Description
Celestron SkyMaster 20x80
| Magnification: | 20x |
| Objective Lens Diameter: | 80mm (3.15") |
| Focal Length of Objective Lens: | 328.6mm (12.94") |
| 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 |
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.
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