Ravindra, B; Chowdhury, Partha; Ray, Pratap Chandra; Pichamani, Kumaravel
(American Astronomical Society, 2022-11-20)
The Kodaikanal Observatory has made synoptic observations of the Sun in white light since 1904, and these images are sketched on the Stonyhurst grids called Sun charts. These continuous hand-drawn data sets are used for ...