR wavelengths this filter blocks, so the visual image will appear largely unchanged. Its primary benefit is for digital sensors, which are highly sensitive to this out-of-band light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this 2\" UV\/IR Cut Filter help when imaging the Andromeda Galaxy (M31) with a color camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen imaging a galaxy like M31 with a one-shot-color (OSC) camera, your sensor is still capturing unfocused IR light, which causes stars to appear larger and more bloated, obscuring fine detail in the galaxy's dust lanes and star-forming regions. Using this filter cleans up the entire image by ensuring that every pixel, regardless of its color, is only recording sharp, focused visible light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this UV\/IR Cut filter the same as a light pollution filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, they serve different purposes. A \u003cstrong\u003eUV\/IR Cut filter\u003c\/strong\u003e blocks light at the invisible ends of the spectrum. A \u003cstrong\u003elight pollution filter\u003c\/strong\u003e (like a UHC or CLS filter) is designed to block specific, narrow bands of visible light associated with artificial lighting (e.g., sodium and mercury vapor lamps) while passing nebula emission lines. This filter will not reduce skyglow from city lights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2\" UV\/IR Cut Filter improve images from my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While this filter is particularly critical for refractors, it is also beneficial for reflector-based systems like Schmidt-Cassegrains (SCTs) and Newtonians. Though these scopes do not suffer from the same chromatic aberration, using a UV\/IR Cut filter as your luminance filter ensures all your LRGB filters are parfocal, meaning you won't have to refocus when switching between them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 2\" UV\/IR Cut Filter protect other equipment?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, by blocking infrared radiation, the filter also blocks a significant amount of heat. This can be beneficial in protecting more sensitive and expensive filters placed after it in the optical train, such as narrowband filters, from potential heat-related damage or degradation over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eUV\/IR Cut (Luminance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\" (M48x0.75 Threads)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" UV\/IR Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWarranty information for this product is not available. Please contact us for details.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":52935165804829,"sku":"DAY-DSIUV2","price":175.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/DaystarFilters-2-UV-IR-Filter-1_46accae2-51af-4a6a-bd27-5412a6c53c92.jpg?v=1789520828"},{"product_id":"optolong-clear-focusing-filter","title":"Optolong Clear Focusing Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAchieve Critical Focus with Dim Stars\u003c\/li\u003e\n\u003cli\u003eTransmission \u0026gt;98.5% Across the Visible Spectrum\u003c\/li\u003e\n\u003cli\u003eλ\/4 Transmitted Wavefront for Image Integrity\u003c\/li\u003e\n\u003cli\u003eParfocal with Other 1.85mm Optolong Filters\u003c\/li\u003e\n\u003cli\u003eFunctions as a High-Quality Sensor Dust Shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eOptolong Clear Focusing Filter\u003c\/h2\u003e\n      \u003cp\u003eThe Optolong Clear Focusing Filter is a dedicated utility filter designed to solve one of astrophotography's most persistent challenges: achieving perfect focus with dim stars. By passing over 98.5% of visible light, this filter ensures your focusing star is as bright as possible, a critical advantage when narrowband or light pollution filters would otherwise render it nearly invisible. Constructed from B270 glass with a transmitted wavefront of λ\/4 and a thickness of 1.85mm, it maintains the optical path's integrity, allowing you to focus with confidence before swapping to your imaging filter.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-danger\"\u003e\n      \u003cdiv class=\"DAV-section-center\"\u003e\n          \u003ch3\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\" style=\"width: 20px; height: 20px; fill: currentColor; margin-right: 8px; vertical-align: text-bottom;\"\u003e\u003cpath d=\"M256 32c14.2 0 27.3 7.5 34.5 19.8l216 368c7.3 12.4 7.3 27.7 .2 40.1S486.3 480 472 480H40c-14.3 0-27.6-7.7-34.7-20.1s-7-27.8 .2-40.1l216-368C228.7 39.5 241.8 32 256 32zm0 128c-13.3 0-24 10.7-24 24V296c0 13.3 10.7 24 24 24s24-10.7 24-24V184c0-13.3-10.7-24-24-24zm32 224a32 32 0 1 0 -64 0 32 32 0 1 0 64 0z\"\u003e\u003c\/path\u003e\u003c\/svg\u003eCritical Safety Warning: Not for Solar Use\u003c\/h3\u003e\n          \u003cp\u003eThis filter is \u003cstrong\u003eNOT\u003c\/strong\u003e designed for solar observation. Looking at the Sun with this filter, or any filter not explicitly certified for safe solar viewing, will cause immediate and irreversible eye damage, including permanent blindness. Do not point your telescope at the Sun with this filter attached.