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Encyclopedia > Very Large Array
Very Large Array
Organization: National Radio Astronomy Observatory [1]
Location: Socorro, New Mexico, USA
Coordinates: 34°04′43.497″N, 107°37′03.819″W
Altitude: 2124 m (6970 ft)
Wavelength: radio
Diameter: 27 x 25m
Angular resolution: 0.05 to 700 arcsec

The Very Large Array (VLA) is a radio astronomy observatory located on the Plains of San Augustin, between the towns of Magdalena and Datil, some fifty miles (80 km) west of Socorro, New Mexico, USA. U.S. Route 60 passes through the complex. The VLA stands at an altitude of 6970 ft (2124 m) above sea level. It is a component of the National Radio Astronomy Observatory (NRAO). Image File history File links Question_book-3. ... Very Large Array at Socorro, New Mexico, USA. Photo taken by Hajor, 08. ... The National Radio Astronomy Observatory (NRAO) is an institution set up by the United States government for the purpose of radio astronomy. ... Socorro is a city located in Socorro County, New Mexico in the Rio Grande Valley, at an elevation of 4579 feet. ... For other uses, see Wavelength (disambiguation). ... The Very Large Array, a radio interferometer in New Mexico, USA Radio astronomy is a subfield of astronomy that studies celestial objects in the radio frequency portion of the electromagnetic spectrum. ... This article is about scientific observatories. ... This article belongs in one or more categories. ... Magdalena is a village in Socorro County, New Mexico, USA. As of the 2000 census, the village had a total population of 913. ... Datil is a town in Catron County, New Mexico, United States. ... Socorro is a city located in Socorro County, New Mexico in the Rio Grande Valley, at an elevation of 4579 feet. ... Capital Santa Fe Largest city Albuquerque Largest metro area Albuquerque metropolitan area Area  Ranked 5th  - Total 121,665 sq mi (315,194 km²)  - Width 342 miles (550 km)  - Length 370 miles (595 km)  - % water 0. ... U.S. Route 60 is an east-west United States highway, running 2,670 miles (4,300 km) from Virginia to Arizona. ... The National Radio Astronomy Observatory (NRAO) is an institution set up by the United States government for the purpose of radio astronomy. ...

Contents

Characteristics

The observatory consists of 27 independent radio antennae, each of which has a dish diameter of 25 meters (82 feet) and weighs 209 metric tonnes (230 tons). A yagi antenna Most simply, an antenna is an electronic component designed to send or receive radio waves. ... A tonne (also called metric ton) is a non-SI unit of mass, accepted for use with SI, defined as: 1 tonne = 103 kg (= 106 g). ... The short ton is a unit of mass equal to 907. ...


The antennas are arrayed along the three arms of a Y-shape (each of which measures 21 km/13 miles long). Using the railroad tracks that follow each of these arms – and that, at one point, intersect with U.S. Route 60 at a level crossing – and a specially designed lifting locomotive, the antennas can be physically relocated to a number of prepared positions, allowing aperture synthesis interferometry with a maximum baseline of 36 km (22.3 miles): essentially, the array acts like a single antenna with that diameter. The smallest angular resolution that can be reached is about 0.05 arcseconds at a wavelength of 7 mm. U.S. Route 60 is an east-west United States highway, running 2,670 miles (4,300 km) from Virginia to Arizona. ... Aperture synthesis is a type of interferometry that mixes signals from a collection instruments to produce measurements having the same angular resolution as an instrument the size of the entire collection. ... It has been suggested that Optical interferometry be merged into this article or section. ... A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. ... For other uses, see Wavelength (disambiguation). ...

Detail of one dish.

There are four commonly used configurations, designated A (the largest) through D (the tightest, when all the dishes are within 600 m of the center point). The observatory normally cycles through all the various possible configurations (including several hybrids) every 16 months; the antennas are moved every three to four months. Moves to smaller configurations are done in two stages, first shortening the east and west arms and later shortening the north arm. This allows for a short period of improved imaging of extremely northerly or southerly sources. File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...


The Array Operations Center (AOC) for the VLA is located on the campus of New Mexico Tech in Socorro. The AOC also currently serves as the control center for the Very Long Baseline Array (VLBA), a VLBI array of ten 25-meter dishes located from Hawaii in the west to the U.S. Virgin Islands in the east that constitutes the world's largest dedicated, full-time astronomical instrument. New Mexico Institute of Mining and Technology (also called New Mexico Tech, Tech, The Tech, and originally known as the New Mexico School of Mines) is a research university located in Socorro, New Mexico, USA. Renowned for its undergraduate and graduate educational opportunities[1], Tech offers over 30 bachelor of... VLBA locations. ... Very Long Baseline Interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy, in which the data received at each antenna in the array is paired with timing information, usually from a local atomic clock, and then stored for later analysis on magnetic tape or hard disk. ... Official language(s) English, Hawaiian Capital Honolulu Largest city Honolulu Area  Ranked 43rd  - Total 10,931 sq mi (29,311 km²)  - Width n/a miles (n/a km)  - Length 1,522 miles (2,450 km)  - % water 41. ...


