PTS 發表於 2015-10-1 18:43:56

2015 Sept. 25 Sun -8th day of a huge filament

The huge filament now looks like a huge lobster.
Many knobs and barbs are visible in this filament.
AR12423, to the west of the filament, is showing some flares and minor filaments.

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.
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