AR11834 changes greatly in the 3 days, with the rapid dissipation of the huge and thick filament to the east, and development of a dark filament to the west of the flares. Finally, the relatively compact flaring region on Aug. 26 becomes dispersed on Aug. 28.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
North is up, and east to the left
PTS |
發表於 2013-8-31 16:16:48