Sunday, 26 August 2012

AR11554 26th August

ar11554 by Mark Townley
ar11554, a photo by Mark Townley on Flickr.

This active region shows a bit more promise in terms of activity, with quite a few small spots making up the group. Still not got the orientation of my PST etalon completely sorted out as this and the previous picture show a general grading of bandwidth of the filter across the field of view. I just need the sun to come out and stay out for long enough to get the whole setup collimated!