| PRODUCT DETAILS | | Celestron SkyMaster 20x80 Binoculars |  | |
Celestron SkyMaster 20x80 Binoculars
The SkyMaster Series of large aperture binoculars from Celestron offer phenomenal performance for astronomical viewing. They are also a great choice for terrestrial use, especially over long distances. All models feature high quality BAK-4 prisms and have multi-coatings for enhanced contrast. The 80 and 100mm models are waterproof and feature structural reinforcement of the main body for maximum stability and secure optical alignment - in addition, they have a built-in super-rigid photo tripod adapter.
Manufacturer: Celestron
Price Range: $189.95 - $332.95
 Celestron SkyMaster 20x80 Binoculars
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| User Reviews |  | Confusing product information
rating: 2
Read below - copied from the blurb above on these binoculars. These binoculars have a 4mm exit pupil
The exit pupil size -- the diameter of the objective lens divided by the magnification -- determines the amount of light available to your eye. The larger the exit pupil, the brighter the image obtained will be. A three-millimeter exit pupil is generally sufficient for daytime use, five-millimeters is suitable for daytime and twilight, and seven-millimeters is generally necessary for maximum nighttime or astronomy use.
Why do they say they're stargazing binoculars when they only have a 4mm exit pupil? They wrote just above that you need a 7mm exist pupil for astronmy.
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Celestron SkyMaster 20x80 Binoculars
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