{"id":3886,"date":"2025-03-06T20:41:53","date_gmt":"2025-03-06T19:41:53","guid":{"rendered":"https:\/\/deep-space-astronomy.geekworkers.dev\/produit\/filtre-chroma-h-beta-5nm\/"},"modified":"2025-06-03T10:40:56","modified_gmt":"2025-06-03T08:40:56","slug":"filtre-chroma-h-beta-5nm","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-chroma-h-beta-5nm\/","title":{"rendered":"Chroma H-beta filter 5nm - 2\u2033 Mounted"},"content":{"rendered":"<h3>H-beta 5nm filter from Chroma Technology<\/h3>\n<p>Visit <strong>5nm H-beta filter from Chroma Technology<\/strong> is a narrow-band filter designed for astronomical imaging, specifically optimized to capture the H-beta line at 486.1 nm. This filter is particularly suited to astrophotographers wishing to obtain detailed images of nebulae and other objects rich in ionized hydrogen.<\/p>\n<h4>Key features<\/h4>\n<ul>\n<li><strong>Bandwidth :<\/strong> 5 nm, enabling precise isolation of the H-beta line while effectively blocking unwanted wavelengths.<\/li>\n<li><strong>High transmission :<\/strong> Up to 95% at 486.1 nm, guaranteeing an excellent signal-to-noise ratio.<\/li>\n<li><strong>Optical quality :<\/strong>\n<ul>\n<li>Surface polished to an accuracy of \u03bb\/4.<\/li>\n<li>Multi-layer anti-reflective coatings to minimize halos and stray reflections.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Available formats :<\/strong>\n<ul>\n<li>Assembled: 1.25\" and 2\".<\/li>\n<li>Unmounted: Custom formats available.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Substrate thickness :<\/strong> Approx. 3 mm, ensuring exceptional durability.<\/li>\n<\/ul>\n<h4>Applications<\/h4>\n<ul>\n<li><strong>Imaging specific nebulae :<\/strong>\n<ul>\n<li>Ideal for capturing objects such as the Horsehead Nebula, the California Nebula, or other structures rich in H-beta emission.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Reducing light pollution :<\/strong>\n<ul>\n<li>Effectively blocks artificial light sources and sky background light.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Advanced astrophotography :<\/strong>\n<ul>\n<li>Complement H-alpha and OIII filters to create false color or scientific palette images.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Compatibility with high-speed systems :<\/strong>\n<ul>\n<li>Optimized for focal ratios up to f\/4.0. A special version may be required for faster systems.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>Technical highlights<\/h4>\n<ul>\n<li><strong>Exceptional durability :<\/strong>\n<ul>\n<li>Sputter coatings guarantee long-term spectral stability.<\/li>\n<li>Resistant to temperature and humidity variations.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Anti-halos design :<\/strong> Anti-reflective coatings eliminate halos around bright stars.<\/li>\n<li><strong>Universal compatibility :<\/strong> Fits most filter wheels and drawers on the market.<\/li>\n<\/ul>\n<h4>Conclusion<\/h4>\n<p>The filter <strong>Chroma H-beta 5nm<\/strong> is an invaluable tool for astrophotographers seeking to capture the subtle details of nebulae rich in ionized hydrogen. Its optical precision, high transmission and ability to effectively reduce light pollution make it a quality choice for deep-sky imaging.<\/p>","protected":false},"excerpt":{"rendered":"<p>Filtre H-beta 5nm de Chroma Technology Le filtre H-beta 5nm de Chroma Technology est un filtre \u00e0 bande \u00e9troite con\u00e7u pour l\u2019imagerie astronomique, sp\u00e9cifiquement optimis\u00e9 pour capturer la raie H-beta \u00e0 486,1 nm. Ce filtre est particuli\u00e8rement adapt\u00e9 aux astrophotographes souhaitant obtenir des images d\u00e9taill\u00e9es des n\u00e9buleuses et autres objets riches en hydrog\u00e8ne ionis\u00e9. Caract\u00e9ristiques [&hellip;]<\/p>\n","protected":false},"featured_media":3885,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[582],"product_cat":[780],"product_tag":[],"class_list":{"0":"post-3886","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-chroma","7":"product_cat-filtres-bande-etroite","9":"first","10":"on_supplier","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/3886","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=3886"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/3885"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=3886"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=3886"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=3886"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=3886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}