Oberwerk BT-100XL Binocular Telescope

This product has been discontinued.

Oberwerk BT-100XL Binocular Telescope

This product has been discontinued.

The non-ED version of the BT-100XL-ED with otherwise the same features and performance, but at a much lower price.

This product has been discontinued. You may be interested in:

BT-100XL-ED Binocular Telescope
SKU: OBBT-100XL-SD-LP Category:

The BT-100XL is the non-ED version of the world’s finest and most-powerful binocular- the BT-100XL-ED. While that model’s ED objectives almost completely eliminate CA (chromatic aberration, or false-color fringing), the non-ED BT-100XL has minimal CA at magnifications as high as 80x. Other than that, you get all the features and performance of the BT-100XL-ED, at a much lower price! For all but the optical perfectionist, the BT-100XL is all the binocular you’ll need. With their lightweight magnesium alloy bodies, the XL Series sets a new standard for image quality AND portability. A binocular of this quality deserves great eyepieces, so we include our finest 70° AFOV 14mm (40x) eyepieces, which normally sell for $250/pair. These eyepieces are not threaded for use with filters, but because of the industry-standard 1.25″ helical focusers, your favorite telescope eyepieces can be used as well. With the widest IPD range of any binocular on the market (50-80mm), even small children can view through both eyepieces.
Other features include a Picatinny rail handle (for mounting a wide variety of finders or laser pointers) and extendable glare shields. Available in your choice of a speckle-finish “Big Eyes” Gray or a lustrous “Luna Pearl” White, with black-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 with either the Oberwerk 5000 head or the Manfrotto Nitrotech 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.

Additional information

Weight 30 lbs
Dimensions 29 × 15 × 12 in
Focal Length



1.75° (40x)

Exit Pupil

2.5mm (40x)

Eye Relief

18mm (40x)

Minimum Focus

25 meters

IPD Range


Product Weight

12.5 lbs.


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