Expanded Specifications Celestron 20X80 Skymaster Porro Prism Binoculars
Magnification: | 20x |
Objective Lens Diameter: | 80mm (3.15") |
Focal Length of Objective Lens: | TBD |
Angular Field of View: | 3.4° |
Linear Field of View (@1000 yds) / @1000 m): | 178 ft (59 m) |
Exit Pupil: | 4.0mm (.16") |
Eye Relief: | 15.4mm (.61") |
Close Focus: | 98.4 ft (30 m) |
Interpupillary Distance (max): | 72mm (2.83") |
Interpupillary Distance (min): | 56mm (2.20") |
Diopter Adjustment Range: | ±3 |
Twilight Factor | 40 |
Relative Brightness: | 16 |
Limiting Stellar Magnitude: | Ideal: 12.02 | Moderate: 11.02 | Poor: 10.02 |
Lens Coatings: | Fully Multi-Coated - XLT Coatings |
Prism Glass (Type): | BaK-4 |
Prism Coatings: | N/A |
Weight: | 123.2 oz (3,492g) |
Environmental Protection: | Waterproof (IPX7) |
Nitrogen Filled: | Yes |
Tripod Adaptable: | Yes |
Carrying Case: | Deluxe Nylon |
Dimensions: | 335mm x 230mm x 94mm (13.2" x 9.1" x 3.7") |
Included Items: | Binoculars Objective lens caps Eyepiece Covers Rainguard Neck strap Lens cloth Non-Silica Dessicant Case Instruction manual |