William Optics Zenithstar 81 APO
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William Optics Zenithstar 81 APOWilliam Optics Zenithstar 81 APOWilliam Optics Zenithstar 81 APO
William Optics Zenithstar 81 APOWilliam Optics Zenithstar 81 APOWilliam Optics Zenithstar 81 APO

William Optics Zenithstar 81 APO

£599.00
  (2 Reviews)
✓ 2 year warranty
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4x in stock shipped 1-2 working days

About this product

Model:  wo_zs81_gd
Part Number:  A-Z81GD

Now includes a useful slip-on Bahtinov focus mask and a carry handle that accepts an optional guidescope. 

The William Optics Zenithstar 81 APO features air-spaced ED doublet optics with an Ohara FPL-53 glass element in a robust CNC-machined lens cell.  

Premium, fully multi-coated optics deliver high-resolution, high-contrast images virtually free of false colour. 

The versatile f/6.9 native focal ratio can be reduced to f/5.5 when used with a 0.8x flattener/reducer (available separately).

CNC machined aluminium throughout for a superior fit and finish and fitted with a heavy-duty, 2.5", 1:10 dual-speed, Rack & Pinion focuser. 

Supplied with a Dualside dovetail (Vixen fit one side, Arca-Swiss on the other), mounting rings and a soft carry/storage case. 

 

FEATURES

  • 81mm f/6.9 Doublet air-spaced APO
  • CNC machined ultra-high precision lens cell
  • FPL-53 ED glass element for enhanced colour correction
  • 2.5 inch Heavy Duty, dual-speed Rack and Pinion focuser
  • 0.8x Reducer / Flattener available separately
  • Innovative Bahtinov mask cover included!
  • Supplied with mounting rings, CNC carry handle, Dual side Vixen/Arca Swiss dovetail bar and Bahtinov mask cover

Field of View Simulator

What's in the box

  • Telescope OTA
  • Mounting Rings
  • CNC made Carry Handle
  • Dual Vixen / Arca Swiss Dovetail
  • Bahtinov Mask Cover

Specifications

Aperture81 mm
Focal Ratiof/6.9
Focal Length559 mm
Image CircleFull Frame with Flat 6AIII
Objective TypeED Doublet, Air Spaced,
Fully Multi-Coated, SMC coating.
Lens ShadeRetractable
Tube Weight3.53kg - Including dovetail & rings
Tube length460mm Retracted, 560mm Extended
Interchangable T Mounts:Canon EF, Nikon F, Sony E, Pentax, Micro Four Thirds

Customer reviews

Average Rating (2 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
ZenithStar 81APO
27 June 2022  | 

Just love this scope, looks and feels QUALITY. Used a couple of times and everything looks fine. And thank to Alex for his help and information.


Rating (max 5):  
William Optics Zenithstar 81 APO
14 May 2022  | 

makes beautiful little stars and a sharp image. Maximum satisfaction

FAQ

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Q1. Does the William Optics Zenithstar 81mm include a soft carry case?

Iit does include a soft carry case.

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