Radio telescope
hideA radio telescope is a form of directional radio antenna used in radio astronomy and in tracking and collecting data from satellites and space probes. In their astronomical role they differ from optical telescopes in that they operate in the radio frequency portion of the electromagnetic spectrum where they can detect and collect data on radio sources. Radio telescopes are typically large parabolic ("dish") antenna used singularly or in an array. Radio observatories are located far from major centers of population in order to avoid electromagnetic interference (EMI) from radio, TV, radar, and other EMI emitting devices. This is similar to the locating of optical telescopes to avoid light pollution, with the difference being that radio observatories will be placed in valleys to further shield them from EMI as opposed to clear air mountain tops for optical observatories.
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News tagged with radio telescopes
SETI@home completes a decade of ET search
Space & Earth / Space Exploration
May 01, 2009 |
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The SETI@home project, which has involved the worldwide public in a search for radio-wave evidence of life outside Earth, marks its 10th anniversary on May 17, 2009.
The cosmos is green: Researchers catch nature in the act of 'recycling' a star (w/Animations)
May 21, 2009 |
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(PhysOrg.com) -- For the first time, researchers have observed a singular cosmic act of rebirth: the transformation of an ordinary, slow-rotating pulsar into a superfast millisecond pulsar with an almost infinitely ...
Fermi Large Area Telescope reveals pulsing gamma-ray sources
Sep 09, 2009 |
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Scientists at the Naval Research Laboratory (NRL) Space Science Division and a team of international researchers have positively identified cosmic sources of gamma-ray emissions through the discovery of 16 ...
Precise Radio-Telescope Measurements Advance Frontier Gravitational Physics
Sep 01, 2009 |
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(PhysOrg.com) -- Scientists using a continent-wide array of radio telescopes have made an extremely precise measurement of the curvature of space caused by the Sun's gravity, and their technique promises a ...
Radio-astronomers form telescope the size of Earth
Jan 13, 2009 |
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(PhysOrg.com) -- Radio telescopes around the world will join forces this week to carry out a unique observation of three quasars, distant galaxies powered by super-massive black holes at their cores.
Network creates virtual super-telescope
Jun 08, 2009 |
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Vast quantities of data are transferred in real time from telescopes around the world to a supercomputer in the Netherlands, where European researchers combine the information to create high-resolution images ...
Star-birth myth 'busted' (w/ Podcast)
Aug 25, 2009 |
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(PhysOrg.com) -- An international team of researchers has debunked one of astronomy's long held beliefs about how stars are formed, using a set of galaxies found with CSIRO’s Parkes radio telescope.
Close-up movie shows hidden details in the birth of super-suns (w/ Video)
Nov 16, 2009 |
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(PhysOrg.com) -- The constellation of Orion is a hotbed of massive star formation, most prominently in the Great Nebula that sits in Orion's sword. The glowing gas of the Nebula is powered by a group of young ...
Radio telescopes extend astronomy's best 'yardstick'
Jun 08, 2009 |
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Radio astronomers have directly measured the distance to a faraway galaxy, providing a valuable "yardstick" for calibrating large astronomical distances and demonstrating a vital method that could help determine the elusive ...
Astronomers seek to explore the cosmic Dark Ages
Oct 15, 2009 |
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No place seems safe from the prying eyes of inquisitive astronomers. They've traced the evolution of the universe back to the "Big Bang," the theoretical birth of the cosmos 13.7 billion years ago, but there's still a long ...
Super Planetary Nebulae
Aug 14, 2009 |
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(PhysOrg.com) -- A team of scientists in Australia and the United States, led by Associate Professor Miroslav Filipović from the University of Western Sydney, have discovered a new class of object which ...
Blast from the Past Gives Clues About Early Universe
Oct 28, 2009 |
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(PhysOrg.com) -- Astronomers using the National Science Foundation's Very Large Array (VLA) radio telescope have gained tantalizing insights into the nature of the most distant object ever observed in the ...
Scientists make first discovery using revolutionary long wavelength demonstrator array
Aug 18, 2009 |
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Scientists from NRL's Space Science and Remote Sensing Divisions, in collaboration with researchers from the University of New Mexico and the National Radio Astronomy Observatory located in Socorro, N.M., ...
VLBA locates superenergetic bursts near giant black hole
Jul 02, 2009 |
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(PhysOrg.com) -- Using a worldwide combination of diverse telescopes, astronomers have discovered that a giant galaxy's bursts of very high energy gamma rays are coming from a region very close to the supermassive ...
Allen Telescope Array begins all-sky surveys
May 28, 2009 |
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(PhysOrg.com) -- With commissioning of the 42 radio dishes of the Allen Telescope Array (ATA) nearly complete, UC Berkeley astronomers are now embarking on several major radio astronomy projects, including daily surveys of ...
