Photo Courtesy of Wellesley College Archives1939
A graduate student in astronomy observes sunspots with a spectrohelioscope. The solar image is reflected by mirrors from the roof of the Whitin Observatory to a basement laboratory.
Photo Courtesy of Wellesley College ArchivesA graduate student in astronomy observes sunspots with a spectrohelioscope. The solar image is reflected by mirrors from the roof of the Whitin Observatory to a basement laboratory.