NGC 7789 is a rich open cluster in Cassiopeia. Small scopes may have some difficulty resolving this cluster, but the view in six-inch and larger scopes is truly impressive. POSS/DSS photo.

This cluster is one of the best in the autumn sky. Small scopes will probably show only a haze, but six-inch or larger scopes should fully resolve the cluster. Roughly 15 arc-minutes across, this cluster contains over 500 likely members, at least 100 of which should be visible in an eight-inch scope. The stars are mostly faint, giving the cluster a "stardust" appearance and are distributed somewhat unevenly, with dark lanes cutting through the mass of stars.

How to get there:

NGC 7789 lies three degrees southwest of Beta Cassiopeiae.

Finder chart for NGC 7789