The very active AR12158 shows unusual flares from its umbra on September 9, 2014 and follows with filaments from the umbra on September 10.
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
發表於 2014-9-12 20:34:44