The area of the Milky Way where Perseus and Cassiopeia meet is an extremely interesting part of the sky.  Aside from the spectacular Double Cluster, there are numerous additional open clusters in both constellations, and the two huge emission regions known as the Heart and Soul Nebula.  This image was made with my Nikon which is not sensitive to H-alpha radiation, so they don't show up as emission regions, but the associated clusters are seen.  The second cluster identified by Jürgen Stock is huge!  Also note the dark dust clouds that block the more distant stars in the area below left of IC 1805, as well as additional dark areas around NGC 663.  Unannotated image.