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Encyclopedia > National Radio Astronomy Observatory

The National Radio Astronomy Observatory (NRAO) is an institution set up by the United States government for the purpose of radio astronomy. NRAO designs, builds, and operates its own high-power radio telescopes for use by scientists around the world. Radio astronomy - Wikipedia /**/ @import /skins-1. ... The Parkes 64 metre radio telescope in New South Wales, Australia (the bigger of the two shown) In contrast to an ordinary telescope, which produces visible light images, a radio telescope sees radio waves emitted by radio sources, typically by means of a large parabolic (dish) antenna, or arrays of...

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Locations

Charlottesville, Virginia

Headquarters. Located on the University of Virginia campus. Charlottesville is an independent city located within the confines of Albemarle County in the state of Virginia. ... The University of Virginia (also referred to as UVa and often called simply Virginia for short) is a research university in Charlottesville, Virginia. ...


Green Bank, West Virginia

Enlarge
Green Bank Telescope: the largest fully steerable single dish in the world, 100 x 110 m.

NRAO is the constructor/owner of the worlds largest fully mobile radio telescope, the Green Bank Telescope, which resides in Green Bank, West Virginia. Green Bank is also the home of NRAO's prinicipal observatory as it is the center of a United States national radio quiet zone, which NRAO is also responsible for maintaining. It resides on a 13,000 square mile piece of land void of electromagnetic pollution. The land was set aside by the FCC in 1958, as a Radio Quiet Zone; the area closest to the telescope is free of fixed radio transmitters, and all other fixed radio transmitters (TV and radio towers) inside the zone are required to transmit away from the telescope, often at limited power. It is hard to keep the site free of radio pollution. To aid in limiting outside interference, the surrounding area is planted with pines characterized by needles of a certain length as to 'block' electromagnetic interference at the wavelengths used by the observatory. At one point, the observatory faced the problem of North American flying squirrels tagged with US Fish & Wildlife Service telemetry transmitters. Also things like electric fences and other radio wave emitters have caused great trouble for the astronomers in Green Bank. The observatory contains many other notable telescopes, including three 85 foot telescopes forming an interferometer array, a 40 foot telescope used by school groups and organizations for small scale research, a fixed radio 'horn' built to observe Cygnus X-1, a bunk house to facilitate these guests, as well as a reproduction of the original Jansky antenna built by Karl Jansky while he worked for Bell Labs to detect the interference that was discovered to be previously unknown natural radio waves emitted by the universe. Categories: US geography stubs | Cities in West Virginia | Pocahontas County, West Virginia ... Image File history File links Download high resolution version (2048x1536, 1056 KB)Picture of the GBT taken by the Grosse Pointe North Radio Astronomy Team in Green Bank West Virgina. ... Image File history File links Download high resolution version (2048x1536, 1056 KB)Picture of the GBT taken by the Grosse Pointe North Radio Astronomy Team in Green Bank West Virgina. ... The Parkes 64 metre radio telescope in New South Wales, Australia (the bigger of the two shown) In contrast to an ordinary telescope, which produces visible light images, a radio telescope sees radio waves emitted by radio sources, typically by means of a large parabolic (dish) antenna, or arrays of... Green Bank Telescope: the largest fully steerable single dish in the world, 100 x 110 m. ... The United States National Radio Quiet Zone is a large area of land surrounding the National Radio Astronomy Observatory (NRAO) near Green Bank, West Virginia. ... The USFWS logo The United States Fish and Wildlife Service is a unit of the United States Department of the Interior that is dedicated to managing and preserving wildlife. ... Horn may refer to: horn (anatomy), a hollow, pointed projection of the skin of various animals Horn, Austria horn (diacritic), a diacritic mark used to indicate that a normally rounded vowel such as o or u is to be pronounced unrounded horn (instrument) horn, a slang term for any wind... Location of the X-ray source Cygnus X-1, which is widely accepted to be a 10 solar mass black hole orbiting a blue giant star. ... In radio astronomy, the flux unit or jansky (abbreviation Jy) is a non-SI unit of electromagnetic flux equivalent to watts per square metre per hertz. ... Interference of two circular waves - Wavelength (decreasing bottom to top) and Wave centers distance (increasing to the right). ... Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna. ...


Socorro, New Mexico

VLA: a 27-dish interferometer
VLA: a 27-dish interferometer

The NRAO's facility in Socorro is the Array Operations Center (AOC). Located on the New Mexico Tech campus, the AOC serves as the headquarters for the Very Large Array (VLA), which was the setting for the movie Contact, and the control center for the Very Long Baseline Array (VLBA). VLBA telescopes are located throughout the world. Socorro is a city located in Socorro County, New Mexico in the Rio Grande Valley, at an elevation of 4579 feet. ... Very Large Array at Socorro, New Mexico, USA. Photo taken by Hajor, 08. ... Very Large Array at Socorro, New Mexico, USA. Photo taken by Hajor, 08. ... New Mexico Institute of Mining and Technology (Also called New Mexico Tech), is a research university located in Socorro, New Mexico. ... The NRAOs Very Large Array (configuration D) For other uses of the acronym VLA see VLA (disambiguation) The Very Large Array (VLA) is a radio astronomy observatory located on the Plains of San Agustin, between the towns of Magdalena and Datil, some fifty miles (80 km) west of Socorro... Contact DVD Contact is a 1997 film adaptation of the science fiction novel Contact by Carl Sagan. ... Categories: Stub | Radio telescopes ...


Tucson, Arizona

Offices are located on the University of Arizona campus. Formerly operated the 12 meter telescope on Kitt Peak. NRAO suspended operations at this telescope and funding was rerouted to the Atacama Large Millimeter Array (ALMA) instead. The University of Arizona's Steward Observatory now operates the 12 meter telescope. Congress Street, the main thoroughfare in downtown Tucson, Arizona. ... The University of Arizona is an institution of higher learning located in Tucson, Arizona. ... The metre is the basic unit of length in the International System of Units (SI: Système International dUnités). ... The Kitt Peak National Observatory (KPNO) is located on a 6,875 ft peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono Oodham Nation, 55 miles southwest of Tucson. ... Alma my refer to: ALMA, Atacama Large Millimeter Array, an array of radio telescopes in Chile. ... The University of Arizona is an institution of higher learning located in Tucson, Arizona. ... Steward Observatorys main office is located on the University of Arizona campus. ...


Santiago, Chile

The Atacama Large Millimeter Array (ALMA) site in Chile is at 5000 m altitude near Cerro Chajnantor in northern Chile. This is about 40 km east of the historic village of San Pedro de Atacama, 130 km southeast of the mining town of Calama, and about 275 km ENE of the coastal port of Antofagasta. Santiagos Metropolitan Cathedral Santiago (officially in Spanish Santiago de Chile) is Chiles capital and largest city. ... Alma my refer to: ALMA, Atacama Large Millimeter Array, an array of radio telescopes in Chile. ... San Pedro de Atacama is a pre-Inca town in northern Chile, and a popular tourist destination. ... For the copper-mining company named after the region, see Antofagasta plc. ...


External link

  • NRAO National Radio Astronomy Observatory


 

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