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Effelsberg 100-m Radio Telescope
The Effelsberg 100-m Radio Telescope is a radio telescope in the Ahrgebirge (part of the Eifel) in Bad Münstereifel, district of Euskirchen, North Rhine-Westphalia, Germany. For 29 years the Effelsberg Radio Telescope was the largest fully steerable radio telescope on Earth. In 2000 it was surpassed by the Robert C. Byrd Green Bank Telescope in Green Bank, West Virginia with an elliptical 100 by 110-metre aperture.〔(Newly Commissioned Green Bank Telescope Bags New Pulsars ), NRAO, 2002-01-04〕
== Geography ==
The telescope is located about 1.3 km northeast of the village of Effelsberg, a southeastern part of the town of Bad Münstereifel. It is placed less than 300 m west of the 398 m high Hünerberg, which is already in the neighbouring Land of Rhineland-Palatinate.
In the vicinity of the telescope, the boundary of the Land of North Rhine-Westphalia is the Effelsberger Bach, which runs only a few metres east of the telescope. The Effelsberger Bach is 6.5 km long, flowing from the Effelsberger Wald into the Sahrbach, which in turn flows south and into the Ahr river.
A hiking path leads past the telescope; in 2004 part of this was turned into a planet trail with information panels about the Solar System with its planets. The trail ends at the 39 cm model of the Sun next to the visitor centre.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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