Here are some of the best M51 supernova (the "Whirlpool Galaxy") pictures off of Flickr:
from: http://www.flickr.com/photos/astrogabe/
from: http://www.flickr.com/photos/43846774@N02/
from: http://www.flickr.com/photos/43846774@N02/
http://www.flickr.com/photos/beercia/
http://www.flickr.com/photos/jok/
http://www.flickr.com/photos/lmamakos/
http://www.flickr.com/photos/57858221@N06/
