AR12629 suddenly appears on the NE limb on Jan 25, where no activity is visible the previous day. It has evolved into a bipolar group with the leading spot splitting up.
Here are images from Jan 25.
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 2017-1-30 23:41:20