Effelsberg

Since its inauguration in 1972, the Effelsberg 100-m radio telescope is one of the world's largest fully steerable telescopes. It operates at wavelengths from about 7 mm to 90 cm. The telescope is operated by the Max Planck Institut f?r Radioastronomie in Bonn, Germany (part of the Max-Planck-Gesellschaft). The Effelsberg 100-m telescope was involved in several such surveys, including the one, to name just one example, at 408 MHz (73 cm) by Haslam et al. (1981, 1982; Astron. and Astrophys.). For nearly 30 years it was the largest fully-steerable radio telescope in the world - until the opening of the Green Bank Telescope in Green Bank, West Virginia (USA).

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1972: 1972 was a leap year that started on a Saturday....

Radio telescope: In contrast to an "ordinary" telescope, which produces visible light images, a radio telescope "sees" radio waves emitted by radio sources, typically by means of a large parabolic ("dish") antenna, or arrays of them. The first of these was the 9m telescope constructed by Grote Reber in 1937. In the ...

Bonn: Bonn is a city in Germany (Population (2004 est): 313,605 ; the 19th largest city in Germany), in the Bundesland of North Rhine-Westphalia, located about 20 kilometres south of Cologne on the river Rhine. It was the capital of West Germany from 1949 to 1990. From 1288 to 1803 it was the residence of...