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Very long baseline interferometric observations made with an orbiting radio telescopeAn orbiting spacecraft and ground observatories have been used to obtain interferometric observations of cosmic radio sources. The Tracking and Data Relay Satellite System (TDRSS) was used as the orbiting observatory in conjunction with two 64-meter radio telescopes at ground observatories, one in Australia and one in Japan. The quasars 1730-130 (NRAO 530), 1510-089, and 1741-038 were observed at a frequency of 2.3 gigahertz, and a maximum projected baseline of 1.4 earth diameters was achieved. All quasar observations for which valid data were acquired resulted in detected fringes. Many of the techniques proposed for a dedicated very long baseline interferometry observatory in space were used successfully in this experiment.
Document ID
19870031322
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Levy, G. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Linfield, R. P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ulvestad, J. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Edwards, C. D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jordan, J. F., Jr.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Di Nardo, J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Christensen, C. S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Preston, R. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Skjerve, L. J.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Blaney, K. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
October 10, 1986
Publication Information
Publication: Science
Volume: 234
ISSN: 0036-8075
Subject Category
Astronomy
Accession Number
87A18596
Distribution Limits
Public
Copyright
Other

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