Vixen BT81S-A Binocular Telescope

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Item #VIX308-1

  • List Price:
  • $3,080.00
  • Your Price:
  • $1,999.00
  • You Save:
  • $401.00 USD36% + FREE Shipping
  • Magnesium Fluoride Coated
  • Air Space Doublet Design
  • 81mm Aperture
  • Uses standard 1.25 inch format eyepieces
  • Available as binocular only or complete with tripod and fork arm
Questions? Let our experts help!
  • Description

    Make a great view even better with Vixen's NEW BT81S-A Binocular Telescope. You will see spectacular views of comets and star clusters. The Magnesium Fluoride coated, air space doublet design, dramatically recuces chromatic aberration for magnificent views. This large aperture, 81mm binoculars, deliver crisp, clear images.


    The BT81S-A Binocular Telescope is very portable, at just 9 lbs in weight, so that it can easily be taken to all your observing locations.



    • Aperture Ratio F/5.9
    • Aperture : 81mm (3.1")
    • Focal length - 480mm.
    • Resolving Power: 1.43 arc sec.
    • Light Gathering: 134x
    • Interpupillary Distance: 2.2" to 4"
    • Mount Block: Dovetail Bar for SX/GP Tripods
    • Visual Back: 31.7 mm - Friction Fit
    • Dimensions: 18.9 x 7.4 x 6 inches
    • Features: Carry Handle, Finder Bracket
    • Weight : 9 lbs

    Supplier SKU


    Shipping Restrictions

    Only ships in contiguous USA.

  • Dimensions & Specifications

    Model Type

    With Tripod & Fork Mount and 25mm Eyepieces

    Binoculars Series

    Vixen Binocular Telescope



    Magnification Code


    Objective Lens Diameter



    Giant Binoculars



    Prism Type

    Porro Prism Binoculars

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    Default manufacturer warranty.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

Ask The Experts

Have questions about an item or need advice on selecting the right astronomy gear? Our team of telescope experts is here to help! Avid amateur astronomers themselves, they've tested products in the field and can provide personalized recommendations.

You can reach our Customer Support line at 1-800-303-5873. We're open 8 a.m. to 8 p.m. Central Time, Monday through Friday and 9 a.m. to 4 p.m. on Saturday.

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