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8×42 roof prism binoculars with rainguard and opened tethered lens caps. Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.
David Pearsall Bushnell (1913–2005) was an American entrepreneur who founded the Bushnell optics company in 1948. Bushnell made precision binoculars affordable to middle-class Americans for the first time through a strategy of importing from manufacturers who provided optics to his patented specifications.
Binoculars: Bushnell sells a wide variety of binoculars and was awarded the Best Buy award from Outdoor Life magazine in 2005 for their Browning Sports Optics binoculars and in 2006 for their Legend binoculars. [22] [23] Microscopes; Telescopes: Bushnell made smaller amateur optical telescopes. Some popular models include the "ARES 5", and the ...
The binoculars series was updated and modified several times throughout its production history and switched to Schmidt-Pechan roof prism systems around 1990, which also brought a new series onto the market. These binoculars, which have been on the market for high-quality compact binoculars for a long time, had the optical parameters 8×20 and ...
E. A. Bushnell (1872–1939), American newspaper cartoonist; Emily Bushnell (born 1950), Tufts University professor of psychology; Geoffrey Bushnell (1903–1978), British archaeologist; George E. Bushnell (1887–1965), member of the Michigan Supreme Court from 1934 to 1955; Horace Bushnell (1802–1876), American Congregational minister and ...
The limiting magnitude for naked eye visibility refers to the faintest stars that can be seen with the unaided eye near the zenith on clear moonless nights. The quantity is most often used as an overall indicator of sky brightness, in that light polluted and humid areas generally have brighter limiting magnitudes than remote desert or high altitude areas.
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