{"id":7226,"date":"2025-04-26T16:14:54","date_gmt":"2025-04-26T14:14:54","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=7226"},"modified":"2025-09-17T15:41:25","modified_gmt":"2025-09-17T13:41:25","slug":"filtre-planetaire-antlia-methane-ch4","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-planetaire-antlia-methane-ch4\/","title":{"rendered":"Antlia planetary filter Methane (CH4)"},"content":{"rendered":"<h3 style=\"text-align: center;\">Antlia CH\u2084 filter (Methane)<\/h3>\n<p>The Antlia CH\u2084 (Methane) filter is a specialized filter designed for near-infrared planetary imaging, centered at 889nm. It reveals fine details in the atmospheres of planets such as Jupiter, Saturn, Mars and other methane-rich celestial bodies. It is intended exclusively for photographic use, not for visual observation.<\/p>\n<h3>Key features<\/h3>\n<ul>\n<li>Transmission centered on 889nm with 20nm bandwidth<\/li>\n<li>Average transmission over 80% in the center<\/li>\n<li>OD4 suppression of stray wavelengths from 200nm to 1050nm<\/li>\n<li>Schott optical substrate, one-piece, unglued<\/li>\n<li>Double-sided optical polishing for a \u03bb\/4 surface finish<\/li>\n<li>Surface quality: 60\/40 (MIL-O-13830 standard)<\/li>\n<li>Parallelism less than 30 arcsec<\/li>\n<li>Multilayer anti-reflective coating on both sides<\/li>\n<\/ul>\n<h3>Ideal applications<\/h3>\n<ul>\n<li>Planetary imaging of Jupiter to highlight methane bands<\/li>\n<li>Photographic observation of the Martian polar caps<\/li>\n<li>Study of the atmosphere of Saturn and other gaseous planets<\/li>\n<\/ul>\n<h3>Available formats<\/h3>\n<ul>\n<li>Mounted 1.25\u2033 (M28.5\u00d70.6)<\/li>\n<\/ul>\n<h3>Filter design<\/h3>\n<ul>\n<li>Ultra-fine cell to minimize vignetting<\/li>\n<li>Durable black anodized finish<\/li>\n<li>Permanent laser engraving (non-fading)<\/li>\n<\/ul>\n<h3>Important warnings<\/h3>\n<ul>\n<li>The CH\u2084 filter is not designed for visual observation.<\/li>\n<li><strong style=\"color: red;\">DO NOT use for solar imaging without an energy-rejection filter.<\/strong><\/li>\n<li>Risk of damage to telescope, filter and sensor if used without appropriate protection from the sun.<\/li>\n<\/ul>\n<h3>Notes on use<\/h3>\n<ul>\n<li>Recommended for use with long exposures and large aperture diameters<\/li>\n<li>Requires a sensitive near-infrared camera<\/li>\n<li>Not visible to the human eye (above 700nm)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Filtre Antlia CH\u2084 (M\u00e9thane) Le filtre Antlia CH\u2084 (M\u00e9thane) est un filtre sp\u00e9cialis\u00e9 con\u00e7u pour l&rsquo;imagerie plan\u00e9taire en infrarouge proche, centr\u00e9 sur 889nm. Il permet de r\u00e9v\u00e9ler des d\u00e9tails fins dans les atmosph\u00e8res des plan\u00e8tes comme Jupiter, Saturne, Mars et d&rsquo;autres corps c\u00e9lestes riches en m\u00e9thane. Il est destin\u00e9 exclusivement \u00e0 l&rsquo;usage photographique et non [&hellip;]<\/p>\n","protected":false},"featured_media":7227,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[791],"product_cat":[780,804],"product_tag":[],"class_list":{"0":"post-7226","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-antlia","7":"product_cat-filtres-bande-etroite","8":"product_cat-filtres-planetaires","10":"first","11":"on_supplier","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/7226","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=7226"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7227"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=7226"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=7226"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=7226"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=7226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}