USED - 10" Flextube Collapsible Dobsonian (S11720)
USED - 10" Flextube Collapsible Dobsonian (S11720)
USED - 10" Flextube Collapsible Dobsonian (S11720)

Sky-Watcher USA

USED - 10" Flextube Collapsible Dobsonian (S11720)

Regular price
$ 799.00
Sale price
$ 599.00
Unit price
Only 1 Left!

In Stock


This scope is in great condition! The optics are clean and there is little to no cosmetic wear. Includes 25mm & 10mm eyepieces, finderscope, and 2"-1.25" eyepiece adapter.

LOCAL PICKUP RECOMMENDED - We received this scope without its original packaging. Shipping is possible but will be quoted separately.

Quick Overview

  • 10" (254 mm) Dobsonian-style Newtonian
  • 1200 mm focal length (f/5)
  • 2" Crayford-style focuser with 1.25" adapter
  • 4-element Plössl 25 mm and 10 mm 1.25" eyepieces
  • 8x50 right angle erect-image finderscope
  • Solid rocker-mount with Teflon bearings and tension clutch for altitude
  • Teflon bearing for azimuth
  • Eyepiece height at zenith: 48”

      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! 

      Reconciling the desire for a large aperture telescope with the reality of a limited budget is an age-old problem. But it’s a problem with an easy answer: Sky-Watcher Flextube Collapsible Dobsonians.

      Sky-Watcher USA Dobsonian telescopes deliver high-quality optics, huge aperture, solid construction and superb value. And only Sky-Watcher Dobsonians provide the extra portability and convenience of felxtube collapsible optical tubes. If you’re looking for a big light bucket with a little price tag, look no further! Sky-Watcher USA has what you need.

      With apertures ranging from the ultra-portable 8 inch up to the monster light- gathering 16 inch model, all Sky-Watcher USA Dobsonians come complete with Crayford-style focuser, two Super Plössl eyepieces and finderscope.



      10 inch

      Optical design

      Newtonian reflector

      Mirror diameter

      254 mm (10 in)

      Mirror type

      Standard parabolic

      Focal length

      1200 mm




      8x50 right angle


      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)


      Personal Upgrade Path

      Buy risk-free: When it’s time to trade up you’ll get the most value for your used gear.