The Celestron SkyMaster 20x80 Porro Binoculars are part of Celestron’s premium SkyMaster Series, offering high-performance optics ideal for astronomical and terrestrial viewing, particularly over long distances. These binoculars are a remarkable value, blending advanced optical features with practical design for an enhanced viewing experience. Key Features: 20x Magnification: High magnification level for detailed, up-close observations of distant subjects. Giant 80mm Objective Lens: The large lenses ensure maximum image brightness in low-light conditions and for long-range observation. Ultra Sharp Focus: Provides clear and detailed viewing across the entire field of view. Multi-Coated Optics: These optics enhance image sharpness and clarity, contributing to a high-quality viewing experience. Versatility: Suitable for both terrestrial (land-based) and astronomical observation. Rubber Covering: The protective rubber coating ensures a secure, non-slip grip and added durability. Easy Focusing: Equipped with a large center focus knob for quick and precise focusing adjustments. Integrated Tripod Adapter Rod: Offers ultra-stable tripod mounting for extended viewing sessions or increased stability. Long Eye Relief: Comfortable for eyeglass wearers, allowing full enjoyment of the view without discomfort. Soft Carrying Case: Included for convenient travel and safe storage of the binoculars. Limited Lifetime Warranty: Provides the best protection and product support on the market, ensuring reliability and peace of mind. Celestron has meticulously designed the larger models in the SkyMaster series, like the 20x80, to cater to the specific needs of extended astronomical or terrestrial viewing sessions. These binoculars are not only a testament to Celestron's commitment to quality but also an invitation to explore the world and the stars beyond. Specifications GENERAL 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 capsRainguardCarrying caseNeck strapLens clothInstruction 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. California Residents WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
