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Oberwerk 20x65 ED Deluxe

Specifications: Objective diameter:  65 mm Magnification:  20 x Exit pupil: 3.25 mm Eye relief (acc. to spec): 18 mm Usable eye relief (mesured from folded eyecup): 11.5 mm True aperture: 65mm (acc. to spec.) IPD:  56 - 74 mm RFOV:…

Oberwerk BT-82XL-ED

Specifications: Objective diameter: 82 mm Focal length: 450mm Focal ratio: f/5.5 Effective aperture: 80mm (acc. to spec.) IPD: 50 - 80 mm Focus type: IF Waterproof: splashproof Weight (measured w/o eyepieces, with eyepiece covers and…

Oberwerk BT-100XL-ED

Specifications: Focal length:  560 mm Objective diameter: 100mm Effective aperture:  96 mm (acc. to spec) IPD: 50 - 80 mm Focus type: IF Focal ratio: f/5.6 Waterproof: splashproof Weight (measured, w/o eyepieces, with eyepiece cover…