Arecibo Observatory

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Arecibo Observatory,

radio-astronomyradio astronomy,
study of celestial bodies by means of the electromagnetic radio frequency waves they emit and absorb naturally. Radio Telescopes

Radio waves emanating from celestial bodies are received by specially constructed antennas, called radio telescopes,
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 facility located near Arecibo, Puerto Rico, that includes one of the world's largest single-dish radio telescopes, part of the National Astronomy and Ionosphere Center. Conceived by, designed by, and built under the supervision of William E. Gordon, it was completed in 1963 and is now operated by SRI International and its partners under contract with the U.S. National Science Foundation. The principal instrument, the William E. Gordon Telescope, is a fixed antenna of spherical section, 1,000 ft (305 m) in diameter, that is built into a natural limestone bowl. Although the antenna is too large and heavy to be moved, it can be pointed as much as 20° from the zenith by moving the line feeds to the antenna's focus. As a result of the resurfacing of the antenna, which was completed in 1974, observations are possible up to a frequency of 4,000 MHz. A 100-ft (30-m) satellite antenna can be used in conjunction with the large antenna for interferometer observations. In addition there is a wide range of instrumentation for measuring ionospheric conditions. Principal research programs include studies of radio emissions from many types of objects, especially the cores of supernovas called pulsars; radar studies of comets and asteroids; and ionospheric studies.
References in periodicals archive ?
the Observatory's director and a principal scientist at SRI International, which leads a multi-organization team that manages, operates, and maintains the Arecibo Observatory.
Outside the city there are mountain ranges, rainforests, excellent beaches and the Arecibo Observatory, the world's largest radio telescope, which scans the universe for signs of life (it's open to visitors).
The impending study does not mean the complex will close entirely--at least not immediately, said Richard Barvainis, program manager of the National Astronomy and Ionosphere Center, which includes the Arecibo observatory, operated by Cornell University.
SETI is a scientific effort to determine if there is intelligent life outside Earth, primarily by using the Arecibo Observatory radio telescope in Puerto Rico to detect artificial radio signals coming from other stars.
Radar signals beamed from the Arecibo Observatory in Puerto Rico penetrated to depths of 20ft -but found no sign of thick layers of ice.
On the island's northern coast, the Arecibo Observatory is a huge radio telescope whose 20-acre dish is built into a natural geological feature.
Home to the largest radio/telescope in the world at the Arecibo Observatory.
Anyone interested in the project can participate by downloading a free program that analyzes data collected by the world's largest radio telescope, at Arecibo Observatory in Puerto Rico.
Arecibo Observatory at the end of Highway 625, operates the world's largest and most sensitive radio/radar telescope that gathers radio emissions from quasars, pulsars and galaxies at the farthest reaches of the universe.
Tucked away in a natural depression in the northern mountains of Puerto Rico is the Arecibo Observatory, the world's largest radio-radar telescope, part of the National Astronomy and Ionosphere Center.
The cruise's next stop is Puerto Rico, and you could go to where some of the scenes of the Bond film GoldenEye were filmed, at Arecibo Observatory.
Sonic murmurs and bleeps are being collected by astronomers scouring the skies with the world's largest telescope at the Arecibo Observatory in Puerto Rico.