{"id":7238,"date":"2025-04-26T16:37:38","date_gmt":"2025-04-26T14:37:38","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=7238"},"modified":"2025-09-17T15:41:25","modified_gmt":"2025-09-17T13:41:25","slug":"prisme-de-herschel-antlia-cak-3nm","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/prisme-de-herschel-antlia-cak-3nm\/","title":{"rendered":"Herschel Antlia CaK 3nm prism"},"content":{"rendered":"<h3 style=\"text-align: center;\">Antlia Solar Herschel Wedge<\/h3>\n<p>The Antlia Solar Herschel Wedge is a 35mm solar prism replacing the standard diagonal mirror at the back of refracting telescopes. Designed for high-resolution imaging of the Sun, it offers sharper, higher-contrast images of solar granulation, sunspots and other fine details. The system incorporates an ultra-narrow 3nm CaK filter centered at 393.3nm, perfect for capturing visible structures in the Calcium II K band.<\/p>\n<h3>Key features<\/h3>\n<ul>\n<li>35mm prism designed on the Herschel Wedge principle<\/li>\n<li>Integrated CaK 3nm filter, centered at 393.3nm<\/li>\n<li>CNC construction in aeronautical aluminum<\/li>\n<li>Secure, reduced transmission of sunlight<\/li>\n<li>Brightness control via adjustable ring with integrated diaphragm<\/li>\n<li>Thick polycrystalline ceramic diffuser for heat dissipation<\/li>\n<li>Efficient ventilation above the ceramic plate for cooling<\/li>\n<li>Multi-coated anti-reflective optics to reduce internal reflections<\/li>\n<li>Integration of a solar finder for safe alignment<\/li>\n<\/ul>\n<h3>Built-in CaK 3nm filter specifications<\/h3>\n<ul>\n<li>Ultra-narrow 3nm bandwidth<\/li>\n<li>Center wavelength: 393.3nm (Calcium K-Line)<\/li>\n<li>High blocking :\n<ul>\n<li>OD5 (0.001%) between 200nm and 1200nm<\/li>\n<li>OD3 (0.1%) between 1200nm and 1500nm<\/li>\n<\/ul>\n<\/li>\n<li>Polished, heat-resistant double-sided substrate<\/li>\n<li>Designed to maximize the contrast of sunspots, granulation and other fine details<\/li>\n<\/ul>\n<h3>Ideal applications<\/h3>\n<ul>\n<li>Imaging solar granulation<\/li>\n<li>High-resolution sunspot capture<\/li>\n<li>Calcium II K-band solar surface imaging<\/li>\n<\/ul>\n<h3>Recommendations for use<\/h3>\n<ul>\n<li>For use exclusively with refracting telescopes<\/li>\n<li>Maximum recommended aperture: 120mm<\/li>\n<li>Recommended focal length: F\/5.5 ratio or better<\/li>\n<li>Photographic use only, not suitable for visual observation<\/li>\n<li>Never use without the CaK filter supplied<\/li>\n<\/ul>\n<h3>Safety precautions<\/h3>\n<ul>\n<li><strong style=\"color: red;\">DO NOT use for direct visual observation.<\/strong><\/li>\n<li><strong style=\"color: red;\">DO NOT use without filter to avoid irreversible damage to eyes and equipment.<\/strong><\/li>\n<li>Device designed for secure solar imaging only.<\/li>\n<\/ul>\n<h3>Warranty and support<\/h3>\n<ul>\n<li>1-year manufacturer's warranty<\/li>\n<li>The warranty is void if the prism is disassembled.<\/li>\n<li>No returns, exchanges or repairs accepted after opening<\/li>\n<\/ul>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Antlia Solar Herschel Wedge Le Antlia Solar Herschel Wedge est un prisme solaire de 35mm rempla\u00e7ant le miroir diagonal standard \u00e0 l&rsquo;arri\u00e8re des t\u00e9lescopes r\u00e9fracteurs. Con\u00e7u pour l&rsquo;imagerie haute r\u00e9solution du Soleil, il offre des images plus nettes et contrast\u00e9es de la granulation solaire, des taches solaires et d&rsquo;autres d\u00e9tails fins. Ce syst\u00e8me incorpore un [&hellip;]<\/p>\n","protected":false},"featured_media":7242,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[791],"product_cat":[642,646],"product_tag":[],"class_list":["post-7238","product","type-product","status-publish","has-post-thumbnail","product_brand-antlia","product_cat-materiel-pour-lobservation-solaire","product_cat-prismes-de-herschel","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/7238","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=7238"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7242"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=7238"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=7238"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=7238"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=7238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}