Object Type | Open Cluster |
Constellation | Cassopeia |
Magnitude | 6.7 |
Size | 25.0' x 25.0' |
NGC 7789 is number 398 in the Herschel 400 list. This is a very large open cluster in Casseopia. Although the total intergrated magnitude of the cluster is 6.7, the individual stars are around 10th magnitude or fainter, so a telescope is required for a good view. The cluster is so large that only the central regions are visible in the above image.