Key science

The VLA is a multi-purpose instrument designed to allow investigations of many astronomical topics. Objects that are commonly studied include radio galaxies, quasars, pulsars, supernova remnants, gamma ray bursts, radio-emitting stars, the sun and planets, astrophysical masers, black holes, and the hydrogen gas that comprises a large portion of the Milky Way galaxy as well as external galaxies. In 1989 the VLA was used to receive radio communications from the Voyager 2 spacecraft as it flew by Neptune. An active galaxy is a galaxy where a significant fraction of the energy output is not emitted by the normal components of a galaxy: stars, dust and interstellar gas. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... It has been suggested that Radio pulsar be merged into this article or section. ... For other uses, see Supernova (disambiguation). ... The image above shows the optical afterglow of gamma ray burst GRB-990123 taken on January 23, 1999. ... This article is about the astronomical object. ... Sol redirects here. ... This article is about the astronomical term. ... An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. ... For other uses, see Black hole (disambiguation). ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... For other uses, see Milky Way (disambiguation). ... Trajectory Voyager 2 is an unmanned interplanetary spacecraft, launched on August 20, 1977. ... For other uses, see Neptune (disambiguation). ...


Past and future

Antenna Assembly Building at VLA
Antenna Assembly Building at VLA

Congressional approval for the VLA project was given in August 1972, and construction began some six months later. The first antenna was put into place in September 1975 and the complex was formally inaugurated in 1980, after a total investment of USD $78.5 million. Image File history File links Download high resolution version (909x682, 141 KB)Antenna Assembly Building at the NRAO Very Large Array, 80 km west of Socorro, New Mexico, U.S.A. Tracks for moving the dish antennas are visible in the foreground. ... Image File history File links Download high resolution version (909x682, 141 KB)Antenna Assembly Building at the NRAO Very Large Array, 80 km west of Socorro, New Mexico, U.S.A. Tracks for moving the dish antennas are visible in the foreground. ... Type Bicameral Houses Senate House of Representatives President of the Senate President pro tempore Dick Cheney, (R) since January 20, 2001 Robert C. Byrd, (D) since January 4, 2007 Speaker of the House Nancy Pelosi, (D) since January 4, 2007 Members 535 plus 4 Delegates and 1 Resident Commissioner Political... USD redirects here. ...


With a view to upgrading the venerable 1970s technology with which the VLA was built, recent funding has been allocated for the conversion of the VLA into the Expanded Very Large Array ("EVLA"). The upgrade will enhance the instrument's sensitivity, frequency range, and resolution, and will install new hardware at the San Augustin site. A second phase of this upgrade to add up to eight additional dishes in other parts of the state of New Mexico, up to 300 km away, is currently unfunded.


Pop culture

The VLA is the setting of the beginning of the1982 film 2010: The Year We Make Contact. (The novel 2010: Odyssey Two, from which the film was made, set this scene at the radio telescope at the Arecibo Observatory in Puerto Rico.) Very Large Array (VLA) Socorro, New Mexico, USA Photo taken by Hajor, 08. ... Very Large Array (VLA) Socorro, New Mexico, USA Photo taken by Hajor, 08. ... (Redirected from 2010: The Year We Make Contact) 2010: Odyssey Two, is a science fiction novel by Arthur C. Clarke (January 1982) and also a motion picture (1984) by Peter Hyams entitled simply 2010, or sometimes 2010: The Year We Make Contact. ... 2010: Odyssey Two, is a science fiction novel by Arthur C. Clarke (January 1982) and also a motion picture (1984) by Peter Hyams entitled simply 2010, or sometimes 2010: The Year We Make Contact. ... The Arecibo Observatory is located approximately 9 miles south-southwest from Arecibo, Puerto Rico (near the extreme southwestern corner of Arecibo pueblo). ...


The VLA also featured prominently in Carl Sagan's science documentary Cosmos and 1985 novel/film Contact, albeit expanded to 131 dishes and renamed the "Argus Array." When the time came for Hollywood to make the motion picture version (Contact, 1997), much of the outdoor footage was shot at the VLA site. The number of dishes visible on screen was artificially increased by means of CGI, however, and the canyon depicted as being in the vicinity of the VLA is actually Canyon de Chelly in neighboring Arizona. Insert non-formatted text here Carl Edward Sagan (November 9, 1934 – December 20, 1996) was an American astronomer and astrobiologist and a highly successful popularizer of astronomy, astrophysics, and other natural sciences. ... Cosmos: A Personal Voyage was the name of a thirteen part television series produced by Carl Sagan and Ann Druyan which was first broadcast by the Public Broadcasting Service in 1980. ... Contact is a science fiction novel written by Carl Sagan and published in 1985. ... For other uses see film (disambiguation) Film refers to the celluliod media on which movies are printed Film — also called movies, the cinema, the silver screen, moving pictures, photoplays, picture shows, flicks, or motion pictures, — is a field that encompasses motion pictures as an art form or as... Contact DVD Contact is a 1997 film adaptation of the science fiction novel Contact by Carl Sagan. ... Computer-generated imagery (commonly abbreviated as CGI) is the application of the field of computer graphics (or more specifically, 3D computer graphics) to special effects in films, television programs, commercials, simulators and simulation generally, and printed media. ... Canyon de Chelly National Monument, established April 1, 1931 as a unit of the National Park Service, is located in northeastern Arizona, within the boundaries of the Navajo Nation. ... Official language(s) English Spoken language(s) English 74. ...


