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the remnants of Tycho's supernova that had exploded 11 November 1572. Two major overhauls installed a new surface in 1970 to correct for maintenance, snow damage, and warping from its sheer size; then a new, bigger project building was constructed in 1972 that incorporated a Farady cage around the control room itself. The telescope stood at 240 ft in height, weighed 600 tons, had a 2-minute arc accuracy, and had a surface accuracy of ~1 inch. The collapse in 1988 was found to be due to unanticipated stresses which cracked a hidden, yet weight- and stress-supporting steel connector plate, in the support structure of the massive telescope. A cascade failure of the structure occurred at 9:43 pm, causing the entire telescope to implode. The debris from the collapse was cleared by June 1989, and West
Virginia
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in 1958. No fixed radio transmitters are allowed within the area closest to the telescope. All other fixed radio transmitters including TV and radio towers inside the zone are required to transmit such that interference at the antennas is minimized by methods including limited power and using highly
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Until its collapse on
November 15, 1988, a 300 ft radio telescope stood at the Green Bank Observatory's unique site. It was the largest radio telescope on Earth when it was brought online for its first observation at 12:42 am on September 21, 1962. The telescope's first observation was of
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telemetry transmitters. Electric fences, electric blankets, faulty automobile electronics, and other radio wave emitters have caused great trouble for the astronomers in Green Bank. All vehicles on the premises are powered by diesel motors to minimize interference by ignition systems.
39:
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Lectureship is a prestigious lecture awarded by the board of trustees of the NRAO. The
Lectureship is awarded "to recognize outstanding contributions to the advancement of radio astronomy." Recipients have included
404:
was at one time planted with pines characterized by needles of a certain length to block electromagnetic interference at the wavelengths used by the observatory. At one point, the observatory faced the problem of
400:
technology and microprocessors in everything from cameras to cars, it is difficult to keep the sites free of radio interference. To aid in limiting outside interference, the area surrounding the
391:. The zone consists of a 13,000-square-mile (34,000 km) piece of land where fixed transmitters must coordinate their emissions before a license is granted. The land was set aside by the
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On 12 May 2012, another
Atacama Large Millimeter/submillimeter Array (ALMA) antenna was carried up to the 5,000-metre plateau of Chajnantor, bringing the total on the plateau to 33.
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Science Center and the NRAO Technology Center and
Central Development Laboratory are also in Charlottesville.
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in northern Chile. This is about 40 km (25 miles) east of the historic village of
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NRAO was, until
October 2016, the operator of the world's largest fully steerable
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uncommon for radio telescopes, three 85-foot (26 m) telescopes forming the
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Federally funded research and development center for radio astronomy
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Special
Astrophysical Observatory of the Russian Academy of Science
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859:"National Radio Astronomy Observatory – Legacy Content – Tucson"
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university campus, the AOC serves as the headquarters for the
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The 300-foot telescope after collapsing on
November 15th, 1988
292:. NRAO designs, builds, and operates its own high-sensitivity
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would pioneer a campaign in
Congress to replace it with the
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Combined Array for
Research in Millimeter-wave Astronomy
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The NRAO headquarters is located on the campus of the
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that was discovered to be previously unknown natural
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2176:Federally Funded Research and Development Centers
1490:Multi-Element Radio Linked Interferometer Network
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278:federally funded research and development center
233:Location of National Radio Astronomy Observatory
959:"Halfway There: 33 ALMA Antennas on Chajnantor"
1376:Canadian Hydrogen Intensity Mapping Experiment
525:
1060:
756:"National Radio Quiet Zone — Science Website"
609:, and Mark Reid. The lecture is delivered in
2211:Scientific organizations established in 1956
1366:Australian Square Kilometre Array Pathfinder
368:while he worked for Bell Labs to detect the
324:
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1160:500 meter Aperture Spherical Telescope
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199:
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482:, and is also the control center for the
396:directional antennas. With the advent of
282:United States National Science Foundation
1480:Molonglo Observatory Synthesis Telescope
1317:Warkworth Radio Astronomical Observatory
441:
434:, construction for which began in 1990.
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296:for use by scientists around the world.
284:operated under cooperative agreement by
2206:Research institutes established in 1956
486:(VLBA). The ten VLBA telescopes are in
411:United States Fish and Wildlife Service
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655:"National Radio Astronomy Observatory"
636:National Optical Astronomy Observatory
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1981:Cosmic microwave background radiation
1718:Pushchino Radio Astronomy Observatory
1440:Large Latin American Millimeter Array
1048:
809:"300-ft telescope at Green Bank Site"
522:now operates the 12-Meter Telescope.
