William Optics Binoviewer
Best complete kit for amateur astronomers seeking immersive planetary viewing.
Experience a more natural, immersive view of the night sky by using both eyes simultaneously. This complete kit simplifies the transition to binocular observing, providing everything needed to achieve focus and comfort with most standard telescopes.
$310.00
at
Williamoptics
Who it's for
- Visual observers seeking a ready-to-use kit without extra purchases
- Planetary enthusiasts wanting a more immersive and comfortable viewing experience
- Discerning stargazers who prioritize optical clarity and build quality
Who should skip it
- Owners of lightweight or portable mounts sensitive to balance changes
- Deep-sky hunters focused on observing extremely faint nebulae or galaxies
- Users of Newtonians or refractors with limited focuser travel range
Performance breakdown
Viewing Comfort
Dual-eye observation significantly reduces eye strain during long celestial sessions.
Optical Clarity
BaK-4 prisms deliver crisp, high-contrast views across the entire field.
Focus Precision
Individual helical focusers allow for perfectly dialed-in adjustments for each eye.
Setup Versatility
Included Barlow nosepiece effectively solves common back-focus issues for most telescopes.
Build Integrity
Robust construction and compression rings ensure your eyepieces remain securely protected.
Ease of Integration
Standard 1.25-inch barrel sizing makes this compatible with most existing setups.
Key Specs
Prism Material
BaK-4 FMC
IP Accommodation
54mm to 75mm
Clear Aperture
20.2mm
E.P. Holders
Helical focusing, compression rings
Dimensions
120mm x 112mm x 42mm
Optical Path
100mm
Weight
520g
Is Set
Yes
Barrel Diameter
1.25 inches
Apparent Field of View
66 degrees
Know before you buy
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