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Sky-Watcher USA

12" Flextube SkyScan GoTo Collapsible Dobsonian (S11820)

  • 1,88000
  • Save $ 22500

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Quick Overview

  • 12” (305 mm) Dobsonian-style Newtonian
  • 1500 mm focal length (f/4.9)
  • 2” single-speed Crayford-style focuser with 1.25” adapter
  • 4-element Plössl 25mm and 10mm 1.25” eyepieces
  • 8x50 RA erect-image finderscope
  • SynScan hand controller with 42,000 object database
  • GoTo Dobsonian base

      Collapsible OTAs

      Makes transportation and storage of your telescope simple and convenient

      Binoviewer Settings

      A Sky-Watcher exclusive feature! Preset detents makes adjusting for binoviewing a snap. No more additional optics or crazy spacers, just drop, pop and view! 

      GoTo Accuracy

      The patented Sky-Watcher SynScan hand controller operates the the mount at up to 5 arc minute pointing accuracy. 

      Sky-Watcher Flextube SkyScane GoTo Dobsonians are precision engineered instruments that allow you to easily find and enjoy viewing night sky treasures. With its patented collapsible tube design, these Dobsonians are truly the ultimate in portability and performance.

      Unlike other truss tube designs, the Sky-Watcher Flextube SkyScan Collapsible Dobsonian does not need to be disassembled between uses. It transports as two compact pieces that can be assembled and ready to use in just seconds! It is easy to collimate once set up, and it holds its collimation throughout the evening!

      The hand controller allows you explore the night sky at the touch of a button, allowing automatic slewing to over 42,900+ objects. The Sky-Watcher Flextube SkyScan Dobsonian series combines the convenience and affordability of the traditional Dobsonian with the convenience of a computerized Go-To telescope.



      12 inch

      Optical design

      Newtonian reflector

      Mirror diameter

      305 mm

      Mirror type

      Standard parabolic

      Focal length

      1500 mm




      8x50 RA erect-image


      25 mm (48x), 10 mm (120x)


      2-inch single-speed Crayford-style

      Base type

      Standard Dobsonian

      Tube weight (pounds)


      Base weight (pounds)


      Assembled weight (pounds)


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      For our customers who dream of expanding their horizons and gazing deeper into the night sky, we offer personalized telescope upgrade paths. Learn More> 

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