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Unfortunately Oberwerk 45° 100mm Astronomy Binoculars Telescope is no longer carried by OpticsPlanet. You can also explore other items in the Binoculars category yourself to try and find the perfect replacement for you!

This model of Oberwerk Binoculars has been discontinued and is no longer available. However, we offer other excellent models of Binoculars on our site at great price.

Oberwerk 45° 100mm Astronomy Binoculars Telescope Product Info

The highly-acclaimed Oberwerk 45° 100mm Astronomy Binocular Telescope 100BT45 is now improved in two very important ways for those whose primary interest is binocular astronomy - 45° oculars and a strong and smooth fork mount, which together provide comfortable viewing from horizon to zenith. Of course the new 45° 100 mm Oberwerk Giant Binoculars also has Oberwerk 's signature broadband multi-coatings on every lens surface, including the massive porro prisms. 25x 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 rest of the astronomy binocular, including the semi-apochromatic triplet objectives, is the same proven design as found in the original Oberwerk 25/40x100mm Binoculars. Complete package price includes binocular, removable handle, aluminum case, wooden tripod with fork mount, and 25x oculars. 7x50mm correct-image finderscope (as shown) is optional. Binocular is pre-tapped for the finderscope's precision-ground dovetail base (no adjustment required- just lock it in and it's aligned). Because accurate collimation is critical at higher magnifications, every Oberwerk binocular is collimated prior to shipping- so even at 100x, you'll enjoy perfectly merged images

Available options of Oberwerk 45° 100mm Astronomy Binoculars Telescope:

  • 100BT45: Oberwerk 45deg 100mm Astronomy Binoculars Telescope

Specifications for Oberwerk 45° 100mm Astronomy Binocular:

Objective size:   100mm
Magnification:   Your choice (any 1.25"). Ships with 25x pair
Prism:   BAK4
Optic coating:   Fully Broadband. Multi-coated including prisms and oculars
Field of view:   25x- 2.5°. Apparent FOV- ~65°
Exit pupil diameter:   25x- 4mm
Exit pupil distance (eye relief):   25x- 16mm
IPD (inter-pupil distance) range:   58-80mm
Weight:   26 lbs, fork 10 lbs., tripod 14 lbs.

Features of Oberwerk 45° 100mm Binocular Telescope:

  • Highest-quality BAK4 prisms, which give the best performance across the entire field of view
  • Quality multi-coatings that maximize the amount of light that passes through a lens
  • OBERWERK™ "slow" focusers with precise adjustment
  • Easily-accessible collimation set-screws that allow easy adjustment of image alignment
  • 1-Year Warranty

Package Contents:

  • Oberwerk 45° 100mm Binocular Telescope OBBT-100-45
  • removable handle
  • aluminum hard case with wheels and retractable handle
  • wooden tripod with fork mount
  • 25x oculars
  • Finderscope

Oberwerk 45° 100mm Astronomy Binoculars Telescope Related Products

Oberwerk 45° 100mm Astronomy Binoculars Telescope Unorderable Models

Factory DEMO Oberwerk 45 100mm Astronomy Binoculars 100bt45, MPN: 100BT45-DEMO, UPC: 100BT45-DEMO, Code: OW-BI-100BT45-DEMO
Oberwerk 45deg 100mm Astronomy Binoculars Telescope 100BT45, MPN: OBBT-100-45, UPC: 854951002251, Code: OW-BI-100BT45-EE

Oberwerk 45° 100mm Astronomy Binoculars Telescope Comments

Customer Reviews
Helpful Positive Review Star Gazers Delight by Legacy Reviewer, October 15, 2009
This is a great binocular for the price in its stock form. You will need the crank-up type tripod for stargazing above 45 degrees and some additional power in the oculars for planetary observations. The fork mount is good for its intended purpose b...
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