Ravindra, B; Priya, T. G; Amareswari, K; Priyal, M; Nazia, A. A; Banerjee, D
(EDP Sciences, 2013-02)
Photographic images are valuable data resources for studying long term changes in the solar magnetic field and its influence on the Earth's climate and weather.
We digitized more than 100 years of white light images stored ...