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Nikon 18 x 70 Astroluxe-XL, Water Proof Porro Prism Astronomy Binocular with 3.0 Degree Angle of View, Indiviual Focus, U.S.A.
Mfr. Part: 8210 SKU: NK1870SP
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Item Includes
Case, Strap, 25-Year Limited Warranty, Lifetime $10 "No-Fault" Warranty.
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Description
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 10x70 Astroluxe and 18x70 Astroluxe XL are 12" x 9.2" and weigh 69.8 ounces. A 161' field of view at 1,000 yards and a 3.9mm exit pupil give the 18x70 Astroluxe XL a strong blend of light transmission and resolution. All three models are tripod adaptable for steady, detailed observation. |
Features
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Waterproof, Fogproof, Shockproof |
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SP Glass |
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Tripod Adaptable |
Specifications
| Type of Prism | Porro, BaK-4 prism |
| Coating | Fully Multi-Coated Lens |
| Real Angular Field of View | 3 degrees |
| Field of View at 1000 Yards | 161' |
| Exit Pupil | 3.9mm |
| Relative Brightness | 15.21 |
| Twilight Factor | 35.5 |
| Rubber Coated (Armored) | Yes |
| Waterproof / Fogproof | Yes |
| Camera Tripod Adaptable | Yes |
| Dimensions | 12" x 9.2" |
| Weight | 69.8 ounces |
| Special Features | SP glass |
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