big spots comeback

mighty former AR4079, now AR4100, is with us for a second tour across the sun face, it exhibits two big dark cores and is observable with protected eye alone; besides, its numerical predecessor AR4099 ha also built a respectable size, although neither of them has an unstable magnetic configuration. Unsteady atmosphere in the wake of a bad weather front.

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

crop, B/C