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The Multi-resolution CLEAN

Published online by Cambridge University Press:  12 April 2016

B.P. Wakker and
U.J. Schwarz
B.P. Wakker
Affiliation:
University of Illinois, Department of Astronomy, 1002 W. Green St, Urbana IL61801
U.J. Schwarz
Affiliation:
Kapteyn Laboratory, Postbus 9700AV, Groningen

Abstract

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We describe a modification to CLEAN which alleviates some problems for extended sources. This is accomplished by combining the results of a number of conventional CLEAN operations, each done at a different resolution. The algorithm is called “Multi-Resolution Clean” or “MRC”. Experiments on model sources have shown that it works well even when the source is so extended that the usual CLEAN becomes impractical. For extended sources, MRC enhances the signal-to-noise ratio, resulting in an easier definition of the area of signal. Moreover, MRC is in principle faster than a standard CLEAN because less δ-functions are needed. This work was published in Astr. Ap., 200, 312.

Information

Type
Imaging
Information
International Astronomical Union Colloquium , Volume 131: Radio Interferometry: Theory, Techniques, and Applications , 1991, pp. 268 - 271
Copyright
Copyright © Astronomical Society of the Pacific 1991

References

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