Ground Observatories

7-NOV-09 16:54:26 U.T.
B0 = 3.6 P = 23.1

Big Bear H-alpha 06-Nov-09 20:50:44

Big Bear White-light 21-Sep-06 20:54:36

Catania H-alpha

MLSO K-corona

Sac Peak H-alpha

Sac Peak He 1083 nm

Kitt Peak Photospheric

Kitt Peak Chromospheric

Mt. Wilson magnetic 10-21-09