M56 - A Globular Cluster
From the author of Sizing Up The Universe
Click here for Hertzsprung-Russell diagram.
03:38 EDT Apr 21, 2007.
Starlight Express SXV-H9 on 10" RC at f/9.
L=11.5min, R=9min, G=8.5min, B=10.5min (unguided 30-second subexposures).
Log stretch, Unsharp mask.