Celestron Binocular Skymaster 20x80
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Celestron’s SkyMaster Series of large aperture binoculars are a phenomenal value for high performance binoculars ideal for astronomical viewing or for terrestrial (land) use – especially over long distances. Each SkyMaster model features high quality BaK-4 prisms and multi-coated optics for enhanced contrast. Celestron has designed and engineered the larger SkyMaster models to meet the special demands of extended astronomical or terrestrial viewing sessions.
| Specification | Details |
|---|---|
| Magnification | 20x |
| Objective Lens Diameter | 80mm (3.15″) |
| Angular Field of View | 3.7° |
| Linear Field of View (@1000 yds / @1000 m) | 195 ft (65 m) |
| Exit Pupil | 4mm (.15″) |
| Eye Relief | 18mm (.71″) |
| Close Focus | 108 ft (33 m) |
| Interpupillary Distance (max) | 72mm (2.83″) |
| Interpupillary Distance (min) | 56mm (2.20″) |
| Diopter Adjustment Range | -4 to +8 |
| Twilight Factor | 40 |
| Relative Brightness | 16 |
| Limiting Stellar Magnitude | Ideal: 12.02 | Moderate: 11.02 | Poor: 10.02 |
| Lens Coatings | Multi-Coated |
| Prism Glass (Type) | BaK-4 |
| Prism Coatings | N/A |
| Weight | 75 oz (2126 g) |
| Environmental Protection | Water Resistant |
| Nitrogen Filled | No |
| Tripod Adaptable | Yes |
| Carrying Case | Nylon |
| Dimensions | 228mm x 120mm x 325mm (9.0″ x 4.7″ x 12.8″) |
| Included Items |
Objective lens caps, Rainguard, Carrying case, Neck strap, Lens cloth, Instruction manual |
