Observation of microwave radio Sun during total solar eclipse on October 24, 1995 by Eastern Centre for Research in Astrophysics (ECRA).

Observations of the microwave emission from the Sun in the C-band, at 4 GHz, have been made during the total solar eclipse of 24 October 1995. The results obtained from preliminary analyses of the data indicate that the ratio of the diameters of the radio Sun to that of the optical Sun is 1.04 and that the radio brightness distribution of the microwave Sun is not uniform. Also, a prominent peak in the brightness distribution was found to be associated with an active region on the solar disk near a sunspot group. The precision of the one-dimensional radio map made from the records of the solar radio eclipse was 20″using a 12-ft diameter antenna with 1.4° beamwidth. More detailed analyses and correlation of the results with Hα maps, magnetograms and a 17-GHz solar map made in Japan are in progress.