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OBSERVATIONS OF 4.3 MM RADIATION DURING THE SOLAR ECLIPSE OF 15 FEBRUARY 1961
TEXAS UNIV AUSTIN ELECTRICAL ENGINEERING RESEARCH LAB
Techniques used and results obtained in the observation of the solar eclipse of 15 Feb 1961 at a wavelength of 4.3 millimeters are described. Measurements during the period in which the sun was being eclipsed showed a variation in emission as great as two to one between regions that were larger than 0.1 of the solar disc. During the period of solar occultation a mean radiating temperature of 200 K was observed, which was equal to the emission temperature of the moon. Approximately 30 seconds after the second contact, a brightness temperature of approximately 200 K was observed at the western edge of the moon. This was attributed to a solar flare. Author