The radiometric Observations of the lunar temperature were carried out between from November 1972 to September 1973 at a wave-length of 6.0 mm, using the 1500 mm antenna of Kisarazu Technical College. The measured half power beam width of the antenna was 20'. The mean brightness temperature is 212゜K, and the minimum temperature is about 170゜K, and the maximum brightness temperature is about 260゜K at the near full moon. An intersting point in this curve is that the phase lag is about 35 degrees.
