Globular Star Cluster M-55 (NGC 6809) in Sagittarius

Globular Cluster, M-55

This is a 10-minute exposure taken with an SBIG STL-1301E CCD camera through Kopernik's 20 inch F/8.1 telescope. The field of view is about 15 x 15 arc minutes.

Description of M-55 in The Deep Sky Field Guide to Uranometria 2000 (c) Willmann-Bell, Inc.: