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Mother of pearl opera glasses and leather case. Opera glasses with handle, ca.1910. Opera glasses, also known as theater binoculars or Galilean binoculars, are compact, low-power optical magnification devices, usually used at performance events, whose name is derived from traditional use of binoculars at opera performances.
WW1 era Galilean type binoculars. Almost from the invention of the telescope in the 17th century the advantages of mounting two of them side by side for binocular vision seems to have been explored. [1] Most early binoculars used Galilean optics; that is, they used a convex objective and a concave eyepiece lens.
Telescopes and binoculars can be used year-round to see planets, stars and meteor showers. Here are some top-rated gear for peering into space. Stargazing: A shopping guide
Find your binoculars. For an enhanced view, experts recommend that you grab a pair of binoculars that range in specifications from 7x35 to 10x50 that will allow you to have a clearer view of ...
While you don’t always need special gadgets to watch celestial events light up the sky, telescopes and binoculars allow you to get a better look at space-related phenomena. The summer is filled ...
Orion Telescopes & Binoculars was an American retail company that sold telescopes, binoculars and accessories online and in-store for astronomy and birdwatching. It was founded in 1975 and had corporate offices in Watsonville, California. [1] A large proportion of its products were manufactured by the Chinese company Synta for the Orion brand ...