{"id":7266,"date":"2025-04-26T17:02:18","date_gmt":"2025-04-26T15:02:18","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=7266"},"modified":"2025-11-18T18:02:17","modified_gmt":"2025-11-18T17:02:17","slug":"filtre-antlia-solar-discover-dualband-ha-cak-et-cah","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-antlia-solar-discover-dualband-ha-cak-et-cah\/","title":{"rendered":"Antlia Solar Discover Dualband Ha, CaK and CaH filters"},"content":{"rendered":"<h3 style=\"text-align: center;\">Antlia Solar Discover Dualband Ha, CaK and CaH Filter Assembly<\/h3>\n<p>The Antlia Solar Discover Dualband filter (Ha, CaK and CaH) is specially designed for solar imaging of the photosphere. It enhances contrast and sharpness, making it possible to better reveal solar surface details such as sunspots and solar faculae. The system incorporates an Energy Rejection Filter (ERF) that blocks UV and IR, while allowing only Ha (656.3nm), CaK (393.3nm) and CaH (396.8nm) wavelengths to pass through.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-7277 aligncenter\" style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';\" src=\"https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61.jpg\" alt=\"\" width=\"1000\" height=\"1000\" srcset=\"https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61.jpg 1000w, https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61-300x300.jpg 300w, https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61-150x150.jpg 150w, https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61-768x768.jpg 768w, https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61-12x12.jpg 12w, https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61-600x600.jpg 600w, https:\/\/deep-space-astronomy.ch\/wp-content\/uploads\/2025\/04\/Sample-Photo-61-100x100.jpg 100w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<h3>Key features<\/h3>\n<ul>\n<li>Selective filtration of H\u03b1, CaK and CaH bands<\/li>\n<li>Closed tubular structure in CNC aeronautical aluminum, strong and durable<\/li>\n<li>Light-tight assembly, with no parasitic light leaks<\/li>\n<li>Integrated ND filter for sunlight reduction<\/li>\n<li>Superior resolution and contrast compared with conventional solar films<\/li>\n<li>Ease of use and extended system life<\/li>\n<li>Available in Standard (1.25\u2033 + 2\u2033) and Mini (1.25\u2033) versions<\/li>\n<\/ul>\n<h3>Compatibility<\/h3>\n<ul>\n<li>Adapters included: 1.25\u2033 and 2\u2033 for the Standard version; 1.25\u2033 for the Mini version<\/li>\n<li>Fast connection to telescopes and astrophotography cameras<\/li>\n<li>Compatible with refractors up to 100mm aperture without additional reduction<\/li>\n<\/ul>\n<h3>Important notes<\/h3>\n<ul>\n<li>If used with a zenithal mirror, the ERF must be positioned correctly.<\/li>\n<li>For telescopes over 100mm in diameter, use of an additional light reduction filter (ERF, solar film, diaphragm) is mandatory.<\/li>\n<li>Without additional reduction, use reserved for \u2264100mm refractors.<\/li>\n<\/ul>\n<h3>About visual observation<\/h3>\n<p>The Solar Discover Dualband Ha, CaK and CaH is not recommended for visual observation. IR coverage differs slightly from the ISO 12312-2 standard for sunglasses. For any attempt at visual observation, it is imperative to check that all filters are intact and in perfect working order.<\/p>\n<h3>Compliance with transmission standards<\/h3>\n<ul>\n<li>Tmax% (380-780nm): 0.0032%<\/li>\n<li>Tmin% (380-780nm): 0.000061%<\/li>\n<li>Tmax% UVB (280-315nm): 0.0032%<\/li>\n<li>Tmax% UVA (315-380nm): 0.0032%<\/li>\n<li>Tmax% IR (780-1700nm): 3%<\/li>\n<\/ul>\n<h3>Version (make sure you order the right one)<\/h3>\n<ul>\n<li>Standard version<\/li>\n<li>Mini version<\/li>\n<\/ul>\n<h3>Warranty<\/h3>\n<ul>\n<li>3-year manufacturer's warranty<\/li>\n<li><strong>Any disassembly of the assembly voids the warranty.<\/strong><\/li>\n<li>No returns, exchanges or repairs accepted after disassembly<\/li>\n<\/ul>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Antlia Solar Discover Dualband Ha, CaK et CaH Filter Assembly Le filtre Antlia Solar Discover Dualband (Ha, CaK et CaH) est sp\u00e9cialement con\u00e7u pour l&rsquo;imagerie solaire de la photosph\u00e8re. Il am\u00e9liore le contraste et la nettet\u00e9, permettant de mieux r\u00e9v\u00e9ler les d\u00e9tails de surface du Soleil tels que les taches solaires et les facules solaires. [&hellip;]<\/p>\n","protected":false},"featured_media":7281,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[791],"product_cat":[642,647,645],"product_tag":[],"class_list":{"0":"post-7266","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-antlia","7":"product_cat-materiel-pour-lobservation-solaire","8":"product_cat-filtres-bloquants-ha-ou-ca-k","9":"product_cat-filtres-solaires","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-variable"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/7266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=7266"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7281"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=7266"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=7266"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=7266"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=7266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}