A High-resolution Survey of the Andromeda Nebula at 408 Mc./S.

Details A High-resolution Survey of the Andromeda Nebula at 408 Mc./S. A High-resolution Survey of the Andromeda Nebula at 408 Mc./S.

May 1959

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1959natur.183.1250l&link_type=abstract

Nature, Volume 183, Issue 4670, pp. 1250-1251 (1959).

Physics

25

Scientific paper

IN December 1958 observations of the Andromeda Nebula were made using the 250-ft. radio telescope at Jodrell Bank1. A Dicke type radiometer, passband 408 +/- 2 Mc./s., noise figure 6 db., was used. The beam was elliptical, having half-power widths of 40 and 56 min. of arc. The system was calibrated using radio source 14N5A, which was assumed to have a flux2 of 47 × 10-26 W.m.-2 (c./s.)-1. Figs. 1, 2 and 3 show the intensity contours of the nebula, averaged scans along the major and minor axes, and an actual record of a scan through the nebula.

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