I've added another video from the excellent Spitzer Hidden Universe series by NASA to the Star Viewer map. This video is of the Star Nebula (aka W5 or IC 1848.
The Soul Nebula is an emission nebulae in Cassiopeia. Several small open clusters are embedded in the nebula: CR 34, 632, and 634 (in the head) and IC1848 (in the body). The object is more commonly called by the cluster designation IC 1848. Small emission nebula IC 1871 is present just left of the top of the head, and small emission nebulae 670 and 669 are just below the lower back area.