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Sky-Watcher USA

16" Flextube SkyScan GoTo Collapsible Dobsonian (S11840)

  • 2,95000
  • Save $ 45000

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Quick Overview

  • 16” (406 mm) Dobsonian-style Newtonian
  • 1800 mm focal length (f/4.4)
  • 2” dual-speed Crayford-style focuser with 1.25” adaptor
  • 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 SkyScan 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.



          16 inch

          Optical design

          Newtonian reflector

          Mirror diameter

          406 mm

          Mirror type

          Conical parabolic

          Focal length

          1800 mm




          8x50 straight through


          25 mm (72x), 10 mm (180x)


          2-inch dual-speed Crayford-style

          Base type

          Easy break-down Dobsonian

          Tube weight (pounds)


          Base weight (pounds)


          Assembled weight (pounds)


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