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Vixen  |  SKU: ES14304

Vixen Astronomy Binoculars BT-81S-A


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Vixen Astronomy Binoculars BT-81S-A



  • 81 mm / 3.2" Aperture
  • 480 mm Focal Length
  • 45-degree Angled
  • Magnesium Fluoride Coated
  • 31.7 mm (1 1/4 inch) Eyepiece Sockets for Changeable Eyepieces
  • Very High Light Intensity
  • Dimensions: 480 x 190 x 155 mm
  • Weight: 9 lb (4.1 kg)
  • Included: Binoculars, Carry Handle, Viewfinder, Dew Caps


The Vixen 81mm BT-81S-A Astronomy Binoculars provide exceptional terrestrial and celestial observing. The twin 480mm f/5.9 achromatic refractors have permanently attached 45-degree diagonals for comfortable viewing.

This model has remarkable depth perception and contrast. They deliver impressive celestial views of the Moon's terminator, gas nebula, star clusters or comets.

The magnesium fluoride coating reduces chromatic aberration and the large aperture of 81mm ensures a razor-sharp, contrast-rich image. The BT-81S-A binocular telescope set weighs 9 lb (4.1 kg), is portable and also exceptionally suited for nature observations.


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Vixen Astronomy Binoculars BT-81S-A | ES14304 | 4955295143047

Vixen Astronomy Binoculars BT-81S-A





81 mm | 3.2"

Focal Length

480 mm

Focal Ratio


Field of View



1.43 arc seconds resolution

11.3 limiting magnitude

Fully multi-coated

45° angle of view

Barrel Size



480 x 190 x 155 mm


9 lb | 4.1 kg
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