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Fundamentals and Deficiencies of Aperture Synthesis

Published online by Cambridge University Press:  12 April 2016

Edward B. Fomalont
Edward B. Fomalont*
Affiliation:
National Radio Astronomy Observatory, Green Bank, West Virginia 24944U.S.A.

Extract

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Aperture synthesis is the method used by astronomers to determine the accurate brightness distribution of the radio sky with a resolution much better than that possible with a single large antenna. The technique, now over a decade old, utilizes a large number of connected radio antennas, some of them physically moveable, to follow a region of sky for many hours or days in order to sample the spatial coherence function of the radiation field over a sufficiently large area and with a reasonable filling factor. Landmark references for aperture synthesis are McCready et al. (1947), Stanier (1950), Christiansen and Warburton (1955), Lequeux et al. (1962), Read (1961) and Ryle and Hewish (1960).

Type
Part I: Aperture Synthesis Methods
Information
International Astronomical Union Colloquium , Volume 49: Image Formation from Coherence Functions in Astronomy , 1979 , pp. 3 - 18
Copyright
Copyright © Reidel 1979

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