2015 Sept. 20 Sun - 3rd day of a huge prominence
2 days later, the huge prominence has turned into a huge dark filament.Many featurea are visible, especially the barks that are anchored on the 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.
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