Effelsberg radio telescope, near Bonn, Germany

Effelsberg radio telescope, near Bonn, Germany

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Caption: Effelsberg telescope. Dish of the Effelsberg tele- scope, the world's largest fully-steerable radio telescope. The dish has a diameter of 100 metres (m) & an area of 7850 square metres. It can detect wavelengths as short as 3.5 millimetres. The dish reflects and focuses incoming radio waves onto the receiving antenna above its centre. The dish is divided into 4 areas of different design. Up to a radius of 30 m it is an aluminium honeycomb sandwich. From 30 to 42.5 m radius it is an aluminium plate (perforated in the outer 2.5 m). The outermost 7.5 m is a stainless steel mesh. Photographed at the Max-Planck Institute for Radioastronomy site near Bonn, Germany, in 1997.

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Keywords: astronomy, astrophysics, effelsberg, effelsberg radio telescope, largest steer, observatory, radio telescope

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