Browsing Royal Observatory of Belgium and the Planetarium by Author "Clette F."
Now showing items 1-6 of 6
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A global small sunspot deficit at the base of the index anomalies of solar cycle 23
Lefèvre L.; Clette F. -
Observations of the solar corona in polarized white light during the total solar eclipse of February 16, 1980 Preliminary results
Clette F.; Cugnon P.; Koeckelenbergh A. -
Revisiting the Sunspot Number. A 400-Year Perspective on the Solar Cycle
Clette F.; Svalgaard L.; Vaquero J. M.Cliver E. W. et al. -
Survey and Merging of Sunspot Catalogs
Lefevre L.; Clette F.