{"id":14969,"date":"2026-05-08T16:52:52","date_gmt":"2026-05-08T14:52:52","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=14969"},"modified":"2026-05-08T17:15:48","modified_gmt":"2026-05-08T15:15:48","slug":"askar-111f","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/askar-111f\/","title":{"rendered":"Askar 111F"},"content":{"rendered":"

Askar 111F Flat-Field - APO Quadruplet Full Frame High Performance scope for Astrophotography<\/h2>\n

L'Askar 111F Flat-Field<\/strong> is a premium apochromatic refractor designed for astrophotographers looking for excellent image quality, native Full Frame compatibility and ease of use. With its 111 mm<\/strong>, its focal length of 766 mm<\/strong> and its focal ratio of f\/6.9<\/strong>, It is an extremely versatile platform for deep-sky imaging.<\/p>\n

Thanks to its design self-correcting APO quadruplet<\/strong>, With its ED glass element and integrated field corrector, Askar 111F delivers fine, homogeneous stars across the entire field without the need for additional flatteners or complex backfocus calculations.<\/p>\n

A Full Frame astrographic telescope ready to image<\/h3>\n

Askar 111F has been developed to simplify the user experience as much as possible. Unlike many glasses that require several complementary optical accessories, this version directly integrates its own field correction system.<\/p>\n

The image circle of 44 mm<\/strong> allows optimum use with full-format sensors, while maintaining excellent star quality right down to the corners.<\/p>\n

Simply connect your camera via the supplied adapters, focus and start acquiring immediately.<\/p>\n

This approach reduces :<\/p>\n

    \n
  • Hidden costs<\/li>\n
  • Mechanical complexity<\/li>\n
  • The risk of backfocus errors<\/li>\n
  • The overall weight of the setup<\/li>\n<\/ul>\n

    APO quadruplet optics with ED glass<\/h3>\n

    The Askar 111F optical system is based on a four-lens formula comprising :<\/p>\n

      \n
    • Three front elements<\/li>\n
    • A rear corrective lens<\/li>\n
    • An ED element<\/li>\n<\/ul>\n

      This design effectively reduces chromatic aberrations while maintaining excellent contrast and sharpness.<\/p>\n

      The tube also incorporates optimized internal diaphragms to limit stray reflections and further improve image quality.<\/p>\n

      With its 766 mm focal length, Askar 111F is particularly suitable for :<\/p>\n

        \n
      • Detailed nebulae<\/li>\n
      • Intermediate galaxies<\/li>\n
      • Globular clusters<\/li>\n
      • Large deep-sky objects<\/li>\n
      • High-resolution wide-field imaging<\/li>\n<\/ul>\n

        Advanced astrophotography compatibility<\/h3>\n

        The Askar 111F is supplied with several photo adapters to ensure excellent compatibility with modern equipment:<\/p>\n

          \n
        • M48x0.75<\/li>\n
        • M54x0.75<\/li>\n
        • Integrated 2-inch filter thread<\/li>\n<\/ul>\n

          This compatibility makes it easy to integrate with :<\/p>\n

            \n
          • Astronomical CMOS cameras<\/li>\n
          • DSLR<\/li>\n
          • Hybrid cameras<\/li>\n
          • Filter wheels<\/li>\n
          • Correctors and standard accessories<\/li>\n<\/ul>\n

            High-rigidity 3-inch Rack & Pinion eyepiece holder<\/h3>\n

            Askar 111F is equipped with a sturdy eyepiece holder 3-inch Rack & Pinion<\/strong> designed to support heavy light trains without mechanical bending.<\/p>\n

            This focuser includes :<\/p>\n

              \n
            • Fine 1:10 gear ratio<\/li>\n
            • Excellent mechanical stability<\/li>\n
            • 360\u00b0 graduated rotation<\/li>\n
            • Compatible with electronic focus motors<\/li>\n<\/ul>\n

              The fine focus ensures optimum precision for astrophotography, while the rotator facilitates precise framing of celestial objects.<\/p>\n

              Premium mechanical construction and transportability<\/h3>\n

              Despite its comfortable 111 mm opening, Askar 111F remains relatively compact and easy to transport thanks to its retractable mist shield.<\/p>\n

              The tube benefits from high-quality CNC manufacturing, with the characteristic blue and white finish of Askar's F series.<\/p>\n

