Submit your photo here. Comment or upvote on photo pages. Search via photographers' names. More improvements coming! To help, please donate.
Newt 4.5" + solar film, 1/500s ISO100
crop, B/C
Sun photosphere evolves fast, in one day the group AR3538 vanished, AR3536 acquired more black cores and, below it, a new unnamed sunspot group appeared from seemingly nowhere; AR3540, closer to the eastern limb. rotates steady and uneventful