Vixen Astronomy Binoculars BT-81S-A

  • $1,499.95
    Unit price per 


  • Binoculars with 80 mm lens diameter
  • 31.7 mm (1 1/4 inch) eyepiece sockets for changeable eyepieces
  • Very high light intensity thanks to the large 80 mm lenses
  • Dimensions: 480 x 190 x 155 mm / weight: 4.1 kg
  • Included: binoculars, carry handle, viewfinder, dew caps


Take a look through the new Vixen BT-81S-A binoculars. You will be impressed when you use them to observe gas nebula, star clusters or comets.

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


Optical design Refractor telescope
Resolution and limiting magnitude 1.43 arc seconds, 11.3
Focal length 480 mm (f/5.9)
Type of coating Fully multi-coated
Color of coating Blue
Body material Aluminum
Adapter and connections 31.7 mm clamp
Dimensions and weight 480 x 190 x 155 mm; 4.1 kg


Vixen warranties its products to be free from initial defects in materials and workmanship for a specified period based on part type:

Vixen Electronic Parts: Limited One Year Warranty

Vixen Mechanical Parts: Limited Two Year Warranty

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CA Residents: Prop 65 WARNING(S)

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