Solar Tunnel Telescope at Kodaikanal
Amil Kumar Das (1902 – February 18, 1961) was an Indian astronomer. During the International Geophysical Year, observatories in Madrid, India, and Manila were responsible for monitoring solar effects. The Kodaikanal Solar Observatory in South India performed this monitoring using their recently built solar tunnel telescope. Dr. Das was the director of the Kodaikanal observatory at this time. In 1960 he was responsible for installing a tower/tunnel telescope at the facility that would be used to perform some of the first ever helioseismology investigations. The crater Das on the far side of the Moon is named after him.