waiting

The very active sunspot AR4432 has produced about a dozen C-class flares the last day and increased its size more than four times with the apparition of a cluster of dark cores. But we are waiting the active region which is just rotating the 10 o'clock limb and will be quite distinct tomorrow; if it is indeed former AR4419, it will be achieving a full Sun rotation, quite a feat for a moderate size spot

Newt 4.5" + solar film, 1/640s ISO100

crop, b/c