http://antwrp.gsfc.nasa.gov/apod/ap060317.html
It's easier if you click the picture to get the full size one, but Messier 51 is clearly visible as a fuzz on the shot, "above" and just "right" of Alkaid, (the furthest right star).
APOD 17th March 2006.
APOD 17th March 2006.
Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.