Asymmetric structures in a portion of the X-ray image (smoothed version of Fig. 4) in red and the DSS2-R image in light blue. The DSS image has been lightly processed to emphasize diffuse sources (galaxies) relative to numerous compact sources (e.g., stars). The chain of galaxies that begins with NGC 1275 extends up to IC310, which appears to be at the peak of extended X-ray emission to the west of the cluster center. Further to the west (outside of the image), there is a cluster AWM7/2A0251+413 at a redshift similar to the Perseus cluster.