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2013 October 02 Sun -summary

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發表於 2013-10-3 00:28:52 | 顯示全部樓層 |閱讀模式
AR11855 is crossing the meridian and is still dominating the solar surface.  Flaring activity seems to be less than yesterday.
The active but not named regions has not changes too much since yesterday.  However, 2 seemingly very active groups are turning to the front.  Flares are visible. and these produce actively erupting prominences on the limb.

The small AR11854 is close to the solar equator in the north.  Some bright patches of plages are visible together with some filament.

The 2 long strip of filaments running in the E-W direction  have broken up and are fading.  These fialments are part of a long strip of activity along mid-latitude in the north.

On the solar limb, several prominences show up.  The one on the SE limb is eruptive.

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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