Celestron SKYMASTER 20x80 astronomical Binoculars
 
Celestron SKYMASTER 20x80 astronomical 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.   For maximum stability and secure optical alignment, the 80mm and 100mm SkyMaster models feature enhanced structural reinforcement to the main binocular body. As an additional convenience, the 80mm and 100mm SkyMaster models also include an integral super rigid photo tripod adapter. The SkyMaster Series binoculars are built to provide years of magnificent views of the world around you and the heavens above.       
 
  OVERVIEW 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. The 20x80 version is one of the most popular models in the series. It offers serious large aperture light gathering in an affordable and reasonably lightweight configuration.     20x magnification porro prism binocular Large 80 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   Objective Lens Diameter (mm) 80 mm 
Magnification (x) 20x 
Angular Field of View 3.7° 
Exit Pupil (mm) 4 mm
 Eye Relief (mm) 18 mm 
Close Focus  108 ft (33 m) 
Optical Coatings Multi-Coated 
Weight (oz) 75 oz (2126 g) Prism Glass (Type) BaK-4 
Twilight Factor 40 Relative Brightness 16 
Weatherproof Water Resistant