{"id":2608,"date":"2025-03-06T15:30:57","date_gmt":"2025-03-06T14:30:57","guid":{"rendered":"https:\/\/deep-space-astronomy.geekworkers.dev\/produit\/newton-150-hnt-f-2-8\/"},"modified":"2025-11-18T18:13:32","modified_gmt":"2025-11-18T17:13:32","slug":"newton-150-hnt-f-2-8","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/newton-150-hnt-f-2-8\/","title":{"rendered":"Newton Askar 150mm HNT-AL f\/2.8 astrograph"},"content":{"rendered":"

Sharpstar 15028HNT-AL - the f\/2.8 hyperbolic astrograph that brings out the light<\/h3>\n
\n

Designed for high-resolution imaging, the 15028HNT-AL<\/strong> concentrates a 150 mm hyperbolic primary mirror and a triplet corrector integrated into a compact aluminum tube. At f\/2.8, it captures as many photons in half the time<\/em> than an f\/4 tube - enough to multiply wide-field projects with complete peace of mind.<\/p>\n<\/div>\n

For example:<\/p>\n

\"\u957f\u53cb\u6c14\u4f53\"<\/p>\n

\n

Ultra-fast & full-format optics<\/h3>\n
    \n
  • Hyperbolic primary mirror in PZ33<\/strong> (Pyrex-like) \u00d8150 mm, reflectivity \u2248 97 %<\/strong> (multi-layer dielectric coating).<\/li>\n
  • Focal length 420 mm (f\/2.8)<\/strong>a field wide angle<\/em> of 6\u00b0, easily illuminating an image circle of 44 mm (full format)<\/strong>.<\/li>\n
  • Corrector triplet air-spaced<\/strong> (including 1 ED lens) housed in the eyepiece holder: fine stars and coma eliminated right down to the corners.<\/li>\n
  • Secondary \u00d870 mm (minor axis) for even illumination on 24\u00d736 sensors.<\/li>\n<\/ul>\n

    \"\u957f\u53cb\u6c14\u4f53\"<\/p>\n<\/div>\n

    \n

    Robust & precise mechanics<\/h3>\n
      \n
    • Tube and CNC parts in all-aluminum<\/strong>reinforced rings with oversized butterfly screws.<\/li>\n
    • Lens holder rack-&-pinion 2\u2033 dual-speed<\/strong> (20 mm stroke) + (20 mm stroke) + (20 mm stroke) + (20 mm stroke) 360\u00b0 rotator<\/strong> integrated, 3 kg capacity.<\/li>\n
    • Easy collimation : 3\u00d73<\/strong> primary adjusting screws + one-piece CNC secondary spider for sharp egrets.<\/li>\n
    • Losmandy 200 mm base plate and 200 mm handle included; side-mounted finder base for accessories.<\/li>\n<\/ul>\n<\/div>\n
      \n

      Nomadic but powerful<\/h3>\n
        \n
      • Length :<\/strong> 443mm - \u00d8 :<\/strong> 193 mm - OTA weight :<\/strong> 4.8 kg (6 kg with rings & dovetail).<\/li>\n
      • Back-focus 55 mm<\/strong> (from M48 thread): compatible with SLR, hybrid and astro cameras.<\/li>\n
      • Visual magnitude limit 12.7 - Theoretical resolution 0.77\u2033.<\/li>\n<\/ul>\n<\/div>\n
        \n

        Key specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
        Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
        Opening<\/td>\n150 mm<\/td>\n<\/tr>\n
        Focal length \/ F-ratio<\/td>\n420 mm - f\/2.8<\/td>\n<\/tr>\n
        Design<\/td>\nNewtonian hyperbolic + triplet corrector (1 ED)<\/td>\n<\/tr>\n
        Image circle<\/td>\n44 mm (full format)<\/td>\n<\/tr>\n
        Effective field<\/td>\n6 \u00b0<\/td>\n<\/tr>\n
        Secondary (minor axis)<\/td>\n70 mm<\/td>\n<\/tr>\n
        Tube (L \u00d7 \u00d8)<\/td>\n443 mm \u00d7 193 mm<\/td>\n<\/tr>\n
        Mass OTA<\/td>\n4.8 kg (6 kg overall)<\/td>\n<\/tr>\n
        Lens holder<\/td>\nRack-&-pinion 2\u2033 dual-speed + 360\u00b0 rotator<\/td>\n<\/tr>\n
        Back-focus<\/td>\n55 mm (from M48\u00d70.75)<\/td>\n<\/tr>\n
        Resolution \/ Mag. limit<\/td>\n0.77\u2033 - 12.7 mag<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

        With the Sharpstar 15028HNT-AL<\/strong>Go light speed: immortalize diffuse nebulae, isolated galaxies or complex stellar fields in record time.<\/p>\n

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

        Don't miss this exceptional promotion on this wide-field Astrograph<\/p>","protected":false},"featured_media":7315,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[386],"product_cat":[747,816,392],"product_tag":[],"class_list":{"0":"post-2608","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-sharpstar","7":"product_cat-newton","8":"product_cat-nouveautes","9":"product_cat-telescopes_reflecteurs","11":"first","12":"on_supplier","13":"sale","14":"taxable","15":"shipping-taxable","16":"purchasable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/2608","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=2608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/7315"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=2608"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=2608"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=2608"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=2608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}