Celestron SkyMaster 18 - 40x80 Zoom Binoculars # 71021

Our Price: $169.00
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Our Product ID: B-CE-71021
Manufacturer SKU: 71021
Item Can Ship: To US / Canada Only
Celestron SkyMaster 18 - 40x80 Zoom Binoculars # 71021

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Quick Overview

  • Lower magnification (relative to discontinued # 71020 binocular) 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

Product Details

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.


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

Product carries full 2 year Celestron factory limited warranty (within US/Canada only).

Objective Lens Diameter 80mm
Magnification 18-40x
Exit Pupil 4.4mm @ 18x: 2.0mm @ 40x
Field of View (Angular) 18: 1.9°
Field of View (Linear) 18x: 96.0 ft. @ 1,000 yds. / 33.2m @ 1000m
Coatings Multi-Coated
Eye Relief 20.3 @ 18x
Case Yes
Objective Lens Cover Yes
Ocular Lens Cover Yes
Waterproof Resistant
Tripod Adaptable Yes
Weight 76oz
Warranty Limited Lifetime Warranty