Anil Kumar Das, Indian astronomer (Chinsura Hoogly, West Bengal 01 February 1902 – Hyderabad 18 February 1961)

Authored about 40 papers

Explained a large number of solar phenomena

Measured the temperature difference between the pole and equator of the Sun (1953) confirming the Bjerknes theory of 1926  

Showed that the area of calcium prominences in Sun’s atmosphere was indeed maximum in January and minimum in July (1940)

INSTRUMENTS

With B.B. Roy & D.N. Das Gupta. A new upper air temperature indicator. Gerlands Beitr. Z. Geophys. 36:4-6, 1932

Simple instruments for studying temperature inversions in the free atmosphere. Gerlands Beitr. Z. Geophys. 37:224-32, 1932

With R. Anantha Krishnan & B.N. Bhargava. A recording photoelectric photometer. Indian J. Met. Geophys. 2:151-61, 1951

HONORS

Lunar crater Das