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User Manual for Vixen Optics 25x81 BT81S-A Astronomical Binocular Click to enlarge the picture
Contents of the user manual for the Vixen Optics 25x81 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 25x81 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 The 25x81 BT81S-A Astronomical Binocular from Vixen Optics is an astronomical observation binocular with interchangeable eyepieces providing 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, in a package 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 complete with two NPL Plossl 25mm eyepieces. The eyepieces are fully multicoated with pop-up eyecups. A full size, stable and sturdy aluminum Vixen Optics HAL130-SX tripod is included as is a swing arm and fork mount presenting a full astronomical package ready to peruse the celestial seas. - Twin 480 mm f/5.9 achromatic refractor telescopes with 45° incorporated erect image diagonals
- Interpupillary distance adjustment range of 2.2-4.0"
- Built-in carry handle and finder bracket
- Dovetail bar mount block for SX/GP tripods
- Accepts multiple 1.25" eyepieces
- Visual back 31.7 mm - friction fit
UPC: 811971015692 In the Box Vixen Optics 25x81 BT81S-A Astronomical Binocular 2 x NPL Plossl 25mm Eyepiece (1.25") HAL130-SX Aluminum Tripod Swing Arm Fork Mount Limited Lifetime Warranty (Transferable) Summer Binocular Buying Guide Christopher Witt 07/14/2016 bzbbfafzydcqddaayvytzyasxwdfxrcrzw A Guide to Marine Binoculars Todd Vorenkamp 06/25/2015 Pentax Sport Optics Binocular Roundup Joseph Albanese 06/24/2015 bzbbfafzydcqddaayvytzyasxwdfxrcrzw A Guide to Birding with Binoculars Todd Vorenkamp 06/16/2015 Table of Contents
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Technical parametersVixen Optics BT81S-A Specs | Magnification | 25 x | | Objective Lens Diameter | 81 mm | | Angle of View | 2.0° (Actual) | | Field of View | 105.0' @ 1000 yd / 35.0 m @ 1000 m | | Exit Pupil Diameter | 3.24 mm | | Eye Relief | 19.5 mm | | Interpupillary Adjustment | 8.7 to 15.7 mm / 22 to 40" | | Dioptric Correction | None | | Focus Type | Individual | | Tripod Mount | Yes (Adapter Included) | | 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 | | | | Package Weight | 1.0 lb | | Box Dimensions (LxWxH) | 39.0 x 19.0 x 8.5" |
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