Used, as new William Optics 50mm Slide Based Scope with 1.25" Rotolock Gold

by All Major Brands supported

Price: £95.00


New William Optics 50mm f/4 Uniguide Slide-base Guide Scope.

Features a unique 1.25" RotoLock adapter, perfect for securely attaching guide cameras and other 1.25" accessories and a dovetail to slide into the carry handle being supplied with the latest William Optics (2019 onwards) telescopes.

Removing the RotoLock reveals an M48 male thread. 

Suitable for use with guide cameras fitted with a 1.25" nosepiece.  I.e. ZWO ASI120 Mini, ASI290 Mini, ASI174 Mini, Starlight Xpress Lodestars, etc. 

Can be used with the William Optics Slide-base Guide Rings.


  • High quality, 50mm fully multi coated objective
  • f/4 Focal Ratio / 200mm Focal Length
  • 5.7º Field of View
  • Superb William Optics fit and finish
  • 54mm Tube Diameter, 58mm Dew Shield Diameter
  • Weighs only 460g!