Celestron SkyMaster 18-40X80 Zoom - Binocular

The Celestron 71021 SkyMaster 18-40X80 Zoom binocular can be used for terrestrial or astronomical viewing - it's large, powerful and fun to use. This large aperture binoculars are a phenomenal value for high performance binoculars. It has a fully multi-coated optics for enhanced contrast and its BaK4 prisms provide good light transmission, excellent sharpness and clarity. It comes with a diopter adjustment for fine focusing.

This binocular is water-resistant and has an adaptor allowing it to be fitted to a standard tripod fitting. Celestron has designed and engineered the larger SkyMaster models to meet the special demands of extended astronomical or terrestrial viewing sessions. Long eye relief ideal for eyeglass wearers and a carrying case included for travel and safe storage.

71021 Features:

• Multi-Coated Optics
  -for Sharp, Clear Views
• High-Quality BaK4 Prisms
• 18x-40x Zoom Magnification
• Large 80 mm Objective Lens
  - Offers Maximum Image Brightness in Low-light & Long-range Conditions
• Ultra Sharp Focus Across The Field of View
• Suitable for Terrestrial or Astronomical Viewing
• Large Aperture
  - Perfect for Low Light Conditions & Stargazing
• Diopter Adjustment for Fine Focusing
• Long Eye Relief Ideal for Eyeglass Wearers
• Water Resistant
• SKU : 71021

Specifications:

• Objective Lens Diameter (mm) : 80 mm
• Magnification (x) : 18-40x
• Angular Field of View : 18: 1.9°
• Linear Field of View : 18x: 96.0 ft. @ 1,000 yds. / 33.2m @ 1000m
• Close Focus Distance : 18x: 106.2 ft. / 32.4m
• Exit Pupil (mm) : 4.4 @ 18x: 2.0 @ 40x
• Eye Relief (mm) : 20.3 @ 18x
• Optical Coatings : Multi-Coated
• Weight (oz) : 76 oz (2155 g)
• Prism Glass (Type) : BaK-4
• Twilight Factor : 44.72
• Relative Brightness : 10.24
• Weatherproof : Water Resistant
• Tripod Adaptable : Yes

Includes:

• Strap
• Carrying Case
• Tripod Adapter
• Lens Caps