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Celestron Stereo Binocular Viewer - 93691

Celestron Stereo Binocular Viewer - 93691 - Main image
$164.97 $249.95 In stock

Category: Telescope Accessories

The Celestron Stereo Binocular Viewer allows you to adapt two eyepieces to your telescope and view with both eyes simultaneously. In addition to eliminating eye fatigue associated with viewing through one eye for a prolonged period of time, this 1.25-inch bino viewer also provides a three-dimensional effect when you're observing many celestial objects. In addition, it will improve contrast on deep-sky objects and solar system objects. The Stereo Binocular Viewer is designed to work with Schmidt-Cassegrain telescopes (SCT) and many refracting telescopes.


The Stereo Binocular Viewer requires you use two eyepieces of equal focal lengths and optical design. Your telescope will come with one or more eyepieces - you will need to purchase a matching eyepiece for use with the binoviewer.


High-quality FMC BAK-4 prisms to reduce light loss Quality control inspected for collimation and performance.

  • Fully Multi-Coated BAK-4 prisms
  • Foam-lined aluminum storage case
  • Eyepiece diopter scales for sharp focus
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Customer Reviews (5.0 / 5 · 5 reviews)

Miles R. ★★★★★

The first night I used it on the moon, both eyes synced up instantly and the view felt almost 3D. Eye strain is totally gone now, even after an hour of scanning the sky.

Scarlett ★★★★★

Using both eyes at the same time completely changes how I see the moon — the depth makes craters pop in a way I didn't expect from just the description. The elimination of eye strain alone has let me observe for an extra hour without needing a break.

Daniel D. ★★★★★

I've been putting off swapping eyepieces back and forth for years, and now with both eyes open the moon looks like it has actual depth instead of a flat disc. The lack of eye strain after a long session is the real win here, and it's surprisingly solid once you get the collimation dialed in.