Difference between revisions 1272078 and 1272396 on enwikiversity

[[Image:Brorfelde Schmidt Telescope.jpg|thumb|right|200px|The Schmidt Telescope at the former Brorfelde Observatory is now used by amateur astronomers. Credit: [[commons:User:Moeng|Mogens Engelund]].]]
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A '''radiation telescope''' is an instrument designed to collect and focus radiation so as to make distant sources appear nearer.
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[[Image:Arecibo Observatory Aerial View.jpg|thumb|left|200px|The Arecibo Radio Telescope, Arecibo, Puerto Rico, at 1000 feet (305 m) across, is the largest dish antenna in the world. Credit: H. Schweiker/WIYN and NOAO/AURA/NSF, NOAA.]]
[[Image:Evpatori.jpg|thumb|200px|left|The image is of the Evpatoria RT-70 radar telescope in the Ukraine. Credit: Bebo.]]

[[Image:TerraSAR-X and TanDEM-X.jpg|thumb|right|200px|In this artist's impression TerraSAR-X and TanDEM-X are in orbit. Credit: Astrium GmbH.]]
The image at right shows planetary radar telescopes at [[w:Pluton (complex)|Pluton]], USSR, in 1960.

The "Arecibo Observatory in Puerto Rico [is] the world's largest, and most sensitive, single-dish radio telescope."<ref name=Brand>{{ cite web
| author=David Brand
| title=Astrophysicist Robert Brown, leader in telescope development, named to head NAIC and its main facility, Arecibo Observatory
| publisher=Cornell University
| date=21 January 2003
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