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Nikon 18x70 Astrolux XL
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$1099.98
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In time for summer, Nikon presents the 18x70IF WP WF binoculars suitable for astronomy, surveillance, navigation, and other specialized applications. Specialized binoculars for the rigorous demands of astronomy, surveillance, and navigation requires durability and wide field of view at high magnification. Also, demand for high-magnification widefield binoculars is increasing, as witnessed by the popularity of observing the HYAKUTAKE (1996) and HALE-BOPP (1997) comets. The Nikon 18x70 IF WP binoculars, featuring 18x high magnification and 72° wide apparent field of view (index of visible viewfield angle) accommodate such demands for high precision. Moreover, they are waterproof and highly reliable for use under such severe conditions as wind, rain, and night dew.
Features:
- 18x high magnification, 72° wide viewfield These binoculars are suitable for astronomy, surveillance, navigation and other professional and specialized applications.
- Long eye relief design for wearers of eyeglasses Eye relief (distance between eyepiece lenses and the eyepoint where the entire field can be viewed without vignetting) is 15.4mm long for a wide viewfield when wearing eyeglasses.
- Bright viewfield Large 70mm diameter objectives and multilayer coating applied to all lenses and prisms increase light transmittance, ensuring a bright field of view.
- Waterproof for use under such severe conditions as rain, wind, and night dew The nitrogen gas-filled body prevents the binoculars from fogging that can otherwise result when binoculars are exposed to sudden changes in temperature.
- Secure viewing Rubber ring prevents the dioptre adjustment ring from slipping when exposed to moisture and perspiration.
Specifications:
| Magnification |
18x
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| Objective diameter |
70mm
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| Angular field of view (real) |
4°
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| Angular field of view (apparent) |
72°
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| Field of view at 1,000m |
70m
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| Exit pupil |
3.9mm
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| Relative brightness |
15.2
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| Eye relief |
15.4mm
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| Close focusing distance |
81m
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| Weight (approx.) |
2,050g
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| Length |
293mm
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| Width |
234mm
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| Pupil distance |
53 to 78mm |
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