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The Nikon 7x50 ProStar Waterproof & Fogproof Porro Prism Binocular is a very bright astronomical binocular which, unlike higher-powered models which must be mounted on a tripod, may be comfortably hand held. Not normally considered for astronomical observation, a binocular with a large objective such as the ProStar will actually reveal large open star clusters and big, extended nebulae.
| Prism Type | Porro |
| Magnification | 7x |
| Objective Lens Diameter | 50 mm |
| Angle of View | 7.3° |
| Minimum Focus Distance | 80.38' / 24.5 m |
| Exit Pupil Diameter | 7.1 mm |
| Eye Relief | 15 mm |
| Interpupillary Adjustment | 56 - 72 mm / 2.20 - 2.83" |
| Focus Type | Individual |
| Dimensions (WxHxD) | 8.27 x 2.80 x 8.54" / 210 x 71 x 217 mm |
| Weight | 3.00 lb / 1.36 kg |
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Comments about Nikon 7x50 ProStar Binocular:
I use this to look at the moon and the stars, wildlife and who's doin' wheelies in the parking lot across the street. The binoculars bring everything in closer. Next time, I will get an even more powerful pair, which would then move my purchase from Japan to Germany.
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