DESCRIPTION
Unveiling the power of Vixen BT-81S-A: A stargazer's dream
Get ready for an out-of-this-world experience with the Vixen BT-81S-A astronomy binoculars! Building upon the success of its predecessor, the BT80-A, this upgraded model features a shorter focal length, resulting in a total length reduction of approximately 100 mm. Moreover, advancements in optical design have further improved image quality.
These cutting-edge binoculars will take your stargazing game to a whole new level, providing unparalleled clarity and detail as you observe gas nebulae, star clusters, and comets.
Equipped with advanced coatings, these binoculars boast exceptional optical performance, minimizing aberrations and ensuring crystal-clear views of celestial phenomena. With a substantial 81mm aperture, they offer high-contrast imagery that reveals intricate details with remarkable precision.
Despite their impressive capabilities, the BT-81S-A set remains remarkably lightweight. This portability makes them an ideal companion for both celestial and terrestrial observations, allowing you to explore the cosmos with ease.
Elevate your astronomical pursuits to new heights with the Vixen BT-81S-A astronomy binoculars. Order yours today!
Why choose the Vixen BT81S-A Astronomy Binoculars?
1. Unrivaled observations
Peer into the cosmos through the Vixen BT-81S-A astronomy binoculars for awe-inspiring views of gas nebulae, star clusters, and comets. This optical marvel promises an extraordinary stargazing experience.
2. Chromatic excellence
Equipped with a magnesium fluoride coating, these binoculars significantly reduce chromatic aberration. This means you'll enjoy crystal-clear, distortion-free views, allowing you to capture even the finest celestial details.
3. Precision engineering
With an impressive 81mm aperture, the BT-81S-A guarantees razor-sharp, high-contrast images. Revel in the beauty of the cosmos with unparalleled clarity, immersing yourself in the breathtaking expanse of the universe.
4. Portable performance
Weighing just 9.04 lbs, this binocular telescope set is highly portable, making it an ideal companion for both stargazing adventures and nature observations. Its versatility ensures you can enjoy celestial wonders and explore the natural world with equal ease.
5. Advanced specifications
Boasting features like multi-coated 2-lens achromat objective lenses, a focal length of 480mm (f/5.9), and a resolution of 1.43 arc seconds, the Vixen BT-81S-A excels in performance. With a light-gathering power of 134×, it's a powerful tool for any aspiring astronomer or nature enthusiast.
What's in the box?
- Vixen BT81S-A Astronomy Binoculars with 80 mm lens diameter ×1
- Carry handle ×1
- Viewfinder ×1
- Dew caps ×2
SPECS
Optical Parameters
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Binoculars type: Giant Binoculars
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Optical design: Air-spaced doublet achromatic
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Mirror/Lens diam.: 81mm
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Focal length: 480mm
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Focal ratio: f/5.9
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Magnification zoom max.: 50×
- Angular resolution: 1.43 arcsecs
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Visual limiting magnitude: 11.3
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Light gathering power: 134× unaided eye
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Optical coating: single coating with magnesium fluoride
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Color of coating: blue
Hardware Parameters
- Dimensions: 18.9"×7.48"×6.1" / 480×190×155mm
- Weight: 9.04 lbs / 4.1 kg
- Body material: Aluminum
Eyepiece Section
- Eyepiece holders: Friction fit type
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Eyepiece barrel diameter: 31.7mm
*Note: For observing, two 31.7mm (1.25-inch) eyepieces of the same focal length are required as they are not included.
Other Features
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Accessories: Carry handle, Viewfinder, Dew caps
- Photography: No
- Solar observation: Not available
CA Residents: Prop 65 WARNING(S)
DOWNLOADS
Download Manual for Vixen BT81S-A Binoculars (English)
