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radio telescope

noun, Astronomy.
a system consisting of an antenna, either parabolic or dipolar, used to gather radio waves emitted by celestial sources and bring them to a receiver placed in the focus.
Origin of radio telescope
First recorded in 1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for radio telescope
Historical Examples
  • The S-Regions are invisible to the eye through an optical telescope, but are detected with ease by a radio telescope.

    Disturbing Sun Robert Shirley Richardson
  • Later messages had been picked up by radio telescope and converted to appear as symbols on the oscilloscope screen.

  • Later, the boys helped check circuits while the radio telescope swung through a variety of arcs, with Farid at the controls.

    The Egyptian Cat Mystery Harold Leland Goodwin
  • Rick turned and looked at the radio telescope at Sahara Wells, its great parabolic reflector gleaming in the brilliant moonlight.

    The Egyptian Cat Mystery Harold Leland Goodwin
British Dictionary definitions for radio telescope

radio telescope

an instrument consisting of an antenna or system of antennas connected to one or more radio receivers, used in radio astronomy to detect and analyse radio waves from space
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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radio telescope in Science
radio telescope  
An instrument that consists of a radio receiver and antenna system mounted on a wide, bowl-shaped reflector, used to detect radio-frequency emissions from astronomical objects. The reflector and receiver form a parabolic antenna; incoming radio waves are focused by the reflector onto the receiver, where the radio signals are translated into electrical signals for further processing or electronic display. Due to the long wavelengths of radio waves, the reflectors of radio telescopes must be very large to focus the waves at a good resolution. Separate reflectors are sometimes linked in fixed arrays to act as a single collector.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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