About this product
Model: wo_zs81_gd
Part Number: A-Z81GD
The NEW William Optics Zenithstar 81 APO features an air-spaced doublet lens with an Ohara FPL-53 ED glass element in a CNC machined ultra high precision lens cell with fully multi-coated optics for high resolution, high contrast images virtually free of false-colour.
Versatile f/6.9 native focal ratio or f/5.5 when used with 0.8x flattener / reducer (available separately).
Supplied with Dualside dovetail (Vixen fit one side and Arca-Swiss on the other side), mounting rings and a new carry handle bar that a guidescope can slide into.
CNC machined aluminium for a superior fit and finish.
Heavy duty, 1:10 dual speed, 2.5" Rack and Pinion focuser.
Available in Blue, Red or Gold anodised.
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
| Aperture | 81 mm |
| Focal Ratio | f/6.9 |
| Focal Length | 559 mm |
Image Circle | Full Frame with Flat 6AIII | | Objective Type | ED Doublet, Air Spaced,
Fully Multi-Coated, SMC coating. |
| Lens Shade | Retractable |
| Tube Weight | 3.53kg - Including dovetail & rings |
Tube length | 460mm Retracted, 560mm Extended | Interchangable T Mounts: | Canon EF, Nikon F, Sony E, Pentax, Micro Four Thirds |
Customer reviews
| Average Rating (2 Reviews): | |
27 June 2022 | Thomas
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.
William Optics Zenithstar 81 APO 14 May 2022 | Jan
makes beautiful little stars and a sharp image. Maximum satisfaction
FAQ
Please fill in the form below to ask a question.
Q1. Does the William Optics Zenithstar 81mm include a soft carry case?
Iit does include a soft carry case.
Wish List
95% Positive Feedback
Easy 30 Day Returns
Friendly Expert Support
Competitive Pricing
Fast Worldwide Shipping
