Monday 14 March 2011

Ha Close Up Sunday 13th March 2011

active sun ha lrg, originally uploaded by Mark Townley.

An interesting western hemisphere on the sun today with large active regions 1166 & 1169 heading closer to the limb. A smaller non named active region follows these two which showed three small spots in white light. In the southern hemisphere a couple of large contrasty filaments could be seen. Magnetic field lines can be seen sprawling around the active regions.