{"product_id":"antlia-2-5nm-sho-ultra-filter-2-mounted","title":"Filtres à bande ultra-étroite Antlia 2,5 nm SHO 2’’ \u0026 36mm","description":"\u003ch2\u003eAntlia 2.5nm SHO Ultra Filtre 2’’ \u0026amp; 36mm\u003c\/h2\u003e\n\u003cp\u003eLes filtres de la série Antlia SHO 2,5 nm Ultra sont fabriqués avec du verre de quartz et subissent des processus de revêtement contrôlés avec précision pour garantir des performances optimales. La série Ultra 2,5 nm est conçue avec une FWHM (pleine largeur à mi-hauteur) de 2,5 nm +0,3\/-0,1 nm et une efficacité de transmission \u0026gt; 93-95 % à la longueur d'onde centrale.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e Le verre de quartz possède un coefficient de dilatation thermique ultra-faible avec des propriétés thermiques et mécaniques exceptionnelles. Lorsqu'ils sont associés à des procédés de revêtement avancés, ces filtres présentent une durabilité remarquable pour l'imagerie et la recherche dans les conditions environnementales les plus difficiles.\u003cbr\u003e\u003cbr\u003e \u003cbr\u003ePar rapport à la série 3 nm Pro, la série Ultra 2,5 nm revêtue de verre de quartz présente une transmittance plus élevée avec Ha\/SII≥95 % et OIII≥93 %. On estime que ces filtres améliorent le signal de 20 à 30\u0026nbsp;% dans vos images. De plus, la série Ultra dispose d'un FWHM plus étroit de 2,5 nm + 0,3\/-0,1 nm, ce qui se traduit par un rapport signal sur bruit exceptionnellement élevé pour la photographie du ciel profond.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLes principales fonctionnalités et application\u0026nbsp;:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e- Transmittance élevée (Ha\/SII≥95%，OIII≥93%) et le FWHM étroit 2.5nm +0.3\/-0.1nm pour maximiser le contraste;\u003c\/li\u003e\n\u003cli\u003e- Le spectre à sommet plat minimise la perte de transmission due au décalage de la longueur d'onde centrale (CWL)\u0026nbsp;;\u003c\/li\u003e\n\u003cli\u003e- La spécification de blocage hors bande est conçue pour OD5 (0,001 %) pour bloquer les interférences d'autres longueurs d'onde et minimiser les halos autour des étoiles brillantes ;\u003c\/li\u003e\n\u003cli\u003e- Fabriqué en verre de quartz, excellente durabilité et stabilité thermique, meilleure résistance aux fractures et aux rayures, meilleure résistance du revêtement au nettoyage;\u003c\/li\u003e\n\u003cli\u003e- Les filtres sont résistants aux rayures；\u003c\/li\u003e\n\u003cli\u003e- Épaisseur de filtre identique aux normes existantes et polissage fin double face, avec le plus grand soin pour la parfocalité ;\u003c\/li\u003e\n\u003cli\u003e- Les filtres SHO 2,5 nm Ultra sont recommandés pour une utilisation dans l'optique avec un rapport de mise au point ≥ f\/3,5 pour de meilleures performances optiques ;\u003c\/li\u003e\n\u003cli\u003e- 100\u0026nbsp;% de la production sont numérisés individuellement, toutes les données de transmission et de blocage (OD) dans la boîte sont réelles, les spectres et la transmission mesurés\u0026nbsp;;\u003c\/li\u003e\n\u003cli\u003e- Tous les filtres Antlia sont revêtus jusqu'au bord du substrat et les filtres à bande étroite non montés sont noircis pour éliminer les réflexions internes de la lumière parasite\u0026nbsp;;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnneau de filtre :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnneau standard Antlia: 1,25 '' (M28,5 * 0,6) ， 2 '' (M48 * 0,75)\u003c\/p\u003e\n\u003cp\u003eCellule de filtre ultra-mince pour minimiser le vignettage en maximisant l'ouverture claire possible\u003c\/p\u003e\n\u003cp\u003eFinition anodisée noire\u003c\/p\u003e\n\u003cp\u003eGravure au laser sans décoloration\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNon recommandé:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eImagerie solaire\u003c\/p\u003e\n\u003cp\u003eObservation visuelle de nuit\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePas permis:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNE PAS REGARDER LE SOLEIL AVEC CE FILTRE\u003c\/p\u003e\n\u003cp\u003eDe graves lésions oculaires en résulteront si vous ne respectez pas l'avertissement.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCourbes spectrales\u0026nbsp;:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-size-adjust: 100%; margin: 0px 0px 1px; color: #666666; font-family: 微软雅黑; font-size: 14px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"text-size-adjust: 100%; font-size: 13px; font-family: Arial;\"\u003e\u003c\/span\u003e\u003cimg style=\"text-size-adjust: 100%; border: 0px; vertical-align: top; max-width: 100%; height: auto !important;\" class=\"need_fix\" alt=\"Ha 2.5nm ultra.jpg\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgg_S1owYo3c-58wQwwQo4-wU.jpg\" width=\"1345\" height=\"767\"\u003e\u003cimg style=\"text-size-adjust: 100%; border: 0px; vertical-align: top; max-width: 