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Nikon 7 x 50 ProStar, Water Proof Porro Prism Astronomy Binocular with 7.3 Degree Angle of View, U.S.A.
Mfr. Part: 8207 SKU: NK750SP
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Fujinon 7 x 50 FMT-SX Polaris, Water Proof Porro Prism Binocular with 7.0° Angle of View, U.S.A. Warranty
Price: $499.95
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Description
The 7x50 Prostar was evaluated by Astronomy Magazine's Richard Berry as the conoiseurs' astronomy binocular.
Provides a 7.1mm exit pupil, high quality lens glass and full multicoating for the ultimate in low light viewing and optical versatility.
Nikon's astronomy binoculars use durable, all-metal construction and O-ring sealed nitrogen filled tubes for waterproof, shockproof and fogproof performance, and a unique "pebbled" surface to provide ergonomic viewing.
Each of the three models utilizes top of the line, coma-corrected lenses and Nikon's exclusive Special Purpose (SP) glass for flare-free pin point image clarity. The glass is specially ground and polished to eliminate surface aberrations and provide crisp, clear resolution and the highest possible light transmission. The lenses and prisms are coated with multiple layers of Nikon's proprietary anti-reflective lens coatings to improve light transmission, enhance color rendition, and provide flare-free viewing. In each binocular, the power is designed to complement a large objective lens delivering the perfect balance of resolution and generous exit pupil.
The 7x50 Prostar measures 8.5" x 8.1" and weighs 48.3 ounces. The Nikon 7x50 Prostar has a field of view of 383' at 1,000 yards and an exit pupil of 7.1mm. It is tripod adaptable for steady, detailed observation. |
Features
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All metal construction for durability |
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Nikon's superior technology |
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BaK4 high index prisms |
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100% Waterproof/Fogproof |
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Special Performance (SP) glass |
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Individual eye focus |
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Tripod adaptable |
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High resolution, fully multicoated optics, coma corrected |
Specifications
| Type of Prism | Porro Bak4 prism |
| Coating | Fully Multi-Coated |
| Real Angular Field of View | 7.3° |
| Field of View at 1000 Yards | 383 ' |
| Exit Pupil | 7.1 mm |
| Eye Relief | 15 mm |
| Relative Brightness | 50.4 |
| Twilight Factor | 18.7 |
| Close Focus Distance (ft) | 40.4' |
| Rubber Coated (Armored) | No |
| Waterproof / Fogproof | Yes |
| Camera Tripod Adaptable | Yes w/ #7806 |
| Dimensions | L x W 8.5" x 8.4" |
| Weight | 48.3 oz. |
| Special Features | Special Performance (SP) glass |
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