473:(VLA), which was the setting for the
2171:Astronomy institutes and departments
2046:
1694:National Radio Astronomy Observatory
1588:Westerbork Synthesis Radio Telescope
659:National Radio Astronomy Observatory
270:National Radio Astronomy Observatory
23:National Radio Astronomy Observatory
2191:Radio astronomy research institutes
1686:Mullard Radio Astronomy Observatory
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506:campus. NRAO formerly operated the
450:(VLA), an array of 27 dish antennas
346:Robert C. Byrd Green Bank Telescope
13:
2201:Science and technology in Virginia
1520:Northern Extended Millimeter Array
631:List of astronomical observatories
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1356:Australia Telescope Compact Array
1178:Caltech Submillimeter Observatory
1121:Very Long Baseline Interferometry
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1410:Giant Metrewave Radio Telescope
1278:UTR-2 decameter radio telescope
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407:North American flying squirrels
1510:Northern Cross Radio Telescope
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532:Atacama Large Millimeter Array
516:Atacama Large Millimeter Array
175:Atacama Large Millimeter Array
1:
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68:Associated Universities, Inc.
1960:Gravitational-wave astronomy
1538:Primeval Structure Telescope
709:Associated Universities, Inc
502:Offices were located on the
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286:Associated Universities, Inc
7:
2186:National Science Foundation
1872:Christiaan Alexander Muller
1738:Vermilion River Observatory
1646:Algonquin Radio Observatory
1111:Astronomical interferometer
884:"Arizona Radio Observatory"
834:"NRAO: Socorro, New Mexico"
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526:San Pedro de Atacama, Chile
10:
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1212:Large Millimeter Telescope
591:Subrahmanyan Chandrasekhar
2031:
1968:
1930:
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1420:Green Bank Interferometer
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1244:RATAN-600 Radio Telescope
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1127:Astronomical radio source
1082:
984:"Jansky Lecture Redirect"
520:Arizona Radio Observatory
381:National Radio Quiet Zone
376:emitted by the universe.
358:Green Bank Interferometer
350:Green Bank, West Virginia
325:Green Bank, West Virginia
315:Charlottesville, Virginia
305:Charlottesville, Virginia
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1702:Nançay Radio Observatory
1678:Jodrell Bank Observatory
1578:Very Long Baseline Array
1254:Sardinia Radio Telescope
484:Very Long Baseline Array
250:Related media on Commons
195:Very Long Baseline Array
1940:Submillimetre astronomy
1552:Australia, South Africa
1404:Event Horizon Telescope
680:"Maps & Directions"
463:Array Operations Center
454:The NRAO's facility in
2181:University of Virginia
1662:Green Bank Observatory
1548:Square Kilometre Array
1009:"2012 Jansky Lecturer"
465:(AOC). Located on the
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428:Senator Robert C. Byrd
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402:Green Bank Observatory
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311:University of Virginia
46:Alternative names
1955:High-energy astronomy
1842:Sebastian von Hoerner
1450:Long Wavelength Array
1396:European VLBI Network
1336:Allen Telescope Array
1236:Qitai Radio Telescope
504:University of Arizona
445:
420:
379:Green Bank is in the
332:
317:. The North American
288:. for the purpose of
2023:Solar radio emission
1812:Jocelyn Bell Burnell
1670:Haystack Observatory
1204:Green Bank Telescope
1188:Effelsberg Telescope
603:Jocelyn Bell Burnell
540:San Pedro de Atacama
518:(ALMA) instead. The
432:Green Bank Telescope
348:, which stands near
335:Green Bank Telescope
185:Green Bank Telescope
2166:Radio observatories
