Monday 29 July 2013

ar11801 ha closeup 27th July

ar11801 ha closeup by Mark Townley
ar11801 ha closeup, a photo by Mark Townley on Flickr.

Taken with the 100mm PST mod at 3200mm fl with the DMK31 camera, this lone sunspot has an unusual bright aureole around the penumbra of the spot.

Posted by BrierleyHillSolar at Monday, July 29, 2013