AR12420 just appears on the E limb. The spot is highly elongated and it give a show of "firework" .
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 2015-9-21 11:49:20