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Orion Binocular Viewer for Telescopes with Sirius Eyepieces
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Orion Binocular Viewer for Telescopes with Sirius Eyepieces
Was $249.99
Now $199.99
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  • With our Binocular Viewer and eyepiece pair package, you'll see added depth in every astronomical view
  • Includes thread-on 2x Barlow lens so you can choose two levels of magnification
  • Hinged aluminum Binocular Viewer housing contains fully multi-coated BAK-4 prisms for high light transmission
  • Includes two high-quality 1.25" 20mm Sirius Plossl eyepieces and a hard case for safe storage and transport
  • Compatible with 1.25" telescope focusers and diagonals


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Item #  20271
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You were born with two eyes, so why not use both of 'em when stargazing with a telescope? Now you can with the Orion Binocular Viewer, and you will be pleasantly surprised at what a difference it makes. The effect is most pronounced on the planets and Moon, but even deep-sky objects seem to have more clarity and depth. And now this popular accessory comes with a thread-on 2x barlow lens, so you can choose two levels of magnification. The hinged aluminum housing contains fully multi-coated BAK-4 prisms that provide high light transmission. Individual helical focusing collars ensure a sharp focus for each eye. The viewer's 1.25" nosepiece is threaded to accept filters. This complete package includes two high-quality 1.25" 20mm Orion Sirius Plossl eyepieces, thread-on 2x Orion barlow lens and Orion case.

Warranty

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 800-676-1343.

Product Support
Visit our product support section for instruction manuals and more
In the Box
Orion 20mm Sirius Plössl Eyepieces
2x Barlow Lens
Orion hard carry case
Thumb screws
Shipping Info

Orders received by noon Pacific Time for in-stock items ship the same business day. Orders 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.

Reviews
Orion Binocular Viewer for Telescopes with Sirius Eyepieces
Rating??
4.1 / 5
4.1 / 5
Open Ratings Snapshot
Rating Breakdown 7 Reviews
5 stars
4
4 stars
2
3 stars
0
2 stars
0
1 star
1
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Ease of Use??
4 / 5
4 / 5
Value??
4 / 5
4 / 5
1 out of 1(100%)customers recommend this product.
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7
7 Tired of looking at objects with only one eye? The Orion BinoViewer with Sirius eyepieces lets you use both your eyes for more clarity when viewing the planets and moon. Includes 2x Barlow lens, two 20mm Sirius Plossl Eyepieces and a storage case.
Rating??
4.1 / 5
4.1 / 5
Open Ratings Snapshot
Rating Breakdown 7 Reviews
5 stars
4
4 stars
2
3 stars
0
2 stars
0
1 star
1
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Ease of Use??
4 / 5
4 / 5
Value??
4 / 5
4 / 5
1 out of 1(100%)customers recommend this product.
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Product reviews
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Ratings summary
Rating??
4.1 / 5
4.1 / 5
Open Ratings Snapshot
Rating Breakdown 7 Reviews
5 stars
4
4 stars
2
3 stars
0
2 stars
0
1 star
1
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Ease of Use??
4 / 5
4 / 5
Value??
4 / 5
4 / 5
1 out of 1(100%)customers recommend this product.
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Product ReviewsWrite A Review
Rating??
5 / 5
5 / 5
Orion Binocular Viewer
PostedNovember 26, 2010
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Johnny I
 
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It yook me awhile to decide to order these as the reviews before mine were mixed in that they seemed not to work in some scopes and no clear listing of the ones that di work. I decided to order them and give it a go anyway figuring the worst was I wouldhave to return them. I am very happy I did order them. It would not focus with the included two 20mm eye pieces. After adding the short doubler (2x) then they would focus very well. However for me 20mm is more Magnification especially having to use the doubler. I switched to 25mm and will order 37mm soon. Jupiter looked fantastic and Orion Nebula was exceptional. Stars in the refactor were pinpoint sharp and clear. The field of depth and detail was the best views I have had. I may never go back to monocular again. Thanks Orion! Scopes used were SkyViewpro 120MM Refractor and XT12i Dob
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Rating??
5 / 5
5 / 5
Got it working with XT8
PostedAugust 24, 2011
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otseng
 
