M92, IMO, is the must beautiful globular cluster. It’s beauty surpasses even the Hercules Cluster (Messier 13). In this post is a guide on processing M92 in Pixinsight. There is also an accompanying video of me shooting this outside with my Celestron Edge HD 8″.
M5
Over 13 billion years old and 25,000 light years away, M5 is one of the oldest astronomy objects in our universe.