Open Cluster Archives
- The False Comet (NGC 6231 & CR 316) and NGC 6242
- Messier 6 - Butterfly Cluster
- Messier 7 - Ptolemy's Cluster
- Messier 8 - Lagoon Nebula
- Messier 11 - The Wild Duck Cluster
- Messier 16 (NGC 6611 and IC 4703) - The Eagle Nebula
- Messier 18
- Messier 21
- Messier 23
- Messier 25
- Messier 26
- Messier 29
- Messier 34
- Messier 35 and NGC 2158
- Messier 36
- Messier 37
- Messier 38 and NGC 1907
- Messier 39
- Messier 41
- Messier 44 - The Beehive Cluster
- Messier 45 - The Pleiades
- Messier 45 - The Pleiades - Naked Eye
- Messier 46 and NGC 2438
- Messier 47 and NGC 2423
- Messier 48
- Messier 50
- Messier 52
- Messier 67
- Messier 73
- Messier 93
- Messier 103
- NGC 654
- NGC 663
- NGC 869 and NGC 884 - The Double Cluster in Perseus
- NGC 1502 and Struve 485
- NGC 1647
- NGC 2244 and Sh 2-275 - The Rosette Nebula
- NGC 3372, Eta Carinae, and NGC 3293
- NGC 457 and NGC 436
- NGC 6520 and Barnard 86
- NGC 6866
- NGC 6910
- NGC 7062