\u003c\/p\u003e\n      \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAchieve Critical Focus with \u0026gt;98.5% Transmission\u003c\/h3\u003e\n      \u003cp\u003eNarrowband and aggressive light pollution filters drastically dim incoming starlight, making it difficult for autofocus routines to lock on or for you to judge manual focus accurately. The Optolong Clear Filter solves this by passing more than 98.5% of light across the entire 420-680nm visible spectrum. You simply use this filter to achieve a sharp, bright focus on a star, then swap it for your narrowband or LRGB filter to begin imaging, knowing your focus is already set.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eParfocal and Protective with λ\/4 Wavefront Flatness\u003c\/h3\u003e\n      \u003cp\u003eA focusing aid is useless if it degrades your image or shifts the focal point. The Optolong Clear Filter is made from B270 substrate polished to a λ\/4 transmitted wavefront with 30s parallelism, ensuring it won't introduce aberrations. Its 1.85mm thickness makes it parfocal with other Optolong filters of the same thickness, minimizing the need to refocus after a filter change. It also serves as an excellent dust shield, protecting your camera sensor or reducer optics from dust during long imaging sessions.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need the Optolong Clear Focusing Filter? Can't I just focus without a filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile you can focus without a filter, adding a narrowband or LRGB filter into the optical path will slightly shift the focal point. The Optolong Clear Focusing Filter has a thickness of \u003cstrong\u003e1.85mm\u003c\/strong\u003e, designed to be parfocal with other Optolong filters. By focusing with this filter first, you ensure the focal point is correctly set for when you swap to your imaging filter, saving time and guaranteeing sharp results.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Optolong Clear Filter the same as a Luminance (L) filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. A Luminance filter is an imaging filter with specific UV and IR blocking characteristics. The Optolong Clear Filter is a utility filter designed purely for focusing. It passes a wider band of light (\u003cstrong\u003e\u0026gt;98.5%\u003c\/strong\u003e from 420-680nm) to maximize star brightness for focusing software and visual confirmation. It is not intended for capturing final image data.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Optolong Clear Filter help when imaging the Horsehead Nebula (B33) with a narrowband filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eImaging Barnard 33 requires a strong Hydrogen-alpha filter, which blocks almost all starlight except for a single wavelength. This makes focusing stars extremely dim and difficult. With the Optolong Clear Filter, you can select a nearby bright star like Alnitak, achieve perfect focus using the full visible spectrum, lock your focuser, and then switch to your Ha filter to capture the faint nebulosity without struggling to see the dim, red-only star.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Optolong Clear Filter improve focusing with my modified DSLR and f\/5 Newtonian?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. A modified DSLR is more sensitive to a broader spectrum of light, and this filter's \u003cstrong\u003e\u0026gt;98.5%\u003c\/strong\u003e transmission takes full advantage of that. In an f\/5 Newtonian, stars will be bright and sharp through the Clear Filter, allowing your camera's live view or focusing software to achieve a much more accurate focus than with a light pollution or narrowband filter installed.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I leave the Optolong Clear Filter in the optical train as a dust shield?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. With its high-quality \u003cstrong\u003eB270\u003c\/strong\u003e substrate and \u003cstrong\u003eλ\/4\u003c\/strong\u003e wavefront, it will not degrade your image quality. It acts as an effective barrier, preventing dust from settling on your camera sensor or reducer optics during a long imaging night.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Optolong Clear Filter for solar viewing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eNO. ABSOLUTELY NOT.\u003c\/strong\u003e This filter provides no protection from the Sun's harmful radiation. Using it for solar observation will cause instant and permanent blindness. Only use filters specifically designed and certified for safe solar observation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eB270\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAverage Transmission\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;98.5% (420-680nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSurface Quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30s\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e1.25\" Mounted, 2\" Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eOptolong Clear Focusing Filter (Selected Size)\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/optolong-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOptolong 3-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"1.25\" Mounted","offer_id":52941924565277,"sku":"OPT-12401","price":34.