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Home Page > Product Overview > Oberwerk 45° 70mm Binocular Telescope

Oberwerk 45° 70mm Binocular Telescope

The new 45° 70mm Binocular Telescope is the smallest and least-expensive binocular telescope on the market. At just over a foot in length, it is approximately half the size of our 45° 100mm Binocular Telescope, and at 8.5 lbs, is just 1/3 of the weight. For those with limited space, or needing easy portability, this new model is a great choice. Of course it also has Oberwerk's signature broadband multi-coatings on every lens surface, including the porro prisms and triplet objectives. Retractable glare shields minimize reflections. 16x fully multi-coated wide-angle eyepieces are included, but because of the industry-standard 1.25" helical focusers, your favorite telescope eyepieces can be used as well. The BT-70-45 will provide excellent image quality up to 50x magnification.

Complete package includes binocular, removeable handle, aluminum-frame case, and a pair of 1.25" 16x oculars. Because accurate collimation is critical at higher magnifications, every Oberwerk binocular is tested and collimated at our Quality Assurance Center in Dayton, OH- so even at higher magnifications, you'll enjoy perfectly merged images.

See the full BT-70-45 review by Phil Harrington from the July 2013 issue of Astronomy Magazine.

Objective size

70mm (f/l 375mm) triplet


Your choice (any 1.25")
Includes 16x



Optic coating

Fully broadband multi-coated

Field of view

16x- 4.0°
Apparent FOV- 65°

Exit pupil diameter

16x- 4.4mm

Exit pupil distance

16x- 16mm

Inter-pupil distance range



8.5 lbs.

BT-70-45 ocular view
BT-70-45 ocular view

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