The Nikon 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. Featuring top of the line, coma-corrected lenses and the Nikon 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 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.
- Focusing System: IF
- Magnification x: 18
- Objective Diameter (mm): 70
- Angular Field of View Real: 4.0
- Angular Field of View Apparent: 72
- FOV at 1000 yds.(ft.): 210
- Close Focus Distance (ft.): 243
- Exit Pupil (mm): 3.9
- Relative Brightness: 15.1
- Eye Relief (mm): 15.4
- Size (L&W) inches: 11.7x9.2
- Model 7447 Weight oz.: 69.8
- Weight grams.: 2100
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