{"id":3805,"date":"2025-03-06T20:31:55","date_gmt":"2025-03-06T19:31:55","guid":{"rendered":"https:\/\/deep-space-astronomy.geekworkers.dev\/produit\/colour-magic-2-h-alpha-3nm\/"},"modified":"2025-06-03T10:40:42","modified_gmt":"2025-06-03T08:40:42","slug":"colour-magic-2-h-alpha-3nm","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/colour-magic-2-h-alpha-3nm\/","title":{"rendered":"Colour Magic 2\u2033 H-alpha 3nm"},"content":{"rendered":"<h2>Askar Colour Magic 2\" H-alpha 3nm filter<\/h2>\n<p>Visit <strong>Askar Colour Magic 2\" H-alpha 3nm filter<\/strong> is a narrow-band filter designed for astrophotography of nebulae and other objects rich in ionized hydrogen. Its main features are as follows:<\/p>\n<h3>Technical specifications<\/h3>\n<ul>\n<li><strong>Bandwidth :<\/strong> 3 nm centered on 656.3 nm (H-alpha line)<\/li>\n<li><strong>Format:<\/strong> 2\" (50.8 mm)<\/li>\n<li><strong>Maximum transmission :<\/strong> Approx. 90% at 656.3 nm<\/li>\n<li><strong>Effective blocking :<\/strong> Light pollution and unwanted wavelengths<\/li>\n<li><strong>Optical density outside the transmission zone :<\/strong> OD3 (0.1%)<\/li>\n<\/ul>\n<h3>Benefits<\/h3>\n<ul>\n<li><strong>Contrast enhancement :<\/strong> Greatly enhances the contrast of emission nebulae.<\/li>\n<li><strong>Imaging in difficult conditions:<\/strong> Allows imaging even in conditions of high light pollution.<\/li>\n<li><strong>Reduced star intensity:<\/strong> Reduces the intensity of surrounding stars for better contrast.<\/li>\n<li><strong>Compatibility with other filters :<\/strong> Can be used in combination with SII and OIII filters to create Hubble palette images (SHO).<\/li>\n<\/ul>\n<h3>Astrophotography applications<\/h3>\n<p>The filter <strong>Askar Colour Magic H-alpha 3nm<\/strong> is particularly suitable for :<\/p>\n<ul>\n<li><strong>Imaging diffuse nebulae :<\/strong> Capture the details of H-alpha-rich nebulae.<\/li>\n<li><strong>Photographing planetary nebulae :<\/strong> Ideal for photographing planetary nebulae.<\/li>\n<li><strong>Capturing supernova slag :<\/strong> Perfect for photographing H-alpha supernova remnants.<\/li>\n<\/ul>\n<h3>Additional considerations<\/h3>\n<p>It's important to note that this filter requires longer exposure times due to its narrow bandwidth. However, it offers an excellent signal-to-noise ratio for H-alpha emitting objects, even under difficult viewing conditions.<\/p>\n<h3>Conclusion<\/h3>\n<p>Visit <strong>Askar Colour Magic 2\" H-alpha 3nm filter<\/strong> is an essential tool for astrophotographers specializing in imaging nebulae and other celestial objects rich in ionized hydrogen. Its ability to enhance contrast and reduce light pollution makes it a first-rate choice for advanced deep-sky observations and imaging.<\/p>","protected":false},"excerpt":{"rendered":"<p>Filtre Askar Colour Magic 2\u201d H-alpha 3nm Le filtre Askar Colour Magic 2\u201d H-alpha 3nm est un filtre \u00e0 bande \u00e9troite con\u00e7u pour l\u2019astrophotographie des n\u00e9buleuses et autres objets riches en hydrog\u00e8ne ionis\u00e9. Voici ses principales caract\u00e9ristiques : Sp\u00e9cifications techniques Bande passante : 3 nm centr\u00e9e sur 656,3 nm (raie H-alpha) Format : 2\u201d (50,8 [&hellip;]<\/p>\n","protected":false},"featured_media":6752,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[382],"product_cat":[780],"product_tag":[],"class_list":["post-3805","product","type-product","status-publish","has-post-thumbnail","product_brand-askar","product_cat-filtres-bande-etroite","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/3805","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=3805"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/6752"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=3805"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=3805"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=3805"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=3805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}