steady traveler

giant AR4079 has grown to 11 Earths wide, 140.000 km, which was, more or less, a full day of Apollo travel to the Moon. The structure of the sunspot remains quite constant with well defined leading and trailing segments and a more fragmented intermediate one; its magnetic configuration has lost the delta component so its activity is stable as well.

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

crop,B/C