CELESTRON SkyMaster 15x70 Binoculars

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. Features: - 15x magnification porro prism binocular - Large 70 mm objective lens offers maximum image brightness in low-light and long-range conditions - Ultra sharp focus across the field of view - Multi-Coated optics for sharp, clear views - Suitable for terrestrial or astronomical viewing - Protective rubber covering for ultra-firm grip - Large center focus knob for easy focusing - Tripod adapter included - Long eye relief ideal for eyeglass wearers - Carrying case included for travel and safe storage Specifications: - Magnification: 15x - Objective Lens Diameter: 70mm (2.75´´) - Focal Length of Objective Lens: 279.63mm (11´´) - Angular Field of View: 4.4° - Linear Field of View (@1000 yds) / @1000 m): 231 ft (77 m) - Exit Pupil: 4.7mm (.18´´) - Eye Relief: 18mm (.71´´) - Close Focus: 43 ft (13 m) - Interpupillary Distance (max): 72mm (2.83´´) - Interpupillary Distance (min): 56mm (2.20´´) - Diopter Adjustment Range: -4 to +8 - Twilight Factor: 32.4 - Relative Brightness: 22.09 - Limiting Stellar Magnitude: Ideal: 11.73 | Moderate: 10.73 | Poor: 9.73 - Lens Coatings: Multi-Coated - Prism Glass (Type): BaK-4 - Weight: 48 oz (1361 g) - Environmental Protection: Water Resistant - Tripod Adaptable: Yes - Carrying Case: Nylon - Dimensions: 220mm x 110mm x 280mm (8.7´´ x 4.3´´ x 11.0´´) Included: - Tripod Adapter - Objective Lens Caps - Rainguard - Neck Strap - Lens Cloth - Instruction Manual Solar Warning: - Never look directly at the Sun with the naked eye or with this optic. Permanent and irreversible eye damage may result. - Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. - Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.