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User Manual for Vixen Optics 81mm BT81S-A Astronomical Binocular - OTA Click to enlarge the picture
Contents of the user manual for the Vixen Optics 81mm BT81S-A Astronomical Binocular
- Product category: Binoculars Vixen Optics
- Brand: Vixen Optics
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Vixen Optics Binoculars
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User manual for the Vixen Optics 81mm BT81S-A Astronomical Binocular contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Vixen Optics product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Vixen Optics user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Vixen Optics product will considerably shorten its lifespan!
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Product description The B&H Binocular Buying Guide Read More abxxwvtdtqzdutcwdqvqfrrzzzbfyaetr The 81mm BT81S-A Astronomical Binocular - OTA from Vixen Optics is an astronomical observation binocular allowing interchangeable eyepieces that provides exceptional terrestrial or celestial observing. The twin 480mm f/5.9 achromatic refractors have permanently attached 45° diagonals. They accept the entire lineup of Vixen NPL Plossl eyepieces and have an enormous 56-101mm interpupillary adjustment range to work with nearly any set of eyes, including many children's. For remarkable depth perception and contrast, there is nothing that beats the ease and comfort of erect image binocular viewing. Expect high quality observing of terrestrial vistas and celestial views alike which is easily transported to your favorite dark sky location out and beyond. Take a drive to nowhere on a clear, new moon lit night and be awe struck! The Pleiades and the Moon's terminator never looked like this. This permutation of the BT81S-A arrives with the binocular optical tube assembly (OTA) only. Eyepieces, mount and a tripod or base need to be supplied by the user. - Accepts multiple 1.25" eyepieces
- Visual back 31.7 mm - friction fit
- Built-in carry handle and finder bracket
- Mount block dovetail bar for SX/GP tripods
- Interpupillary distance adjustment range of 2.2-4.0"
- Resolving power of 1.43 arc seconds and light gathering value of 134x
- Twin 480mm f/5.9 achromatic refractor telescopes with 45° incorporated erect image diagonals
In the Box Vixen Optics 81mm BT81S-A Astronomical Binocular - OTA Mount Block Limited Lifetime Warranty (Transferable) Summer Binocular Buying Guide Christopher Witt 07/14/2016 A Guide to Marine Binoculars Todd Vorenkamp 06/25/2015 Pentax Sport Optics Binocular Roundup Joseph Albanese 06/24/2015 A Guide to Birding with Binoculars Todd Vorenkamp 06/16/2015 Table of Contents
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Technical parametersVixen Optics BT81S-A Specs | Objective Lens Diameter | 81 mm | | Interpupillary Adjustment | 8.7 to 15.7 mm / 0.3 to .6" | | Dioptric Correction | None | | Focus Type | Individual | | Tripod Mount | None | | Dimensions | 18.9 x 7.4 x 6.0" / 48.0 x 18.8 x 15.2 cm | | Weight | 9.0 lb / 4.1 kg optical assembly only |
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