1996:Pulsar timing array
1802:Edward George Bowen
1792:Elizabeth Alexander
1654:Arecibo Observatory
1558:Submillimeter Array
1460:Low-Frequency Array
1430:Korean VLBI Network
1296:Southern Hemisphere
1207:(West Virginia, US)
938:Almaobservatory.org
913:Almaobservatory.org
492:U.S. Virgin Islands
438:Socorro, New Mexico
385:Sugar Grove Station
116:38.0368°N 78.5181°W
112: /
24:
1976:Aperture synthesis
1945:Infrared astronomy
1882:Joseph Lade Pawsey
1852:Kenneth Kellermann
1822:Nan Dieter-Conklin
1530:One-Mile Telescope
1309:Parkes Observatory
888:Aro.as.arizona.edu
508:12-Meter Telescope
452:
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2001:Radio propagation
1950:Optical astronomy
1847:Karl Guthe Jansky
1657:(Puerto Rico, US)
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1173:(Puerto Rico, US)
1170:Arecibo Telescope
587:Edward M. Purcell
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1991:Odd radio circle
1969:Related articles
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1931:Astronomy by
1892:Arno Penzias
1832:Cyril Hazard
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1474:South Africa
1265:(Uzbekistan)
1105:Radio window
1016:. Retrieved
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838:Aoc.nrao.edu
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658:
649:
607:Frank J. Low
571:
568:Jansky Prize
529:
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409:tagged with
378:
370:interference
339:
308:
273:
269:
267:
61:Organization
2114:Outer space
2102:Spaceflight
2011:Wow! signal
1902:Martin Ryle
1897:Grote Reber
1827:Frank Drake
1768:(Australia)
1602:Space-based
1592:Netherlands
1464:Netherlands
1434:South Korea
1312:(Australia)
1262:Suffa RT-70
813:Gb.nrao.edu
788:Gb.nrao.edu
735:Gb.nrao.edu
544:Antofagasta
374:radio waves
366:Karl Jansky
132:Established
119: /
94:Coordinates
19:Observatory
2160:Categories
1933:EM methods
1153:telescopes
1151:Individual
818:August 17,
642:References
615:Green Bank
599:Vera Rubin
579:Fred Hoyle
475:1997 movie
168:Telescopes
135:1959
107:78°31′05″W
104:38°02′12″N
49:NRAO
2138:Education
2078:Astronomy
1917:Paul Wild
1750:Multi-use
1730:(SAORAS,
1504:Australia
1492:(MERLIN,
1484:Australia
1370:Australia
1360:Australia
1289:(Ukraine)
1281:(Ukraine)
1191:(Germany)
617:, and in
512:Kitt Peak
300:Locations
2041:Category
1877:Jan Oort
1776:(Canada)
1760:(Canada)
1713:(Sweden)
1705:(France)
1649:(Canada)
1619:Spektr-R
1462:(LOFAR,
1442:(LLAMA,
1399:(Europe)
1388:(CARMA,
1378:(CHIME,
1368:(ASKAP,
1215:(Mexico)
1199:(Russia)
1083:Concepts
1013:Nrao.edu
988:Nrao.edu
684:Nrao.edu
625:See also
398:wireless
85:Location
2150:Science
2064:Portals
2051:Commons
1590:(WSRT,
1580:(VLBA,
1540:(PaST,
1482:(MOST,
1470:MeerKAT
1412:(GMRT,
1358:(ATCA,
1348:(ALMA,
1301:HartRAO
1273:(Japan)
1257:(Italy)
1239:(China)
1231:(India)
1162:(FAST,
1115:History
1089:Units (
793:May 20,
765:May 20,
740:May 20,
715:May 20,
619:Socorro
479:Contact
458:is the
456:Socorro
280:of the
276:) is a
147:Website
1785:People
1732:Russia
1722:Russia
1623:Russia
1570:(VLA,
1560:(SMA,
1550:(SKA,
1524:France
1502:(MWA,
1452:(LWA,
1432:(KVN,
1422:(GBI,
1380:Canada
1338:(ATA,
1248:Russia
1180:(CSO,
1123:(VLBI)
1095:jansky
1018:20 May
993:20 May
968:15 May
943:20 May
918:20 May
909:"ALMA"
893:20 May
868:20 May
843:20 May
689:20 May
664:20 May
490:, the
488:Hawaii
344:, the
243:
197:
152:public
70:
2090:Stars
1613:Japan
1609:HALCA
1542:China
1514:Italy
1414:India
1406:(EHT)
1350:Chile
1164:China
784:(PDF)
257:[
154:.nrao
2006:SETI
1773:PARL
1757:DRAO
1741:(US)
1697:(US)
1689:(UK)
1681:(UK)
1673:(US)
1665:(US)
1533:(UK)
1320:(NZ)
1223:(UK)
1142:List
1093:and
1091:watt
1020:2019
995:2019
970:2012
945:2019
920:2019
895:2019
870:2019
845:2019
820:2022
795:2019
767:2019
742:2019
717:2019
691:2019
666:2019
572:The
530:The
446:The
362:horn
319:ALMA
274:NRAO
268:The
156:.edu
510:on
389:NSA
313:in
2162::
1582:US
1562:US
1494:UK
1182:US
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