Object Type | Open Cluster |
Constellation | Perseus |
Magnitude | 5.2 |
Size | 25.0' x 25.0' |
M 34 is a small, moderately compact cluster of stars in Perseus, about 5 degrees west and a little north of Algol. In the first image below, the bright star is gamma andromedae, which is about 10 degrees west of M 34. About halfway between this star and M 34, is a tiny sliver of light. This is the galaxy NGC 891. The large cluster at the bottom right is NGC 752.
The brightest members of the cluster are blue B and A type main sequence stars, with one orange giant visible on the northern edge of the cluster. Being small, it is a good object for the telescope.