(Sorry for delaying posting these images. There has been a major disaster in the late night on September 10, when my 3-TB backup HDD dropped 0.5 m onto the floor while reading/writing the September 9 images. The result is (or may be, as I still need time to start savage action) loss of several days of data. The data for August 29, 30 and September 9 may be forever lost.)
While there is not much activity on the west hemisphere, the western limb give show of many prominences, probably as a result of the edge-on behaviour of AR11836 and AR11837.
Meanwhile, the activites of the southern hemisphere continue to develop. AR11838 shows many filaments and flares. The huge area of plages and flares to its SW has crossed the meridian and continues to develop, there is strong possibility for the formation of some AR's in this region. The large dark filament has disappeared.
The huge, S-shaped filament to the south has changed a lot in a day, and its activity seems to have intensified.
There are several large eruptive prominences on the W and SW limb.
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 2013-9-20 10:13:30