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Hazards and Future Improvements to HI Surveys

Published online by Cambridge University Press:  05 March 2013

J. Richard Fisher
J. Richard Fisher*
Affiliation:
National Radio Astronomy Observatory, PO Box 2, Green Bank, WV 24944, USA; rfisher@nrao.edu
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Abstract

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Most radio astronomical observations are affected to some degree by man-made and natural interference. There are a few avoidance techniques that can reduce the impact of interference on the survey, but we must make quite significant advances in the understanding of our antennas and receivers and the interference itself before a substantial improvement can be expected. A major increase in the efficiency of future surveys will likely come from phased-array feeds, which have the potential for much closer beam spacings, greater antenna efficiency, and wider fields of view than current independent-feed arrays.

Keywords

instrumentation: miscellaneoustechniques: spectroscopic
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 14 , Issue 1 , 1997 , pp. 96 - 98
Copyright
Copyright © Astronomical Society of Australia 1997

References

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