Taken from the Pony Club two weeks ago during far from ideal conditions. Lots of high level haze and skyglow. I was going to dump the frames I took but on stacking them, they were not "too" bad.
Stack of 1 minute frames (10) using a Sigma 50mm F1.4 on a Canon 7D and Polarie at ISO 800
http://farm8.staticflickr.com/7343/9...c235025d_h.jpg