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Mounted","offer_id":52941924598045,"sku":"OPT-12402","price":42.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Optolong-Clear-focusing-filter-is-designed-to-highly-pass-the-visible-spectral-region-420-680nm-at-98-5-transmission-1_d5f8835e-290b-416b-b60e-680f79a67a1a.jpg?v=1789592420"},{"product_id":"optolong-night-sky-h-alpha-filter-ir-pass-630nm","title":"Optolong Night Sky H-Alpha IR Pass Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePasses Infrared Light \u0026gt;650nm\u003c\/li\u003e\n\u003cli\u003eBlocks Visible Light from 300-570nm\u003c\/li\u003e\n\u003cli\u003eAverage Transmission \u0026gt;90%\u003c\/li\u003e\n\u003cli\u003e1.85mm Thick Optical Glass Substrate\u003c\/li\u003e\n\u003cli\u003eλ\/4 Transmitted Wavefront\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25\" and 2\" Mounted Sizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eOptolong Night Sky H-Alpha IR Pass Filter\u003c\/h2\u003e\n\u003cp\u003eThe Optolong Night Sky H-Alpha IR Pass Filter is a specialized tool for planetary imagers seeking to overcome atmospheric turbulence. By aggressively blocking visible light in the 300-570nm range and passing infrared wavelengths with over 90% average transmission, this filter isolates the steadiest light for a sharper luminance channel. The filter is built on a 1.85mm optical glass substrate with a λ\/4 transmitted wavefront, ensuring it preserves the detail captured by your telescope.\u003c\/p\u003e\n\u003cdiv class=\"DAV-warning-box\"\u003e\n\u003csvg viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M256 32c14.2 0 27.3 7.5 34.5 19.8l216 368c7.3 12.4 7.3 27.7 .2 40.1S486.3 480 472 480H40c-14.3 0-27.6-7.7-34.7-20.1s-7-27.8 .2-40.1l216-368C228.7 39.5 241.8 32 256 32zm0 128c-13.3 0-24 10.7-24 24V296c0 13.3 10.7 24 24 24s24-10.7 24-24V184c0-13.3-10.7-24-24-24zm32 224a32 32 0 1 0 -64 0 32 32 0 1 0 64 0z\" fill=\"#D70000\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This filter is NOT for solar observation. DO NOT look at the Sun with this or any Optolong filter not explicitly designed for solar viewing. Failure to observe this warning will result in permanent blindness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSharpening Luminance Beyond 640nm for Planetary Imaging\u003c\/h3\u003e\n\u003cp\u003eAtmospheric seeing, the turbulence that blurs celestial objects, has a greater effect on shorter wavelengths of light like blue and green. The Optolong IR Pass filter defeats this by acting as a bouncer at the door; it completely blocks light below 570nm. It begins passing light around 640nm and achieves over 95% transmission beyond 650nm, capturing a signal composed of much steadier photons. \u003c\/p\u003e\n\u003cp\u003eWhen used as a replacement for a standard luminance (L) filter in an LRGB workflow, this IR-pass signal produces a dramatically sharper monochrome image. When you combine this superior IR luminance with your color RGB data, the final composite image reveals finer details in Jupiter's cloud bands, the Cassini Division in Saturn's rings, and subtle features on Mars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eλ\/4 Wavefront and 1.85mm Substrate for Optical Purity\u003c\/h3\u003e\n\u003cp\u003eA filter is useless if it degrades the image your telescope produces. Optolong ensures optical integrity by using a high-quality glass substrate polished to a transmitted wavefront of λ\/4 or better. This level of precision means the filter will not introduce aberrations or distortions into the light path.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eParfocal Design:\u003c\/strong\u003e The \u003cstrong\u003e1.85mm\u003c\/strong\u003e substrate thickness is designed to be nearly parfocal with other common filters, minimizing the need to refocus when switching between filters in a wheel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Coatings:\u003c\/strong\u003e Ion-assisted deposition coatings provide resistance to scratching and ensure the filter's central wavelength (CWL) remains stable regardless of temperature changes during an imaging session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Precision:\u003c\/strong\u003e A surface quality of \u003cstrong\u003e60\/40\u003c\/strong\u003e and parallelism of \u003cstrong\u003e30 arcseconds\u003c\/strong\u003e guarantee a clean, artifact-free image without internal reflections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIR Pass vs. Standard Luminance: A Specialist Filter for Seeing\u003c\/h3\u003e\n\u003cp\u003eWhile a standard luminance filter aims to capture the entire visible spectrum for maximum brightness, it also captures all the atmospheric blurring that comes with it. The Optolong H-Alpha IR Pass filter takes a different approach, prioritizing sharpness over total brightness by selectively choosing which light to record.