Product Review
The SkyMaster model features high quality BAK-4 prisms and multi-coated optics for enhanced contrast. Celestron has designed and engineered the larger SkyMaster models to meet the special demands of extended astronomical or terrestrial viewing sessions.
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 71007 also features a 12x magnification and an objective lens diameter of 60 millimeters, giving it a 5-millimeter exit pupil.
The exit pupil size is the diameter of the objective lens divided by the magnification which 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.
It offers serious large aperture light gathering in a somewhat lightweight configuration, protective rubber covering for ultra-firm grip, large center focus know for easy focusing, and a tripod adapter is also included.
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