action in the southeast

great string of sunspots in the southeast, with the less prominent AR3873 at far left beeing the more explosive one; the two bigger dark cores in the image are observable without optical aid, besides, you can perceive also the rest of the body of the chain; and a newcomer is rotating the limb at 10 o'clock; very, very interesting sun

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

crop, B/C