Telescope

We are offering our 20-inch aperture Dobsonian telescope with many extras for sale in order to downscale a bit. This instrument delivers extraordinary views of planets and deep space objects. Please contact Jim if you are interested. Details below…

  • Obsession™ Classic 20-inch ƒ5 telescope, mfd. Oct. 2003, sn: 927
    • Second owner, excellent condition, with many extras
    • Primary mirror by John Hudek of Galaxy Optics
      • Certification by wavefront interferometry, Strehl ratio 0.931
    • RXDesign stainless steel teflon coated primary mirror support sling
    • ApplePly mirror box, aluminum truss tubes
    • Steel wheelbarrow mirror box handles, pneumatic wheels
    • Starlight Instruments 2.0 in. FeatherTouch™ focuser w/ 1.25 in. adapter
    • Ripstop nylon light shroud with storage bag
    • Telrad™ illuminated reflex finder sight
    • AstroSystems truss tube storage bag
    • AstroSystems primary mirror cooling fan system
    • AstroSystems secondary cage storage bag
    • AstroSystems secondary mirror electronic dew heater (custom truss tube wiring)
    • Custom wooden external primary mirror cleaning stand
    • Televue 8-24mm 1.25 in. click-stop zoom eyepiece
    • Howie Glatter 1.25/2.0 in. 635nm holographic barlowed laser collimator
    • 2.0 in. Neutral density moon filter
    • Metal observation step ladder with accessory tray
    • Aluminum SUV/pickup folding loading ramps


  • RXDesign StellarCAT™ (ServoCAT™, c. 2005) kit installed by current owner
    • Complete goto functionality, two-star alignment, precision servo control
    • Wildcard Innovations Argo Navis™ Digital Telescope Computer
    • Powered ground board, 12 volt system, power cable
    • 10K resolution optical encoders on both axes
    • Wired CATtail™ stalk mirror box mount for controller, computer
    • ServoCAT mirror box mounting bracket
    • Wireless and wired handpad controllers
    • Serial to USB Interface cable


  • All original documentation including primary mirror test data.
  • For pickup in Cloudcroft, NM—fits in most SUVs. Possible delivery negotiable. 
  • Asking $10,000.
© Cloudhaven 2021