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2013 September 21 Sun -summary

[複製連結]
發表於 2013-9-22 11:47:01 | 顯示全部樓層 |閱讀模式
Most of the active regions are in the eastern hemisphere.
AR11846 near the SE limb is dominated by a large sunspot, and flares to the east of the spot.  AR11845 is to the west of AR11846 and AR11848 is further to NW.
AR11850 is close to the E limb in the northern hemisphere.  This AR comes with several small sunspots and large area od flares and many filaments.  To the east of this AR is a huge prominence which may be associated with the AR.
AR11849 is approaching the meridian and is very active with flares and eruptive filaments.  AR11847 is some where mid way between AR11849 and AR11850.

The western hemisphere is full of filaments.  AR11841 is close to the W limb, and the more active AR11843 is to its west.  Both are very close to the solar equator.

The huge filament in the NW is now exiting the solar disc, giving an active prominence connecting the filament.

On the solar limb, several eruptive prominences are present.  The huge prominence group on the E limb is very complex.  The 2 prominences on the SE limb are of completely different morphology.  ANother complex prominence appears on the S 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
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