Monday 12 August 2013

ar11809 11th august

ar11809 ha colour by Mark Townley
ar11809 ha colour, a photo by Mark Townley on Flickr.

There's not a great deal of activity left in this active region as it draws ever closer to the western limb, however the filament should turn into and interesting prominence as it rounds the edge of our star. Taken with the 100mm at 2000mm fl with the DMK31.