telescopes
31Grand Interferometre a 2 Telescopes — The Grand Interferometre a 2 Telescopes is an Optical Interferometer, on Plateau du Calern, Departement Fresnel, Observatoire de la Côte d Azur, France. The observatory was closed in 2006. Fact|date=February 2007 External links * [http://www.obs… …
32Some important radio telescopes — ▪ Table Some important radio telescopes name diameter of dish (metres) short wavelength limit (cm) location Filled aperture telescopes Arecibo Observatory 305 6 Arecibo, P.R. Green Bank Telescope 110 x 100 0.3 Green Bank, W.Va., U.S. Effelsberg… …
33Some important ground-based optical telescopes — ▪ Table Some important ground based optical telescopes name aperture (metres) type observatory location date observations began Gran Telescopio Canarias 10.4 reflector Roque de los Muchachos Observatory La Palma, Canary Islands, Spain 2007 Keck I …
34Orion Telescopes & Binoculars — Rechtsform Gründung 1975 Sitz Watsonville (CA), USA Branche Optische Industrie Website …
35List of largest optical refracting telescopes — Here is a list of the largest optical refracting telescopes sorted by lens diameter and focal length. The largest refractor ever constructed was the Great Paris Exhibition Telescope of 1900. The largest practical functioning refracting telescope… …
36Vixen (telescopes) — Vixen is a Japanese company that makes telescopes, binoculars, spotting scopes and accessories for their products.They have created two unusual varieties of catadioptric telescopes both with open tube design, rather than the usual… …
37GoTo (telescopes) — In amateur astronomy, GoTo refers to a type of telescope mount and related software which can automatically point a telescope to astronomical objects that the user selects. Both axis of a GoTo mount are motor driven and are controlled by either a …
38telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
39History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… …
40Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… …
