
%0 Journal Article
%A Price, RM 
%T A Measurement of the Sky Brightness Temperature at 408 MHz
%J Australian Journal of Physics
%D 1969/10/01
%V 22
%N 5
%P 641-654
%K 
%R https://doi.org/10.1071/PH690641
%U https://www.publish.csiro.au/paper/PH690641 
%X The absolute value of the background brightness temperature has been measured at a radiofrequency of 408 MHz. Observations were made with a large pyramidal "standard gain" horn aerial and the aerial temperatures were compared direct with the temperature observed with the receiver input connected to a matched resistive load of known temperature. For the region within 240 of the south celestial pole an average brightness temperature of 23· 9°K was obtained. Observations of northern regions indicate that values from previous determinations at northern latitudes are 4-5 degK too high. 
