Celestron Skymaster 18-40X80mm Zoom
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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
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.
Specifications
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")
In The Box
Objective lens caps
Rainguard
Carrying case
Neck strap
Lens cloth
Instruction manual
