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Orion Telescopes
Orion Premium Linear BinoViewer for Telescopes
Accepted Payment
Expected Ship Date: 09/09/2024

  • Revolutionary new stereo binocular viewer design has big advantages over traditional binoviewers
  • With zero backfocus requirement, can be used with any type of telescope - even Newtonians - without need for extender lenses
  • Features a dielectric-coated beam-splitting mirror - not a prism - which reduces aberrations and improves contrast
  • Twist-tight collars on the eyepiece holders are self-centering to eliminate problematic eyepiece offset.
  • Use any two 1.25" eyepieces (sold separately) for 3D-like, immersive views of astronomical and scenic daytime subjects

Learn more
Item #  52054


"... there are some very significant differences that set (the Orion BinoViewer) apart from other (binoviewers). Foremost is its ability to work with any telescope that accepts 1-inch eyepieces, even Newtonians with low-profile focusers that have limited travel. If your scope comes to focus with a given 1-inch eyepiece, you can add the Orion BinoViewer and still be in focus without changing the magnification or field of view ...

"The image was perfectly focused and the field looked the same, just as advertised, and rather impressive at that ...

"If you've ever wanted a binoviewer but were put off by the need for lots of back focus or the expense of sets of matched eyepieces, then now might be the time to consider the Orion BinoViewer."

Dennis Di Cicco
Sky & Telescope Magazine
May 2020

Enjoy amazing 3D-like views through any telescope with our newest and most advanced stereo binocular viewer! The Orion Premium Linear BinoViewer makes observing a wonderfully comfortable and immersive experience, because you're using both eyes instead of just one.

Unlike other binocular viewers on the market, our innovative Premium Linear Binoviewer boasts a sliding "linear" housing for adjusting the interpupillary distance (IPD) instead of the traditional "folding" body. That matters because the folding types are more prone to collimation problems, whereby the two barrels of the binoviewer become misaligned, causing "double images" and eye strain. With the Premium Linear BinoViewer you just slide the two halves of the housing inward or outward to set the IPD — from 58mm to 74mm — and there's a handy IPD scale laser engraved on the housing so you'll know exactly where to set it the next time for your (or anyone's) eyes.

The eyepiece holders of the Premium Linear Binoviewer accept any two identical 1.25" telescope eyepieces (sold separately), and have convenient twist-tight holding collars that are self-centering. No little thumbscrews to mess with and no chance of miscollimation due to eyepiece offset in the barrels. The right eye side is equipped with a helical diopter adjustment. The Binoviewer's tapered 1.25" barrel minimizes the possibility of accidental fall-out, which is good because at 1 lb. 8 oz., this viewer adds a hefty load onto the diagonal or instrument itself. The barrel is threaded for use of Orion 1.25" filters. Another big advantage of the Orion Premium Linear BinoViewer is that it does not utilize prisms in its optical design — just mirrors and lenses — thereby eliminating optical aberrations associated with prisms, while improving contrast. A knife-edge mirror is employed for light path splitting, rather than a prism used in traditional binoviewers. The dielectric-coated mirror, which boasts 99 percent reflectivity, minimizes differences in brightness, contrast, and color tone between the left and right images compared to prism-containing binoviewers. And four of the internal lenses are made from lanthanum glass, which effectively suppresses chromatic aberration.

Other big advantages of the Orion Premium Linear BinoViewer over most competing binoviewers include:

  • The Premium Linear BinoViewer can be used with any type of telescope, even reflectors.
  • The Premium Linear BinoViewer requires no additional backfocus or in-travel. It does not alter the magnification of the optical system. And you won't need a Barlow lens to reach focus as with some other binoviewers.
  • Its built-in image erecting system means you can use the Premium Linear BinoViewer without a diagonal, if desired, and get a "normal" upright image.
  • Low-power viewing is both possible and pleasurable with the Premium Linear BinoViewer, which is not the case with many binoviewers, since you don't need a Barlow lens with ours to achieve focus.

To use the Orion Premium Linear BinoViewer with a diagonal, we recommend the Orion Pentaprism 90-degree 1.25" Diagonal (part #52055), as it will provide a correctly oriented image. Use of a standard star diagonal or a "correct-image" diagonal will both yield an upside-down image.

The Premium Linear Binoviewer comes complete with a roomy, waterproof hard carrying case for protection and convenient transport of your device. There's enough room inside to allow storage of a pair of 1.25" eyepieces and the Pentaprism diagonal (all sold separately) in addition to the BinoViewer! Whether you're gazing during the daytime or under the stars at night, the versatile and revolutionary Orion Premium Linear BinoViewer will bring a whole new dimension of stereoscopic immersion and comfort to your observing sessions — no matter what type of telescope you are using. Get yours today!



Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.


Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • User level
  • Coatings
  • Weight (oz.)
  • Additional included accessories
  • Other features
  • Warranty
    One year

Waterproof Case

Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

Standard Delivery: $0.00
3 Day Delivery: $20.00
2 Day Delivery: $20.00
Next Day Delivery: $40.00

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