\u003c\/p\u003e\n\u003cp\u003eA standard L-filter is a generalist, excellent for deep-sky objects where collecting every photon matters most. This IR Pass filter is a specialist. It intentionally discards the unsteady visible-spectrum light to create a superior luminance foundation for planetary IR-LRGB imaging, delivering a level of detail that a standard L-filter cannot achieve on nights of average or poor seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Optolong H-Alpha IR Pass filter to view the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e This filter is designed for night sky imaging and provides no protection from the Sun's harmful radiation. Looking at the Sun with this filter, even for a moment, will cause immediate and permanent eye damage, including blindness. Only use filters specifically designed and certified for safe solar observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Optolong IR Pass filter improve my images of Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eJupiter's low altitude for northern hemisphere observers often means looking through turbulent air. This filter cuts through that \"seeing\" by blocking the most easily scattered blue and green light (\u003cstrong\u003e300-570nm\u003c\/strong\u003e) and only passing the more stable, longer red and infrared wavelengths. The result is a much sharper black-and-white luminance image that can be combined with RGB data to show fine details in the Great Red Spot and intricate swirls in the cloud belts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Optolong H-Alpha IR Pass filter useful for deep-sky imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eGenerally, no. This filter is a specialist tool for planetary, lunar, and solar system imaging. For deep-sky objects like galaxies and nebulae, you want to collect as much light as possible across the visible spectrum. A standard Luminance (L) filter or narrowband filters (H-alpha, OIII, SII) are the correct tools for deep-sky astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Optolong filter with my one-shot-color (OSC) camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for monochrome cameras to create a luminance channel, you can use it with a color camera. By enabling monochrome mode (or debayering the final image as black-and-white), you can capture a sharp IR-only image. However, its primary benefit is realized when combined with separate RGB data in an IR-LRGB composite, a technique best suited for monochrome cameras and filter wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need to refocus my 8\" f\/10 SCT when switching to the Optolong 1.85mm IR Pass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1.85mm\u003c\/strong\u003e thickness is designed to be nearly parfocal with many other brands of 1.25\" and 2\" filters. While you should always check critical focus, the amount of adjustment needed will be minimal, if any. This is a significant advantage when using a filter wheel, as it saves time and prevents you from losing your target while refocusing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this filter called \"H-Alpha\" if it's an IR Pass filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe name can be confusing. The filter's transmission starts to ramp up near the Hydrogen-alpha wavelength (656nm), so it passes H-alpha light and everything with a longer wavelength. However, its primary function isn't narrowband imaging but rather to serve as a very long-pass filter that uses the infrared spectrum to stabilize planetary images against atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Material\u003c\/td\u003e\n\u003ctd\u003eOptical glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Transmission\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Range\u003c\/td\u003e\n\u003ctd\u003e300-570nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitted Wavefront RMS\u003c\/td\u003e\n\u003ctd\u003eλ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30 arcseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e1.25\" Mounted, 2\" Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOptolong Night Sky H-Alpha IR Pass Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Plastic Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/optolong-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOptolong 3-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong","offers":[{"title":"1.25\" Mounted","offer_id":52941927121181,"sku":"OPT-12801","price":111.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Mounted","offer_id":52941927153949,"sku":"OPT-12802","price":167.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Optolong-Night-Sky-H-Alpha-filter-IR-Pass-650nm-with-50-transition-from-blocking-to-passing-at-about-640nm-and-95-1_e2f058c9-b594-4cd2-a48c-cf16875a7fc1.jpg?v=1789592440"}],"url":"https:\/\/davidastro.com\/fr-us\/collections\/uv-ir-clear-and-specialty-filters.oembed","provider":"David Astro","version":"1.0","type":"link"}