Apart from the huge filament, there are several active regions: AR12418, AR12420, AR12421 and AR12422.
These AR's all produce flares throughout their stay on the solar disc.
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.
2015 September 23 Sun
2015 September 23 Sun
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