William Optics Zenithstar 81 F6.9 Red
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Lens Diameter: 81mm
Focal length: 558.9mm
Speed: f6.9
Maximum meaningful magnification: 202.5 x
Minimum meaningful magnification: 12.96 x
Maximum resolution (arcsec / pixel): 1.43
Limit Magnitude: 12.24
Coatings: Others
The William Optics Zenithstar 81 APO III is a telescope with excellent optical performance, easy to use and very portable. By using FPL-53 glass in the optics which provides excellent color correction and produces sharp images.
The Zenithstar 81 is also equipped with the latest, newest accessories such as the 2 in 1 dovetail, suitable for Vixen and Arca Swiss systems. The other new accessory is the carrying handle from William Optics, which has a slot into which you can slide the guide scope from William Optics into it. Only tighten a few screws and the whole is fixed.
Specifications
Opening: 81mm
Focal length: 558.9mm
Speed: f6.9
Maximum meaningful magnification: 202.5 x
Minimum meaningful magnification: 12.96 x
Maximum resolution (arcsec / pixel): 1.43
Limit Magnitude: 12.24
Coatings: Others
Focuser type: Rack & Pinion
Focuser size: 2.5 inch
Focuser rotatable: Yes
Focuser fine adjustment: Yes
Type: Refractor
Type of optics: Apochromat doublet
Tube material: Aluminum
Tube weight: 3.53kg
Tube length: 460mm
In The Box
ZenithStar 81
Vixen / Swiss Arca dovetail
Brackets
Carrying handle with Guide Scope mounting option
Bahtinov mask incorporated in the cover cap.
Storage bag
