Galaxy Clusters Abell S0636 NGC 3312 ARP 274 AGC 2344 AGC 2344 AGC 2744 AGC 2744 Draco triplet HCG 42 Hickson Compact Galaxy Group 88 Hickson Compact Group 43 HCG 88 annotated Hickson Compact Galaxy Group 90 Hickson Compact Galaxy Group 91 PGC 74796 PGC 74796