{"id":12009,"date":"2025-11-21T18:59:55","date_gmt":"2025-11-21T17:59:55","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=12009"},"modified":"2025-11-21T19:03:19","modified_gmt":"2025-11-21T18:03:19","slug":"celestron-skymaster-20x80-jumelles-dastronomie","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/celestron-skymaster-20x80-jumelles-dastronomie\/","title":{"rendered":"Celestron SkyMaster 20\u00d780 - Astronomy binoculars"},"content":{"rendered":"

Celestron SkyMaster 20\u00d780 - Giant high-luminosity binoculars for long-distance observation and astronomy<\/h3>\n

Visit Celestron SkyMaster 20\u00d780<\/strong> are among the most popular giant binoculars for astronomers and long-distance terrestrial observers. With a 20x magnification<\/strong> and huge 80 mm lenses<\/strong>, They are designed for maximum brightness in low-light conditions, as well as impressive detail on distant subjects.<\/p>\n

Thanks to their Porro BaK-4 prisms<\/strong>, their multi-layer lenses<\/strong> and their very precise focus<\/strong>, SkyMaster 20\u00d780 lenses offer a bright, high-contrast field of view perfectly suited to observing the night sky, landscapes, mountainous terrain or distant subjects. They also feature a integrated tripod adapter rod<\/strong>, particularly useful given their weight and power.<\/p>\n

Giant 80 mm lenses: maximum brightness<\/h3>\n

The objectives of 80 mm<\/strong> collect much more light than standard binoculars, enabling :<\/p>\n

    \n
  • a excellent visibility at dusk<\/strong> and in dark conditions ;<\/li>\n
  • easy observation of the brilliant deep-sky objects<\/strong> (clusters, nebulae, multiple stars) ;<\/li>\n
  • the ability to distinguish between details of far-flung terrestrial subjects<\/strong> ;<\/li>\n
  • a high twilight factor<\/strong> 40, a guarantee of low-light performance.<\/li>\n<\/ul>\n

    The focal length of the lenses (328.6 mm) gives a light ratio of around f\/4.1 - very effective for maximizing the brilliance of the objects observed.<\/p>\n

    20x magnification: perfect for astronomy and long-distance work<\/h3>\n

    Magnification 20x<\/strong> is an excellent compromise between power and ease of use:<\/p>\n

      \n
    • powerful enough to reveal lunar details<\/strong>, star clusters or distant landscape features; ;<\/li>\n
    • more stable than 25x or 30x while remaining highly immersive ;<\/li>\n
    • suitable for both astronomy and daytime observation.<\/li>\n<\/ul>\n

      Combined with a 4 mm<\/strong>, These binoculars offer far superior low-light viewing comfort compared with smaller-pupil models.<\/p>\n

      Wide field of vision for comfortable viewing<\/h3>\n

      Despite their power, the SkyMaster 20\u00d780 offer a pleasant field of view:<\/p>\n

        \n
      • Angular field<\/strong> : 3,7\u00b0<\/li>\n
      • Linear field<\/strong> Dimensions : 195 ft to 1000 yds (\u2248 65 m to 1000 m)<\/li>\n
      • Minimum focusing distance<\/strong> : 33 m<\/li>\n
      • Exceptional eye relief<\/strong> 18 mm - ideal for spectacle wearers<\/li>\n<\/ul>\n

        Viewing is therefore immersive, bright and comfortable, even during long sessions.<\/p>\n

        BaK-4 prisms and Multi-Coated optics<\/h3>\n

        Optical quality is one of the SkyMaster 20\u00d780's strong points. They include :<\/p>\n

          \n
        • Porro prisms in BaK-4 glass<\/strong> for high light transmission and a perfectly clear pupil.<\/li>\n
        • Multi-Coated treatments<\/strong> on lenses for a enhanced contrast<\/strong> and reduced glare.<\/li>\n
        • Very sharp focus<\/strong> across the entire field, thanks to the optimized internal focusing system.<\/li>\n<\/ul>\n

          The result: luminous images, more punctual stars and a visual quality adapted to the demands of amateur astronomy.<\/p>\n

          Robust construction and secure grip<\/h3>\n

          The SkyMaster 20\u00d780 offers solid, reliable construction:<\/p>\n

            \n
          • Rubber coating<\/strong> for a optimal grip<\/strong> and good protection against light shocks.<\/li>\n
          • Water resistance<\/strong> (water-resistant) for outdoor use.<\/li>\n
          • Durable structure ideal for the mountains, seaside or overnights.<\/li>\n<\/ul>\n

            Please note: the binoculars are not nitrogen-filled, so they are not totally impervious to internal fogging.<\/p>\n

            Integrated tripod mount for maximum stability<\/h3>\n

            Given their considerable weight (2.126 kg<\/strong>) and their magnification, comfortable observation requires the use of a tripod. Celestron makes this easy with :<\/p>\n

              \n
            • a integrated tripod adapter rod<\/strong>, more stable than a simple screw adapter; ;<\/li>\n
            • a universal compatibility<\/strong> with most photo and video tripods.<\/li>\n<\/ul>\n

              With a tripod, SkyMaster 20\u00d780s reveal all their optical quality and become a formidable instrument for scrutinizing the sky or distant landscapes.<\/p>\n

              Accessories included<\/h3>\n

              The binoculars are delivered ready to use, with all the essential accessories:<\/p>\n

