Celestron SkyMaster 20x80 Binoculars
by Celestron
(Click here)
Customers in the UK,
buy this product at amazon.co.uk
for British Pounds
Digital Photo Product Details
Manufacturer: CelestronModel: 71018
Product features:
- Multi-coated optics for a clear view
- Water-resistant body
- High-quality BAK-4 prisms
- Large aperture perfect for low light conditions and stargazing
- Features integrated tripod adapter rod
- Orion Paragon-Plus XHD - Tripod
- LensPEN Lens Cleaning System
- Celestron Heavy-Duty Altazimuth Tripod
- Adorama Lens Cleaning Tissue, Three Packages.
- Adorama Blower Brush - Small
Digital Cameras Photo Reviews of Celestron SkyMaster 20x80 Binoculars
Customer Review: Confusing product information
Summary: 2 Stars
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.
Description of 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.When it's time to gaze at the stars or take in some long-distance or low-light terrain viewing, look no further than the Celestron 71018 SkyMaster 20 x 80 binoculars. Featuring high quality BAK-4 prisms, multi-coated optics for enhanced contrast, a diopter adjustment for fine focusing, and large apertures, these binoculars offer phenomenal performance.
The Celestron 71018 features a 20x magnification and an objective lens diameter of 80 millimeters, giving it a 4-millimeter 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.) The Celestron 71018 also includes an integrated tripod adapter rod, a deluxe padded soft carrying case, and Celestron's No Fault Limited Lifetime Warranty.
What's in the Box
Celestron 71018 Binoculars and deluxe padded soft carrying case
Medium Magnification (8x to 11x)
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