Asteria — interactive night sky map
Messier 34 is a open cluster in the constellation Perseus with an apparent magnitude of 5.2, spanning about 23 arcminutes. Under dark skies it can be spotted with the naked eye.
It is best placed in the evening sky around October. It is visible from the whole northern hemisphere and from southern latitudes down to about 47°S. It is circumpolar (never sets) north of latitude 47°N.