NGC 5218 (top) and NGC 5216 (below) are an interacting galaxy pair in UMa.
The most notable feature here is the tidal tail between the two galaxies,
which is several times larger than the galaxies themselves.
Taken from the middle of Berlin with a 10" Meade ACF at f/6.4 on a G11
mount, SXV-H9 camera, 47x5 minutes.
The picture can also be found at
http://ccd-astronomy.de/temp/5218-47x5gut.jpg
Stefan