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38. The cambridge survey of radio sources

Published online by Cambridge University Press:  14 August 2015

J. R. Shakeshaft
J. R. Shakeshaft*
Affiliation:
Cavendish Laboratory, Cambridge, England

Extract

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A survey of radio sources at a wave-length of 3·7 metres has been carried out with a large interferometric radio telescope (Ryle and Hewish, 1955) [1] which has a receiving area of about 5000 square metres. Four parabolic troughs are arranged at the corners of a rectangle 600 metres east–west by 50 metres north–south. The reception polar diagram of each, ± 1° by ± 7° to half-power points, is thus filled with interference fringes in the north–south plane as well as the east–west plane. Sources are observed at transit, the time of which gives the right ascension, while the declination is obtained by comparing the observed intensity on successive days as the phase of the north–south pattern is altered.

Type
Part III: Galactic Structure and Statistical Studies of Point Sources
Information
Symposium - International Astronomical Union , Volume 4: Radio Astronomy , 1957 , pp. 218 - 220
Copyright
Copyright © Cambridge University Press 1957 

References

1. Ryle, M. and Hewish, A. Mem. R.A.S. 67, 97, 1955.Google Scholar
2. Shakeshaft, J. R., Ryle, M., Baldwin, J. E., Elsmore, B. and Thomson, J. H. Mem. R.A.S. 67, 106, 1955.Google Scholar
3. Hanbury Brown, R. and Hazard, C. Nature , 170, 364, 1952.Google Scholar
4. Hanbury Brown, R., Palmer, H. P. and Thompson, A. R. Nature , 173, 945, 1954.Google Scholar
5. Ryle, M., Smith, F. G. and Elsmore, B. M.N.R.A.S. 110, 508, 1950.Google Scholar