{"id":7120,"date":"2025-04-26T13:30:01","date_gmt":"2025-04-26T11:30:01","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=7120"},"modified":"2026-03-29T17:52:52","modified_gmt":"2026-03-29T15:52:52","slug":"filtre-oiii-antlia-4-5nm-edge","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/filtre-oiii-antlia-4-5nm-edge\/","title":{"rendered":"Antlia 4.5nm Edge OIII filter"},"content":{"rendered":"

Antlia OIII 4.5nm EDGE filter<\/strong><\/h3>\n

Explore OIII nebulae with unrivalled contrast thanks to the Antlia OIII 4.5nm EDGE filter.<\/strong> Specially designed for deep-sky astrophotography, it maximizes the useful signal while suppressing unwanted noise.<\/p>\n

\"\"<\/div>\n

Why choose the Antlia OIII 4.5nm EDGE filter?<\/h2>\n
    \n
  • High transmission<\/strong> (>85% at 500.7nm) to capture the faintest structures of OIII nebulae.<\/li>\n
  • Narrow bandwidth<\/strong> of 4.5nm for exceptional contrast between subject and sky background.<\/li>\n
  • OD5 deletion<\/strong> unwanted wavelengths to minimize light interference.<\/li>\n
  • Fast compatibility<\/strong> up to f\/3 without significant signal loss.<\/li>\n
  • Premium manufacturing<\/strong> with one-piece optical substrate, scratch-resistant surface treatment and blackened edges.<\/li>\n<\/ul>\n

    Ideal applications<\/h2>\n
      \n
    • Imaging OIII nebulae<\/li>\n
    • Observation of planetary nebulae and Wolf-Rayet<\/li>\n
    • Capturing supernova remnants<\/li>\n
    • Imaging polluted skies or dark sites<\/li>\n
    • Extended imaging time 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>\nOIII 4.5nm EDGE<\/td>\n<\/tr>\n
      FWHM (Full Width at Half Maximum)<\/td>\n4.5nm<\/td>\n<\/tr>\n
      Center wavelength (CWL)<\/td>\n500.7nm<\/td>\n<\/tr>\n
      Maximum transmission<\/td>\n>85%<\/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 \u00b1 0.05mm)<\/td>\n<\/tr>\n
      Substrate<\/td>\nUnglued monoblock optical glass<\/td>\n<\/tr>\n
      Surface quality<\/td>\nS\/D 60\/40 (MIL-O-13830 standard)<\/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

      Available sizes<\/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 for reduced 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 would cause serious eye damage.<\/p>\n

           <\/p>","protected":false},"excerpt":{"rendered":"

          Filtre Antlia OIII 4.5nm EDGE Explorez les n\u00e9buleuses OIII avec un contraste in\u00e9gal\u00e9 gr\u00e2ce au filtre Antlia OIII 4.5nm EDGE. Sp\u00e9cialement con\u00e7u pour l’astrophotographie du ciel profond, il maximise le signal utile tout en supprimant les bruits ind\u00e9sirables. Pourquoi choisir le filtre Antlia OIII 4.5nm EDGE\u00a0? Haute transmission (>85% \u00e0 500.7nm) pour capter les structures […]<\/p>\n","protected":false},"featured_media":7134,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[791],"product_cat":[780,801,833],"product_tag":[],"class_list":{"0":"post-7120","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-filtre-astrophotographie-du-ciel-profond","9":"product_cat-en-stock","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-variable"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/7120","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=7120"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7134"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=7120"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=7120"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=7120"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=7120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}