Celestron SkyMaster Pro 20x80 Binoculars - Waterproof, BaK-4

Celestron SkyMaster Pro 20x80 Binoculars arrive as a robust, waterproof option for serious stargazers and long-distance observers, offering professional-grade optics in a portable package.

These SkyMaster Pro binoculars feature high-quality BaK-4 prisms and Fully Multi Coated (FMC) lenses that deliver bright, contrast-rich images even in low-light conditions. With a generous 80 mm objective diameter and 20x magnification, the model is optimized for astronomy and twilight observation.

Image brightness and clarity are enhanced by a 4 mm exit pupil and a twilight factor of 40, producing a brightness of 16 cd/m² that helps reveal faint celestial details. The apparent field of view is 3.2° (56 m at 1000 m), giving a useful balance between magnification and field coverage for scanning the night sky.

Built for outdoor use, the SkyMaster Pro is waterproof and includes durable construction in black and silver finishes. Eye relief of 1.55 cm and diopter compensation of ±4 ensure comfortable viewing for users who wear glasses or need fine focus adjustment.

These binoculars support tripod mounting for steady, shake-free views during long observing sessions. Adjustable interpupillary distance (from 5.6 to 7.2 cm) and a relatively compact footprint (330.2 mm × 241.3 mm × 101.6 mm) keep the instrument adaptable to different users and setups, while the weight of 2.45 kg reflects its solid, professional build.

Included accessories such as a carrying case, neck strap, cleaning cloth, and lens caps make the SkyMaster Pro ready for field use right away. The closest focusing distance is 20.2 m, consistent with its design focus on astronomy and distant observation rather than close-up terrestrial viewing.

Typical use cases include deep-sky and lunar observation, birdwatching at long range, coastal and marine surveillance, and sporting events where high magnification is required. The waterproof design and tripod compatibility also make it ideal for dedicated night-sky sessions and extended outdoor expeditions.

Key selling points: 20x magnification, 80 mm objectives, BaK-4 prisms with FMC coatings, waterproof construction, tripod mount support, and a complete accessory kit for immediate use.

• Magnification: 20x with 80 mm objective
• BaK-4 prisms and Fully Multi Coated lenses
• Waterproof, tripod-mountable and includes case and straps