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A comparison of full disk and 28 cm telescope irradiance data from four days in June 1985
Sunspot irradiance data from four days in June, 1985 have been collected and reduced by two different observational systems and their corresponding data reduction techniques. The different systems consist of a 2.5 centimeter aperture full disk telescope with an interference filter and a 28 centimeter aperture vacuum telescope with a vacuum spectroheliograph. A comparison of data from the two systems show a high degree of correlation of data from the two systems show a high degree of correlation between sunspot areas and corresponding irradiance deficits from the one system to those of the other. If a specific relationship can be determined, the full disk system, of lower resolution, may be calibrated with the data from the higher resolution 28 cm telescope system. Ultimately data from the 2.5 cm telescope disk imaging system can be compared with space borne bolometric results.