2017 October 25 Sun - plage-filament in the S hemisphere
The northern part of the filament is all but broken up and mixed with the surrounding plages. The southern part has grown to a huge dimension.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm (f/28) for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
2017 October 25 Sun - plage-filament in the S hemisphere
2017 October 25 Sun - plage-filament in the S hemisphere
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