BT-70XL-ED Binocular Telescope


BT-70XL-ED Binocular Telescope

(1 customer review)


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The BT-70XL-ED is the smallest member of the XL Series family and is the least-expensive ED binocular telescope on the market. With 70mm FK-61 ED objectives, 24mm of clear prism aperture, and a lightweight magnesium alloy body (waterproof and nitrogen-filled), this binocular telescope sets a new standard for image quality AND portability. A binocular of this quality deserves great eyepieces, so we include our finest 1.25″ 70° AFOV 14mm (28x) eyepieces. The ED objectives will deliver chromatic aberration-free views up to 56x magnification (7mm eyepieces). With the widest IPD range of any binocular on the market (50-80mm), even small children can view through both eyepieces.
The handle is actually a Picatinny rail, which can be used to directly mount a wide variety of finders or laser pointers. Not only are the XL Series the highest-quality binocular telescopes at anywhere near their relatively-low prices, they are also quite attractive! Available in your choice of a speckle-finish “Big Eyes” Gray or a lustrous “Luna Pearl” White, both featuring red-anodized trim. Our exclusive heavy-duty aluminum-frame case is included. Recommended mounts include the Oberwerk 5000 tripod/head, or the Oberwerk TR3 hardwood tripod with carbon-fiber elevator and Oberwerk 5000 head. Every Oberwerk binocular is tuned to perfection prior to shipping- so even at extreme magnifications, you’ll enjoy perfectly merged images.
3-year Limited Warranty.
XL Series Options and Accessories

Additional information

Weight 26 lbs
Dimensions 26 × 15 × 12 in
Focal Length



2.5° (28x)

Exit Pupil

2.5mm (28x)

Eye Relief

18mm (28x)

Minimum Focus

25 meters

IPD Range


Product Weight

8.5 lbs.

1 review for BT-70XL-ED Binocular Telescope

  1. Lorie Clairmont (verified owner)

    I was amazed by the quality of this binocular telescope. The images are clear and it came tuned to perfection right out of the case. I was pleasantly surprised when I could see the rings on Saturn. The clarity is incredible and it totally surpassed my expectations. I have seen Mars, Jupiter, Venus, Saturn, the orange corn Moon,and watched a falling star all through this great binocular. I definitely recommend this binocular telescope. It is the best of the best!!!

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