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Photometry of a Solar Flare
1947
Publications of the Astronomical Society of the Pacific
The McMath-Hulbert Observatory has in progress a program of measurement of the brightness of solar flares. The measures are made on spectroheliograms obtained with the 50foot tower telescope of the McMath-Hulbert Observatory. All images are recorded on 35 .mm motion picture film, Eastman emulsion 0-405-05-01. Each series of photographs has been standardized with an optical wedge, using the center of the sun as a light source. Particularly interesting results have been obtained for the rate of
doi:10.1086/125965
fatcat:jk5i3i2xvzblnia7vjrwk7ahiu