              The tube also includes :<\/p>\n

                \n
              • Sturdy handle with finder support<\/li>\n
              • Two additional accessory bases<\/li>\n
              • 300 mm Vixen dovetail<\/li>\n
              • 1\/4\u201d and 3\/8\u201d tripod threads<\/li>\n<\/ul>\n

                This design makes it easy to assemble :<\/p>\n

                  \n
                • A researcher<\/li>\n
                • A guide<\/li>\n
                • An ASIAIR<\/li>\n
                • Complementary accessories<\/li>\n<\/ul>\n

                  Versatility for astrophotography and everyday use<\/h3>\n

                  Askar 111F isn't just for astronomy. Its optical quality and versatile focal length mean it can also be used for :<\/p>\n

                    \n
                  • Terrestrial photography<\/li>\n
                  • Landscapes<\/li>\n
                  • Nature photography<\/li>\n
                  • Visual observation<\/li>\n<\/ul>\n

                    Its excellent level of optical correction makes it particularly pleasant to use in many situations.<\/p>\n

                    Summary table of technical specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                    Features<\/th>\nValue<\/th>\n<\/tr>\n
                    Optical type<\/td>\nQuadruplet APO air-spaced with ED glass<\/td>\n<\/tr>\n
                    Opening<\/td>\n111 mm<\/td>\n<\/tr>\n
                    Focal length<\/td>\n766 mm<\/td>\n<\/tr>\n
                    Focus report<\/td>\nf\/6.9<\/td>\n<\/tr>\n
                    Image circle<\/td>\n44 mm Full Frame<\/td>\n<\/tr>\n
                    Field corrector<\/td>\nIntegrated<\/td>\n<\/tr>\n
                    Lens holder<\/td>\n3\u2033 Rack & Pinion double speed<\/td>\n<\/tr>\n
                    Gearbox<\/td>\n1:10<\/td>\n<\/tr>\n
                    Rotation<\/td>\n360\u00b0 graduated<\/td>\n<\/tr>\n
                    Focuser stroke<\/td>\n30 mm<\/td>\n<\/tr>\n
                    Minimum length<\/td>\n664 mm<\/td>\n<\/tr>\n
                    Maximum length<\/td>\n815 mm<\/td>\n<\/tr>\n
                    Net weight<\/td>\n5.74 kg<\/td>\n<\/tr>\n
                    Weight with collars and dovetail<\/td>\n6.76 kg<\/td>\n<\/tr>\n
                    Rear threads<\/td>\nM78, M54, M48<\/td>\n<\/tr>\n
                    Sensor compatibility<\/td>\nUp to Full Frame<\/td>\n<\/tr>\n
                    Dovetail<\/td>\nVixen 300 mm<\/td>\n<\/tr>\n
                    Adapters included<\/td>\nM48x0.75, M54x0.75, 2\u2033 filter thread<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    Why choose Askar 111F?<\/h3>\n

                    The Askar 111F is an extremely attractive solution for astrophotographers who want a high-performance Full Frame scope without the complexity of external correctors and backfocus settings.<\/p>\n

                    Its modern optical formula, robust mechanics and extensive compatibility make it an ideal platform for building an advanced, scalable astrophotographic setup.<\/p>\n

                    With its excellent performance\/price ratio, Askar 111F is a particularly coherent scope for demanding deep-sky enthusiasts.<\/p>","protected":false},"excerpt":{"rendered":"

                    Askar 111F Flat-Field \u2013 Lunette APO Quadruplet Full Frame Haute Performance pour Astrophotographie L\u2019Askar 111F Flat-Field est une lunette astronomique apochromatique premium con\u00e7ue pour les astrophotographes recherchant une excellente qualit\u00e9 d\u2019image, une compatibilit\u00e9 Full Frame native et une utilisation simplifi\u00e9e. Avec son ouverture de 111 mm, sa focale de 766 mm et son rapport focal […]<\/p>\n","protected":false},"featured_media":14971,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[382],"product_cat":[755],"product_tag":[],"class_list":{"0":"post-14969","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-askar","7":"product_cat-lunettes-apochromatiques","9":"first","10":"on_supplier","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/14969","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=14969"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/14971"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=14969"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=14969"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=14969"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=14969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}