In the 1996 film Independence Day the alien invaders were initially detected by SETI at the VLA. Independence Day (also known as its promotional abbreviation ID4) is an Academy Award winning science fiction film directed by Roland Emmerich. ... This article is about the search for extra-terrestrial intelligence. ...


New Jersey rock band Bon Jovi shot the music video for "Everyday", at the VLA. This was the first single and music video from the band's Island Records album, Bounce, released on October 8, 2002 in the U.S. Bon Jovi is a hard rock band originating from Sayreville, New Jersey. ... Everyday is a song by American rock band Bon Jovi. ... Island Records is a record label that was founded by British record producers in Jamaica. ... Bon Jovis 8th studio album and tenth album, Bounce was released in October of 2002. ...


The cover for the Dire Straits album On The Night features the VLA. This article does not cite any references or sources. ... On the Night is the third live album by Dire Straits. ...


The VLA can be visited in Auto Assault, a massively multiplayer online game set in post-apocalyptic America. Auto Assault is a massively multiplayer online game, developed by NetDevil and published by NCsoft. ... “MMO” redirects here. ...


Matt Harding can be seen dancing at Very Large Array in his second video. Matthew Matt (Mathias) Harding (born September 27, 1976) is an American video game developer and Internet celebrity known as Dancing Matt for his viral videos that show him dancing in front of landmarks and street scenes in various international locations. ...


Visiting

The VLA site is open to visitors year round during daylight hours. A visitor center houses a museum and a gift shop. A self-guided walking tour is available, as the visitor center is not staffed continuously. Visitors unfamiliar with the area are warned that there is little food onsite, or in the sparsely populated surroundings; those unfamiliar with the high desert are warned that the weather is quite variable, and can remain cold into April. Very Large Array (VLA) Socorro, New Mexico, USA Photo taken by Hajor, 08. ... Very Large Array (VLA) Socorro, New Mexico, USA Photo taken by Hajor, 08. ...


See also

Very Long Baseline Interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy, in which the data received at each antenna in the array is paired with timing information, usually from a local atomic clock, and then stored for later analysis on magnetic tape or hard disk. ... See also List of observatories Radio telescopes A more complete list of radio telescopes can be found by looking at the radio telescopes category External links AstroSurf. ... The Very Small Array is a 14-element interferometer perched at an elevation of 3000 metres on Tenerife in the Canary Islands. ... The WOW! Signal Credit: The Ohio State University Radio Observatory and the North American AstroPhysical Observatory (NAAPO). ... This article is about the search for extra-terrestrial intelligence. ... Keith Tyson (born August 23, 1969) is an English artist. ... Magdalena Ridge Observatory (MRO) is an astronomical observatory in Socorro County, New Mexico about 30 miles (48 kilometers) west of the town of Socorro. ... Interferometry is the applied science of combining two or more input points of a particular data type, such as optical measurements, to form a greater picture based on the combination of the two sources. ... New Mexico Institute of Mining and Technology (Also called New Mexico Tech), is a research university located in Socorro, New Mexico. ...

External links


  Results from FactBites:
 
Very Large Array - Wikipedia, the free encyclopedia (617 words)
The Very Large Array (VLA) is a radio astronomy observatory located on the Plains of San Augustin, between the towns of Magdalena and Datil, some fifty miles (80 km) west of Socorro, New Mexico, USA.
The VLA site also currently serves as the control center for the Very Long Baseline Array (VLBA), a VLBI array of ten 25-meter dishes located from Hawaii in the west to the U.S. Virgin Islands in the east that constitutes the world's largest dedicated, full-time astronomical instrument.
The number of dishes visible on screen was artificially increased by means of computer-generated imagery, however, and the canyon depicted as being in the vicinity of the VLA is actually Canyon de Chelly in neighboring Arizona.
The Very Large Array (2430 words)
Among the predecessors that led to the development of the VLA were: the first radio telescope, the first modern parabolic radio telescope, the largest equatorially mounted telescope, the three-element interferometer, and the 12-meter telescope, the Owens Valley interferometer, and the Cambridge Array.
These first arrays showed that most of the radio emission from radio galaxies and quasars was emitted many thousands of light years outside of their parent galaxies, from regions which contained no stars and emitted no visible.
Preliminary designs of this instrument, the Very Large Array (VLA), were studied in the 1960's, and a telescope array was built at the NRAO facility in Green Bank, West Virginia to test the technical designs.
  More results at FactBites »


 

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