Sergio Cortesi left us

Doyen of professional and amateur astronomy in Ticino, former director of the Specola Solare Ticinese, with 64 years of activity in the Sunspot observations, among the founders and then long-time president of the Società Astronomica Ticinese, Sergio Cortesi is no longer with us. We will miss him very much.
RSI La 2 broadcasted on 22th Feb. 2020 a documentary about the activity of Sergio Cortesi at the Specola.

Sergio Cortesi left us

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