2016 July 15 Sun
After relatively quiet month, several very active regions appears on the Sun.The most notable groups are AR12564 with lots of fine filaments, and AR12565, AR12566 and AR12567 which combine to give lots of flares and dark filaments.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.
頁:
[1]