Galaxy Clusters Abell 2731 Galaxy Cluster Abell 2731 Galaxy Cluster Abell 1060 region Abell 3667 ARP 274 AGC 2344 AGC 2344 AGC 2744 AGC 2744 AM 2102-482 Draco triplet HCG-4 HCG 16 Hickson Compact Galaxy Group 21 Hickson’s Compact Galaxy Group 23 HCG 42 Hickson Compact Galaxy Group 88 HCG 88 annotated Hickson Compact Group 43 HCG 90 Hickson Compact Galaxy Group 91 PGC 74796 PGC 74796