100%; height: auto !important;\" class=\"need_fix\" alt=\"OIII 2.5nm ultra.jpg\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgg_S1owYorqjy_wEwwQo4-wU.jpg\" width=\"1345\" height=\"767\"\u003e\u003cimg style=\"text-size-adjust: 100%; border: 0px; vertical-align: top; max-width: 100%; height: auto !important;\" class=\"need_fix\" alt=\"SII 2.5nm ultra.jpg\" src=\"http:\/\/20564242.s21i.faiusr.com\/2\/2\/ABUIABACGAAgg_S1owYoxoH3HjDDCjiABg.jpg\" width=\"1347\" height=\"768\"\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003c\/h3\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eSpécifications techniques\u003c\/h3\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; font-family: Calibri; font-size: 11pt; color: #000; background-color: transparent;\" 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cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 14.25pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: nowrap; text-align: left; vertical-align: top; border-right: 1px solid #000000; border-left: 1px solid #000000; border-top: 1px solid #000000;\"\u003e\u003cspan style=\"font-family: Times New Roman; font-size: 10pt; vertical-align: baseline;\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\" rowspan=\"2\" colspan=\"1\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eHydrogène-alpha\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\" rowspan=\"2\" colspan=\"1\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eSoufre-II\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\" rowspan=\"2\" colspan=\"1\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eOxygène III\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 14.25pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: nowrap; vertical-align: bottom; border-right: 1px solid #000000;\"\u003e\u003cspan style=\"vertical-align: baseline;\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.25pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border-right: 1px solid #000000; border-bottom: 1px solid #000000; border-left: 1px solid #000000;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eFWHM\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e2,5\u0026nbsp;nm +0,3\/-0,1\u0026nbsp;nm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e2,5\u0026nbsp;nm +0,3\/-0,1\u0026nbsp;nm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e2,5\u0026nbsp;nm +0,3\/-0,1\u0026nbsp;nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 51pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eCWL (longueur d'onde centrale)\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e656.3nm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e672.4nm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e500.7nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.25pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eTransmission maximale\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e95%\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e95%\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e93%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 14.25pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eBlocage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 143.1818181818182pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\" rowspan=\"1\" colspan=\"3\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e≥OD5\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 38.25pt;\"\u003e\n\u003ctd style=\"width: 47.727272727272734pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003eÉpaisseur du filtre\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 143.1818181818182pt; white-space: normal; text-align: center; vertical-align: top; border: 1px solid #000000;\" rowspan=\"1\" colspan=\"3\"\u003e\u003cspan style=\"color: #4b4b4b; font-family: Arial; font-size: 10pt; font-weight: bold; vertical-align: baseline;\"\u003e2mm+\/-0.05mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eDans la boite\u003c\/h3\u003e\n\u003cp\u003eFiltres sélectionnés\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"value\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eGarantie et manuels\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eGarantie Antlia de 3 ans contre le délaminage\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Antlia","offers":[{"title":"H-alpha \/ 2\"","offer_id":44108918751461,"sku":"AF-HA-ULTRA25-2","price":837.0,"currency_code":"CAD","in_stock":true},{"title":"H-alpha \/ 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36mm","offer_id":46326660169957,"sku":"AF-SHO-ULTRA25-36","price":1980.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/antlia-2-5nm-sho-ultra-narrowband-filters-2-mounted-astronomy-plus.webp?v=1690491120","url":"https:\/\/istronomyplus.com\/fr\/products\/antlia-2-5nm-sho-ultra-filter-2-mounted","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}