National Oceanic and Atmospheric Administration / Helios Network AAVSO Sonne Germany Preliminary O.A.A. Japan Solar Observer Society TOS Poland Astronomical League / /
Person
Wolf Wolf Wolf Groups Faculae / Francis Meeus / Guido Mattheus / Van Hessche / Marc Rayen Dag / Gabriel Dekelver Janssen / Dat Mea / Van Loo / Beck Pettis Intersol / /