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Owned this product for:Less than 3 mos
Optical Quality??
5 / 5
5 / 5
Mechanical Quality??
5 / 5
5 / 5
Ease of Use??
4 / 5
4 / 5
Value??
4 / 5
4 / 5
I have a XT8 Dob and when I first tried it, I could not get it to focus, even with the included 2x barlow. I eventually got it to focus by adjusting the main mirror for a shorter light path.
The binocular is heavy duty and looks to be of great construction. The downside to this is that it's fairly heavy and requires holding the tube up with one hand if you're using a dob. The viewer is able to adjust the distance between the eyepieces, so it can accommodate all viewers. And each eyepiece has a focuser to adjust for each eye.
Definitely glad I got this and will be using it a lot.
Pros: now can use two eyes to observe!
Cons: can be a bit tricky with dobs
Yes, I recommend this product!
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Rating??
5 / 5
5 / 5
Orion Bino Viewer With 10 Inch Newt.
PostedJune 2, 2009
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Gary
 
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Bought this a few months ago now. But tried for the first time a few nights ago. The test target was the Moon. Used on my 10 inch SkyWatcher reflector. Would not focus right off. Still out of focus all the way in on the rack and pinion. But then installed the included barlow and the result was WOW!!. Excellent focus range, excellent clarity, fine tune focus on each eyepiece was great without my glasses. Looking with both eyes was a true new experience. Excellent!
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4 / 5
4 / 5
An excellent value for what it offers
PostedMay 3, 2008
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Bill J
 
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I have not seen many visual observers using binos at star parties and gatherings. I always get rave reviews from novices and experienced alike, when they look through the Orion binos on my 8" SCT and gaze at the Orion Nebula or Saturn, or Jupiter, or the Moon! Nothing beats using both eyes to view the heavens. It automatically gives an expansive view, with more clarity and contrast than when viewing through one eyepiece. I had my binos out last night in my front yard, showing the neighbors Saturn. Even with a street light hitting my scope (including the binos), Saturn still looked bright and sharp in the binos, fitted with the included 20mm Plossls. Of course, Saturn is a bright object, the binos perform much better where street lights aren't hitting you. Also, when using binoviewers, objects look larger, I imagine because of the reduced eye strain. And of course the price beats having to buy Denkmeiers (a great maker of extremely high end binoviewers). For the price of the Orion binos, you get a great visual observing tool and still have funds left over to pay for gas to get out to a dark site. Dew heaters are available for binos, although not here on the Orion site. I use Dew-Not dew heaters.
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Since 1975 Orion Telescopes & Binoculars has been offering telescopes for sale direct to customers, with an unswerving commitment to best quality products, value and unmatched customer care. Our 100% satisfaction guarantee says it all.

Orion offers telescopes for every level: Beginner, Intermediate, Advanced, and Expert. From our entry level beginner telescopes for amateur astronomers to our Dobsonian telescopes to our most advanced Cassegrain telescopes and accessories, you can find the best telescope for you. And you'll enjoy discount prices by buying your telescope online, direct from Orion. Not sure how to choose a telescope? Orion's Telescope Buyer's Guide is a great place to start.

Orion binoculars are known for quality optics at a great price. We offer binoculars for every viewing interest, including astronomical binoculars, compact binoculars, waterproof binoculars, birding binoculars, sport and hunting binoculars, and even night vision binoculars.

Orion's telescope and astrophotography accessories will enhance your telescope enjoyment without breaking the bank. Expand your viewing experience with accessories ranging from moon filters to power-boosting Barlow lenses to advanced computerized telescope mounts. Capture breathtaking photos with our affordable astrophotography cameras. And when you're stargazing, Orion's telescope cases and covers, observing gear, red LED flashlights, astronomy books and star charts will make your observing sessions more convenient, comfortable and meaningful.

At Orion, we are committed to sharing our knowledge and passion for astronomy and astrophotography with the amateur astronomy community. Visit the Orion Resource Center for in-depth information on telescopes, binoculars, and astrophotography. You can find astrophotography "how to" tips and share your best astronomy pictures here. Submit astronomy articles, events, and reviews, and even become a featured Orion customer!