Singh, J; Priyal, Muthu; Ravindra, B; Bertello, Luca; Pevtsov, Alexei A
(American Astronomical Society, 2022-03-10)
The "equal-contrast technique" (ECT) methodology, developed by Singh et al. to generate uniform long time series of Ca-K images obtained during the 20th century from the Kodaikanal Observatory (KO), improved the correlation ...