55 citations · 91 across the 3 of their papers we have counts for
3 papers
Analysis of full disc Ca II K spectroheliograms III. Plage area composite series covering 1892-2019
Theodosios Chatzistergos, Ilaria Ermolli, Natalie A. Krivova +16
We derive the plage area evolution over the last 12 solar cycles employing data from all Ca II K archives available publicly in digital form known to us, including several as yet u…
Long term study of the solar filaments from the Synoptic Maps as derived from Spectroheliograms of Kodaikanal Observatory
Subhamoy Chatterjee, Manjunath Hegde, Dipankar Banerjee +1
The century long (1914-2007) (656.28 nm) spectroheliograms from Kodaikanal Solar Observatory (KSO) have been recently digitised. Using these newly calibrated, processed image…
Night sky at the Indian Astronomical Observatory during 2000-2008
C. S. Stalin, M. Hegde, D. K. Sahu +4
We present an analysis of the optical night sky brightness and extinction coefficient measurements in UBVRI at the Indian Astronomical Observatory (IAO), Hanle, during the period 2…