GSO 16″ Truss Dobsonian Specifications: Model: 16″ f/4.5 Dobsonian Optical design: Newtonian Reflector Aperture: 406mm (16″) Focal ratio: f/4.5 Focal length: 1829mm Primary mirror: BK7 Parabolic primary mirror, minimum 93% reflectivity Mirror coatings: Aluminum and silicone dioxide (SiO2) Secondary mirror: Minimum 93% reflectivity Secondary mirror holder: 4-vane all metal spider Secondary Mirror Obstruction: 25% Focuser: 2″ dual-speed Crayford Mount: Carbon Fibre Truss Dobsonian mount with tension clutch control Finderscope Right Angled, 8×50 Eyepiece 1: 9mm 1.25″ 52º Super-Plossl with 6mm eye-relief Eyepiece 2: 30mm 2″ 68º Superview with 22mm eye-relief Accessories: 35mm 2″ extension tube, 2″ to 1.25″ eyepiece adapter & 12v battery holder for the cooling fan Shipped size OTA Primary Mirror Box: 64cm x 64cm x 78cm / 25.2″ x 25.2″ x 30.7″ Shipped size OTA Secondary Mirror Cage: 68cm x 61cm x 31cm / 26.8″ x 24″ x 12.2″ Shipped size Base: 93cm x 93cm x 20cm / 36.6″ x 36.6″ x 7.9″ Shipped weight OTA Primary Mirror Box: 35kg Shipped weight OTA Secondary Mirror Cage: 10kg Shipped weight Base: 22kg Carbon Fibre Truss Tubes: Six carbon fibre truss poles arranged in a triangular formation form the main telescope tube joining the bottom primary mirror box to the top secondary cage. A truss constructions allows the telescope to fit in most normal cars and reduces the weight significantly vs solid tubes. The ‘open’ arrangement allows for quicker temperature equilibrium of the mirrors for the best performance. The CNC machined locking points and truss arrangement ensure a strong, rigid constructions that will hold collimation effectively. Standard Accessories: 8x 50mm fully multi-coated achromatic Finder Premium Plossl 9mm (1.25″) Premium SuperView 30mm (2″) 2 ” Eyepieces tray WHAT’S IN THE BOX? 16″ (406mm) f/4.5 Newtonian optical tube assembly 9mm Plossl 1.25″ eyepiece 30mm Premium SuperView 2″ eyepiece 2″ 10:1 Crayford focuser with adaptor for 1.25″ eyepieces 8×50 fully multi-coated achromatic finder Dobsonian base (assembly required) Cooling Fan Other Accessories 35mm 2″ focus extension tube with brass compression ring for eyepieces and accessories that require additional back focus distance 9mm 1.25″ 52º Plössl eyepiece with 6mm eye-relief 30mm 2″ 68º Superview eyepiece with 22mm eye-relief 8x AA battery holder with 2.1mm DC plug to fit the primary mirror cooling fan Solar Warning: Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result. Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present. Support Documents: GSO 16″ Truss Dobsonian manual Recommended Accessories: GSO 2″ 2X ED Barlow – To get more magnification while observing your favorite planet with high quality ED barlow. Universal Smartphone Adapter – To capture pictures of Moon and planets right in your smartphone immediately as you observe it. T-Ring (Canon) – To capture photos with your Canon EOS DSLR using Telescope tube as high focal length lens for camera. T-Ring (Nikon) – To capture photos with your NIKON DSLR using Telescope tube as high focal length lens for camera. T-Ring (Sony) – To capture photos with your Sony DSLR using Telescope tube as high focal length lens for camera. 1.25″ T-Mount/Adapter – To attached any DSLR directly in the eyepiece barrel when using in combination with DSLR TRing. Customized Telescope Padded bag: Designed to keep your Telescope safe from sudden damages to optics and body, safe of dust and dirt, easy carrying solution.
