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SKU #: VXP1348

Vixen Optics Vixen BT81S-A Astronomical Binocular Telescope

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Vixen Optics Vixen BT81S-A Astronomical Binocular Telescope

Large aperture, 81mm binoculars are great for viewing the night sky or as a terrestrial binocular for making the most out of a good view. The BT81-A is portable, so that it can be taken to a dark sky location very easily. The viewer has an option of attaching any LV or LVW eyepiece to give a wide range of magnifications.


  • Optics: Multi Coated
  • Fully multicoated for maximum light transmission
  • Provide a spectacular view of comets and star clusters
  • Aperture Ratio: F11.2
  • Resolving Power: 1.45 arc seconds
  • Light Gathering: 131x
  • Real Field of View: 66 arc minutes
  • Field of View: 1.6 degrees
  • Exit Pupil: 2.2mm
  • 80mm multicoated optics


  • Overall Product Weight: 13lbs

Vixen Optics Vixen BT81S-A Astronomical Binocular Telescope

Weights & Dimensions

  • Overall Product Weight: 13lbs


Telescope Type: BinocularColor: White
Primary Material: Stainless steelAdditional Materials: glass
User Level: EnthusiastUsage: Astrophotography
Aperture Size: 80 MillimetersMagnification: 131
Focal Length: 480 MillimetersGPS Technology: No
GoTo Technology: NoFinder Scope Included: No
Tripod/Base Included: NoAccessory Tray Included: No
Portable: YesBattery Required: No
Country of Manufacture: Japan 


Assembly Required: NoAdditional Parts Required: No


Product Warranty: 5 Years 

About the Manufacturer

The Vixen Co., Ltd has manufactured the most respected line of Telescopes and Mounts in Japan since 1949, where it is the #1 selling brand. Vixen produces a varied selection of telescopes, mounts, binoculars and spotting scopes. Each product is fully inspected to meet Vixen's high standard of quality.

Vixen has created unique, high quality optical products and was the first to introduce a Go-To Mount for astronomical telescopes.

Vixen Optics Vixen BT81S-A Astronomical Binocular Telescope

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