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20182021
most citedSunspot Catalogue of the Observatory of the University of Coimbra (1929-1941)

18 citations · 19 across the 2 of their papers we have counts for

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astro-ph.SR2018

Software tool for automatic detection of solar plages in the Coimbra Observatory spectroheliograms

T. Barata, S. Carvalho, I. Dorotovic +4

Full-disk spectroheliograms have been taken in Coimbra on a daily basis since 1926 in the Ca II K-line (K1 and K3). Later, in 1989, with the upgrade of the equipment it was possibl…