M13- Hercules Globular Cluster Posted on June 16, 2024 By Cosmic Ken Deep Space Objects, Star Clusters 25,0000 Lightyears away. M13 Hercules Globular Cluster is a bright cluster of over 300,000 stars. I took this picture on June 15, 2024. I used my ZWO ASI2600MC, 41 2 minute subs from 11PM through Midnight. I had the gain set at 0.