William Optics Binoviewer

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low Low stock (1)
1.60 kg
Our price:

including VAT 20.00 % ( £47.17 )



William Optics Binoviewers provide superb quality at a very low price.
With typical WO high quality construction, these binoviewers will add to your observing experience and enjoyment.
Rich field, Lunar and planetary observation take on a new meaning when using Binoviewers.

The package includes the following:


  • Exclusive Gift Box
  • 1.25" Binoviewer with anti-marring compression rings, high quality prism made from BaK4 glass
  • 1.6x corrective optics / Barlow nosepiece (to allow focus with most refractors and Catadioptrics - note may not focus on some Newtonians)
  • 2 x 20mm SWAN 66 degree eyepieces


Technical information:
BAK4 Prisms


  • High-quality BaK4 prisms with 20mm clear aperture for maximum brightness and contrast with any telescope.
  • Anti-marring brass compression rings for your eyepieces.
  • Individual eyepiece focus adjustment.
  • Fully Multi Coated.


Image is for demonstration purposes only. Telescope and diagonal are not included...

WO Fit & Finish


  • Large chromed thumbscrews and anodized aluminum.
  • White powder painting.
  • Very useful optional 2x Corrector lens / Barlow and Extenders are available separately for telescopes with special back-focus issues.



Prism material BaK-4 FMC
Inter Pupillary Accomodation 54mm to 75mm
Clear Aperture 20.2mm
Eyepiece Holders Helical focusing, compression rings
Dimensions 120mm x 112mm x 42mm
Optical Path 100mm (4")
Weight approx. 520g (without eyepieces)



Please note when used with ZS80II ED the Binoviewers will not reach focus with a 2" diagonal. We cannot guarantee you will reach focus without an optical corrector/barlow with other brands' telescopes.


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