40X Zoom Astronomy Binoculars
40X Zoom Astronomy Binoculars are the large aperture binoculars designed for viewing the Earth and the skies above.
• High-quality, long-distance binoculars
• Zooms from 18X to 40X
• 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
• Includes lens caps, carrying case, rain guard, lens cloth and neck strap
• Attaches to any standard tripod for extra stability (tripod not included)
• Objective lens diameter: 3.15″
• 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. @18x
• Interpupillary distance (max): 2.83″
• Interpupillary distance (min): 2.2″
• Diopter adjustment range: -4 to +10
• Twilight factor: 44.72
• Relative brightness: 10.24
• Water resistant
WARNING: Never look directly at the sun with the naked eye or with this product, as permanent and irreversible eye damage may result.























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