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refractor
(Encyclopedia)refractor: see telescope.Coudé focus
(Encyclopedia)Coudé focus: see telescope.equatorial mounting
(Encyclopedia)equatorial mounting: see telescope. ...Newtonian focus
(Encyclopedia)Newtonian focus: see telescope.Cassegrain focus
(Encyclopedia)Cassegrain focus: see telescope. ...resolving power
(Encyclopedia)resolving power: see telescope.Pulkovo
(Encyclopedia)Pulkovo po͞olˈkəvə [key], astronomical observatory, S of St. Petersburg, NW Russia. Pulkovo was built (1834–39) under a commission headed by F. G. W. von Struve. In 1839 its 15-in. (38-cm) refra...Space Infrared Telescope Facility
(Encyclopedia)Space Infrared Telescope Facility: see observatory, orbiting. ...transit instrument
(Encyclopedia)transit instrument or transit, telescope devised to observe stars as they cross the meridian and used for determining time. Its viewing tube swings on a rigid horizontal axis restricting its movements...observatory
(Encyclopedia)observatory, scientific facility especially equipped to detect and record naturally occurring scientific phenomena. Although geological and meteorological observatories exist, the term is generally ap...Browse by Subject
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