A Survey of the Southern Sky at 85 MHz

Abstract

A survey at 85 MHz is presented of the sky south of declination 0 = _20°,and of the northern galactic spur region to 0 = +20°. The survey was made withthe 210 ft telescope at Parkes, New South Wales. At this frequency the observedbeamwidth was 3.5° by 3· 8° to half-power points. The radiation characteristics ofthe survey aerial and of scaled aerial models were studied to enable corrections to bemade for radiation received by the aerial from regions outside the main beam.Absolute beam temperatures derived from the observed aerial temperatures had anr.m.s. accuracy of better than 7%.