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Techniques for Mapping Galactic SNRs with the MOST

Published online by Cambridge University Press:  25 April 2016

R. S. Roger ,
D. K. Milne ,
K. J. Wellington ,
R. F. Haynes  and
M. J. Kesteven
R. S. Roger
Affiliation:
Division of Radiophysics, CSIRO, Sydney
D. K. Milne
Affiliation:
Division of Radiophysics, CSIRO, Sydney
K. J. Wellington
Affiliation:
Division of Radiophysics, CSIRO, Sydney
R. F. Haynes
Affiliation:
Division of Radiophysics, CSIRO, Sydney
M. J. Kesteven
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

The Molonglo Observatory synthesis telescope (MOST) of the University of Sydney (Mills 1981) produces maps of the 843 MHz continuum emission from fields of width 23′, 46′ or 70′ arc. The telescope comprises two co-linear east-west cylindrical paraboloids each 2186λ in length and separated by a gap of 43λ. For each paraboloid a phasing network (Durdin et al. 1984) generates a comb of 64 contiguous fan beams. Mapping is accomplished in real time during a 12-h observation by overlaying, in the map plane, the instantaneous cross-correlations of corresponding beams. The synthesized point-source response (beam) produced by this method has a width of 43″ (E-W) by 43″ cosec δ (N-S).

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 5 , Issue 4 , 1984 , pp. 560 - 562
Copyright
Copyright © Astronomical Society of Australia 1984

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References

Crawford, D. F., in Indirect Imaging (ed. Roberts, J. A.), p. 373 (Cambridge University Press) (1984).Google Scholar
Durdin, J. M., Large, M. I., and Little, A. G., ibid, p. 75.Google Scholar
Kesteven, M. J., ibid, p. 261.Google Scholar
Mills, B. Y., Proc. Astron. Soc. Aust., 4, 156 (1981).Google Scholar