{"id":7108,"date":"2025-04-26T13:22:23","date_gmt":"2025-04-26T11:22:23","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=7108"},"modified":"2026-03-29T17:53:20","modified_gmt":"2026-03-29T15:53:20","slug":"filtre-oiii-antlia-ultra-2-5nm-highspeed-copie","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-oiii-antlia-ultra-2-5nm-highspeed-copie\/","title":{"rendered":"Antlia 4.5nm Edge H-alpha filter"},"content":{"rendered":"

H-alpha Antlia 4.5nm Edge<\/h1>\n

Capture the finest details of H-alpha nebulae with the Antlia H-alpha 4.5nm EDGE filter.<\/strong> Specially designed for astrophotography, it offers exceptional transmission and optimum noise reduction to reveal the faintest structures in the deep sky.<\/p>\n

\"\"<\/div>\n

Why choose the Antlia H-alpha 4.5nm EDGE filter?<\/h2>\n
    \n
  • High transmission<\/strong> (>90% at 656.3nm) to capture maximum light signal.<\/li>\n
  • Optimized bandwidth<\/strong> at 4.5nm for maximum contrast between nebula and sky background.<\/li>\n
  • OD5 deletion<\/strong> unwanted wavelengths to limit light interference.<\/li>\n
  • Compatibility<\/strong> up to f\/3 without significant signal loss.<\/li>\n
  • Robust design<\/strong> with optical monoblock substrate, blackened edges and scratch-resistant coating.<\/li>\n<\/ul>\n

    Ideal applications<\/h2>\n
      \n
    • Imaging H-alpha nebulae<\/li>\n
    • Observation of planetary nebulae and Wolf-Rayet<\/li>\n
    • Photograph of supernova remnants<\/li>\n
    • Imaging in light-polluted areas or dark sites<\/li>\n
    • Extended photo sessions even under moonlight<\/li>\n<\/ul>\n

      Filter technical specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Features<\/th>\nDetail<\/th>\n<\/tr>\n<\/thead>\n
      Type<\/td>\nH-alpha 4.5nm EDGE<\/td>\n<\/tr>\n
      FWHM (Full Width at Half Maximum)<\/td>\n4.5nm<\/td>\n<\/tr>\n
      Center wavelength (CWL)<\/td>\n656.3nm<\/td>\n<\/tr>\n
      Maximum transmission<\/td>\n>90%<\/td>\n<\/tr>\n
      Out-of-band blocking<\/td>\nOD5 (0.001%) between 300-1000nm<\/td>\n<\/tr>\n
      Filter thickness<\/td>\n2mm \u00b1 0.05mm (50mm : 3mm)<\/td>\n<\/tr>\n
      Substrate<\/td>\nUnglued monoblock optical glass<\/td>\n<\/tr>\n
      Surface quality<\/td>\nS\/D 60\/40 (MIL-O-13830)<\/td>\n<\/tr>\n
      Transmitted wavefront<\/td>\n\u03bb\/4 or better<\/td>\n<\/tr>\n
      Parallelism<\/td>\n<30 arcsec<\/td>\n<\/tr>\n
      Warranty<\/td>\n3 years against delamination<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Size options available<\/h2>\n
        \n
      • Mounted: 1.25\u2033, 2\u2033<\/li>\n
      • Unmounted: \u00d831mm, \u00d836mm, \u00d850mm<\/li>\n<\/ul>\n

        Frame features<\/h2>\n
          \n
        • Ultra-thin cell to reduce vignetting<\/li>\n
        • Black anodized finish for durability<\/li>\n
        • Weather-resistant laser engraving<\/li>\n<\/ul>\n

          Spectral curves<\/h2>\n
          \"\"<\/div>\n

          Important notice<\/h2>\n

          Never look directly at the sun with this filter.<\/strong> This could result in serious eye damage.<\/p>","protected":false},"excerpt":{"rendered":"

          H-alpha Antlia 4.5nm Edge Capturez les d\u00e9tails les plus subtils des n\u00e9buleuses H-alpha gr\u00e2ce au filtre Antlia H-alpha 4.5nm EDGE. Sp\u00e9cialement con\u00e7u pour l’astrophotographie, il offre une transmission exceptionnelle et une r\u00e9duction optimale du bruit pour r\u00e9v\u00e9ler les structures les plus faibles du ciel profond. Pourquoi choisir le filtre Antlia H-alpha 4.5nm EDGE\u00a0? Transmission \u00e9lev\u00e9e […]<\/p>\n","protected":false},"featured_media":7116,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[791],"product_cat":[780,801,833],"product_tag":[],"class_list":["post-7108","product","type-product","status-publish","has-post-thumbnail","product_brand-antlia","product_cat-filtres-bande-etroite","product_cat-filtre-astrophotographie-du-ciel-profond","product_cat-en-stock","first","instock","taxable","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/7108","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=7108"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7116"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=7108"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=7108"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=7108"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=7108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}