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An ‘X-Banded’ Tidbinbilla Interferometer

Published online by Cambridge University Press:  25 April 2016

Michael J. Batty ,
R. G. Gardyne ,
G.J. Gay ,
S. Gulkis ,
David L. Jauncey ,
A. Kirk  and
W. L. Peters
Michael J. Batty
Affiliation:
Division of Radiophysics, CSIRO, Sydney 2 School of Electrical Engineering, University of Sydney
R. G. Gardyne
Affiliation:
Division of Radiophysics, CSIRO, Sydney
G.J. Gay
Affiliation:
Division of Radiophysics, CSIRO, Sydney
S. Gulkis
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena
David L. Jauncey
Affiliation:
Division of Radiophysics, CSIRO, Sydney
A. Kirk
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena
W. L. Peters
Affiliation:
Mount Stromlo and Siding Spring Observatories, Canberra
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Abstract

The recent upgrading of the Tidbinbilla two-element interferometer to simultaneous S-band (2.3 GHz) and X-band (8.4 GHz) operation has provided a powerful new astronomical facility for weak radio source measurement in the Southern Hemisphere. The new X-band system has a minimum fringe spacing of 38 arcsec, and about the same positional measurement capability (approximately 2 arcsec) and sensitivity (1 s rms noise of 10 mJy) as the previous S-band system. However, the far lower confusion limit will allow detection and accurate positional measurements for sources as weak as a few millijanskys. This capability will be invaluable for observations of radio stars, X-ray sources and other weak, compact radio sources.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 6 , Issue 3 , 1986 , pp. 351 - 353
Copyright
Copyright © Astronomical Society of Australia 1986

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References

Batty, M. J., Jauncey, D. L., Rayner, P. T. and Gulkis, S., 1982, Astron. J., 87, 938.CrossRefGoogle Scholar
Hills, R. E., Janssen, M. A., Thornton, D. D. and Welch, W. J., 1973, Proc. IEEE, 61, 1278.Google Scholar
Jauncey, D. L., Batty, M. J., Gulkis, S. and Savage, A., 1982, Astron. J., 82, 763.Google Scholar
Rayner, P. T. and Batty, M. J., 1980, Proc. Astron. Soc. Aust., 4, 28.Google Scholar