                \n
              • Lens caps<\/strong><\/li>\n
              • Rainguard<\/strong> (eye protection)<\/li>\n
              • Nylon carrying case<\/strong><\/li>\n
              • Neck strap<\/strong><\/li>\n
              • Cleaning cloth<\/strong><\/li>\n
              • Instruction manual<\/strong><\/li>\n<\/ul>\n

                Astronomy performance<\/h3>\n

                With their large lenses and comfortable exit pupil, SkyMaster 20\u00d780s are an excellent choice for the night sky:<\/p>\n

                  \n
                • Magnitude limit<\/strong> up to 12,0<\/strong> under excellent skies.<\/li>\n
                • Moderate sky : 11,0<\/strong> about.<\/li>\n
                • In poor skies : 10,0<\/strong>.<\/li>\n
                • Beautiful views of the Moon<\/strong>, open clusters (Pleiades, Hyades), globular clusters (M13, M3), bright nebulae and more.<\/li>\n<\/ul>\n

                  For a motivated beginner or an amateur looking for a simple yet powerful solution, these binoculars offer a real gateway to astronomy.<\/p>\n

                  Detailed 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\n\n
                  Type<\/strong><\/td>\nGiant Porro prism binoculars<\/td>\n<\/tr>\n
                  Magnification<\/strong><\/td>\n20x<\/td>\n<\/tr>\n
                  Lens diameter<\/strong><\/td>\n80 mm (3.15\u2033)<\/td>\n<\/tr>\n
                  Lens focal length<\/strong><\/td>\n328.6 mm (12.94\u2033)<\/td>\n<\/tr>\n
                  Angular field<\/strong><\/td>\n3,7\u00b0<\/td>\n<\/tr>\n
                  Linear field at 1000 m<\/strong><\/td>\n\u2248 65 m (195 ft at 1000 yds)<\/td>\n<\/tr>\n
                  Output pupil<\/strong><\/td>\n4 mm<\/td>\n<\/tr>\n
                  Eye relief<\/strong><\/td>\n18 mm<\/td>\n<\/tr>\n
                  Minimum focusing distance<\/strong><\/td>\n33 m (108 ft)<\/td>\n<\/tr>\n
                  Interpupillary distance<\/strong><\/td>\n56 - 72 mm<\/td>\n<\/tr>\n
                  Diopter adjustment<\/strong><\/td>\n-4 \u00e0 +8<\/td>\n<\/tr>\n
                  Twilight factor<\/strong><\/td>\n40<\/td>\n<\/tr>\n
                  Relative brightness<\/strong><\/td>\n16<\/td>\n<\/tr>\n
                  Prisms<\/strong><\/td>\nBaK-4, Porro<\/td>\n<\/tr>\n
                  Optical treatments<\/strong><\/td>\nMulti-Coated<\/td>\n<\/tr>\n
                  Environmental protection<\/strong><\/td>\nWater resistant, not nitrogen purged<\/td>\n<\/tr>\n
                  Weight<\/strong><\/td>\n2126 g (75 oz)<\/td>\n<\/tr>\n
                  Dimensions<\/strong><\/td>\n228 \u00d7 120 \u00d7 325 mm (9.0\u2033 \u00d7 4.7\u2033 \u00d7 12.8\u2033)<\/td>\n<\/tr>\n
                  Tripod<\/strong><\/td>\nBuilt-in adapter - tripod highly recommended<\/td>\n<\/tr>\n
                  Case<\/strong><\/td>\nSoft nylon case<\/td>\n<\/tr>\n
                  Warranty<\/strong><\/td>\nLimited lifetime warranty (subject to Celestron conditions)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                  Solar safety warning<\/h3>\n

                  Never observe the sun with these binoculars without a certified sun filter.<\/strong><\/p>\n

                    \n
                  • Never look directly at the Sun, with or without optics: risk of irreversible eye damage<\/strong>.<\/li>\n
                  • Never project an image of the Sun through binoculars: risk of internal heat damage<\/strong>.<\/li>\n
                  • Do not leave the instrument unattended, especially in the presence of children.<\/li>\n<\/ul>\n

                    Who are Celestron SkyMaster 20\u00d780 for?<\/h3>\n

                    These binoculars are designed for amateur astronomers<\/strong>, to nature observers<\/strong> and long-distance enthusiasts who want a bright, powerful and immersive lens. They offer an excellent compromise between performance, price, versatility and ease of use.<\/p>","protected":false},"excerpt":{"rendered":"

                    Celestron SkyMaster 20×80 \u2013 Jumelles g\u00e9antes haute luminosit\u00e9 pour observation longue distance et astronomie Les Celestron SkyMaster 20×80 font partie des jumelles g\u00e9antes les plus appr\u00e9ci\u00e9es des amateurs d\u2019astronomie et d\u2019observation terrestre \u00e0 longue distance. Avec un grossissement de 20x et d\u2019immenses objectifs de 80\u00a0mm, elles sont con\u00e7ues pour offrir une luminosit\u00e9 maximale en conditions […]<\/p>\n","protected":false},"featured_media":12010,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[413],"product_cat":[757],"product_tag":[],"class_list":["post-12009","product","type-product","status-publish","has-post-thumbnail","product_brand-celestron","product_cat-jumelles-lunettes_refracteurs","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/12009","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=12009"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/12010"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=12009"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=12009"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=12009"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=12009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}