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SkyMaster 18-40x80mm Zoom Porro Binoculars

SkyMaster 18-40x80mm Zoom Porro Binoculars

Item #: 71021

Out of stock

  • Lower magnification allows the user to locate a subject more easily and then zoom in for a close-up view
  • Multi-coated optics enhances sharpness of detail and crispness of color
  • High quality BaK-4 prisms provide higher light transmission for better viewing in low light conditions
  • Large objective diameter provides a comfortable viewing aperture at high magnification levels
  • Long eye relief for more comfortable for all users; essential for those wearing eyeglasses while viewing
  • Diopter adjustment allows for refinement of image to correct for any differences in strength between the users own eyes
  • Tripod adapter included to mount the binocular on a tripod for prolonged viewing sessions or simply for increased stability while observing
  • Limited Lifetime Warranty

Specifications

General
Magnification: 18-40x
Objective Lens Diameter: 80mm (3.15")
Focal Length of Objective Lens: 328.6mm (12.94")
Angular Field of View: 18: 1.9°
Linear Field of View (@1000 yds) / @1000 m): 96 ft (33.2 m) @18x
Exit Pupil: 4.4 @18x / 2.0 @40x
Eye Relief: 20.3 @18x
Close Focus: 106.2 ft (32.4 m) @18x
Interpupillary Distance (max): 72mm (2.83")
Interpupillary Distance (min): 56mm (2.20")
Diopter Adjustment Range: -4 to +10
Twilight Factor: 44.72
Relative Brightness: 10.24
Limiting Stellar Magnitude: Ideal: 12.01
Moderate: 11.01
Poor: 10.01
Lens Coatings: Multi-Coated
Prism Glass (Type): BaK-4
Prism Coatings: N/A
Weight: 76 oz (2155 g)
Environmental Protection: Water Resistant
Nitrogen Filled: No
Tripod Adaptable: Yes
Carrying Case: Nylon
Dimensions: 228mm x 120mm x 355mm (9.0" x 4.7"x 14.0")
Included Items: Objective lens caps
Rainguard
Carrying case
Neck strap
Lens cloth
Instruction manual
Additional Information
California Prop 65 California Prop 65 Warning

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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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. SkyMaster models feature 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.

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