Celestron 20x80 SkyMaster Pro ED Binoculars
Far simpler to use than a telescope, the Celestron 20x80 SkyMaster Pro ED Binoculars are made for astronomy and offer an easy way to explore the night sky. They're also an alternative to a spotting scope daytime terrestrial glassing, with good magnifying power and oversize objective lenses for a bright image. Extra-low dispersion glass and multiple layers of antireflective XLT coating combine to produce high-contrast views with accurate color fidelity. Binoculars of this size and magnifying power require stable support, so the SkyMaster Pro ED can be mounted on a tripod with an optional adapter. Special eyepiece threads allow the use of 1.25" astronomical filters to improve your viewing experience.
Optical Performance
* 20x magnification
* 80mm objective lenses
* Extra-low dispersion lenses for edge-to-edge sharpness with no chromatic aberration
* Widely spaced objective lenses of the BAK4 Porro prism optical design provide an enhanced 3-D view
* Proprietary XLT fully multicoated optics increase light transmission for bright, high-contrast images
Use and Handling
* 1.25" threads on eyepieces for astronomical filters
* ±3 dioptric correction
* 2.2 to 2.8" interpupillary adjustment range
* Twist-up eyecups for comfortable use with or without eyewear
Construction Details
* Lightweight chassis with rubber armor that protects against impacts and provides slip-resistant grip
* Nitrogen filled to prevent internal fogging
* IPX7 waterproof performance
* Tripod adaptable, adapter sold separately

Prism Type    Porro (BAK4)
Magnification    20x
Objective Lens Diameter    80 mm
Angle of View    3.4° (Actual)
Field of View    178' @ 1000 yd / 59.1 m @ 1000 m
Exit Pupil Diameter    4 mm
* Performance
Magnification    20x
Objective Lens Diameter    80 mm
Angle of View    3.4° (Actual)
Field of View    178' @ 1000 yd / 59.1 m @ 1000 m
Minimum Focus Distance    98.4' / 30 m
Exit Pupil Diameter    4 mm
Eye Relief    15.4 mm
Interpupillary Adjustment    56 to 72 mm / 2.2 to 2.8"
Diopter Adjustment    -3 to +3
Focus Type    Center
Features
Fogproof    Yes, Nitrogen Filled
Environmental Resistance    Water-Resistant (IPX7)
General
Dimensions    13.2 x 9.1 x 3.7" / 33.5 x 23.1 x 9.4 cm
Weight    7.6 lb / 3.4 kg
Packaging Info
Package Weight    10.13 lb
Box Dimensions (LxWxH)    19.4 x 13.8 x 6.9"