{"id":13784,"date":"2026-03-04T17:01:07","date_gmt":"2026-03-04T16:01:07","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=13784"},"modified":"2026-03-04T17:01:20","modified_gmt":"2026-03-04T16:01:20","slug":"baader-hyperion-21-mm-31-75mm","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/baader-hyperion-21-mm-31-75mm\/","title":{"rendered":"Baader Hyperion 21 mm 31.75mm"},"content":{"rendered":"

21 mm wide-field eyepiece for maximum comfort and contrast<\/h2>\n

This 21 mm fixed focal-length eyepiece<\/strong> offers excellent viewing comfort thanks to its 68\u00b0 apparent field of view<\/strong>. Its optical design allows immersive observation while maintaining a sharp, high-contrast image, even at high magnification.<\/p>\n

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Wide field and comfortable vision<\/h3>\n
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  • Fixed focal length : 21 mm<\/strong><\/li>\n
  • Apparent field : 68\u00b0<\/strong><\/li>\n
  • Comfortable viewing even at high magnification<\/li>\n
  • Immersive image ideal for deep sky and extended objects<\/li>\n<\/ul>\n
    \n

    High-quality optical coating<\/h3>\n

    Optical surfaces benefit from Zeiss-class Phantom Group cladding<\/strong>, The new, ultra-high-efficiency, high-reflectance, high-transmittance, high-efficiency glass is renowned for its ability to effectively reduce internal reflections and maximize light transmission.<\/p>\n

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    • Virtually eliminates stray reflections<\/li>\n
    • Maximum image contrast<\/li>\n
    • High light transmission<\/li>\n
    • Better visibility of fine details<\/li>\n<\/ul>\n
      \n

      Double compatibility 1.25\u2033 and 2\u2033<\/h3>\n

      The eyepiece is supplied with 1.25\u2033 and 2\u2033 insert skirts<\/strong>, This allows flexible use with the majority of eyepiece holders and angled eyepieces on the market.<\/p>\n

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      • Universal compatibility<\/li>\n
      • Easy adaptation to different optical configurations<\/li>\n
      • Visual or imaging use<\/li>\n<\/ul>\n
        \n

        Camera and accessory connections<\/h3>\n

        Several integrated threads<\/strong> allow easy adaptation of photographic accessories and the use of different imaging techniques.<\/p>\n

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        • Direct camera adapter<\/li>\n
        • Compatibility with afocal accessories<\/li>\n
        • Classic eyepiece projection possible<\/li>\n
        • Versatile use for observation and photography<\/li>\n<\/ul>\n
          \n

          Key features<\/h3>\n\n\n\n\n\n\n\n\n
          Type<\/strong><\/td>\nWide-field eyepiece<\/td>\n<\/tr>\n
          Focal length<\/strong><\/td>\n21 mm<\/td>\n<\/tr>\n
          Apparent field<\/strong><\/td>\n68\u00b0<\/td>\n<\/tr>\n
          Optical treatment<\/strong><\/td>\nPhantom Group-Coating (Zeiss class)<\/td>\n<\/tr>\n
          Insertion diameter<\/strong><\/td>\n1.25\u2033 and 2\u2033<\/td>\n<\/tr>\n
          Photography<\/strong><\/td>\nCamera, afocal and eyepiece projection adaptation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          A versatile eyepiece for observation and imaging<\/h3>\n

          With its 21 mm<\/strong>his 68\u00b0 field of view<\/strong> and high-end optical coatings, this eyepiece is an excellent choice for astronomers seeking a bright, high-contrast, comfortable image for both visual observation and certain photographic applications.<\/p>","protected":false},"excerpt":{"rendered":"

          Oculaire grand champ 21 mm \u2013 confort et contraste maximal Cet oculaire \u00e0 focale fixe de 21 mm offre un excellent confort d\u2019observation gr\u00e2ce \u00e0 son champ apparent de 68\u00b0. Sa conception optique permet une observation immersive tout en conservant une image nette et contrast\u00e9e, m\u00eame lorsque le grossissement devient important. Champ large et vision […]<\/p>\n","protected":false},"featured_media":13785,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[624],"product_cat":[695],"product_tag":[],"class_list":{"0":"post-13784","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-baader","7":"product_cat-oculaires-et-smart-oculaires","9":"first","10":"instock","11":"sale","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/13784","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=13784"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/13785"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=13784"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=13784"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=13784"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=13784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}