BT-127XL-SD Binocular Telescope


Out of Stock

BT-127XL-SD Binocular Telescope


Accepting pre-orders beginning May 11th. Anticipated delivery is early June.

Out of Stock


Our newest and largest XL Series Binocular Telescope features 5″ apochromatic (FCD100 / FK-61 triplet) objectives, with a relatively-short 650mm focal length. The BT-127XL-SD was designed to be the highest-performing production binocular on the market, without regard to cost. Even with two 5″ triplet objectives and massive prisms, magnesium-alloy construction makes it remarkably-lightweight at just 25 lbs. With its unmatched image quality, we think it’s a much more practical alternative to the world’s largest 150mm binoculars, which are very heavy, very expensive, and difficult to mount. Finished in iridescent “Luna Pearl” White with silver anodized trim, it’s also quite attractive. Mount it on the gorgeous Oberwerk TR3 hardwood tripod, with the matching silver-anodized Oberwerk XL fork mount, and you’ll have the ultimate instrument for binocular astronomy.
The BT-127-XL-SD includes our premium 30x (22mm) 70° AFOV eyepieces. 46x (14mm) and 93x (7mm) are also available. The included heavy-duty case has wheels on one side for easy transport.

Additional information

Weight 50 lbs
Dimensions 30 × 15 × 15 in
Focal Length



2.35° (30x)

Exit Pupil

5.3mm (30x)

Eye Relief

18mm (30x)

Minimum Focus

25 meters

IPD Range


Product Weight

25 lbs.


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