M13 ← Previous Next → M13 Hercules Cluster M13 Hercules Cluster 22-23 May 2015 L: 40x1min R: 30x20sec (binned 2×2) G: 30x20sec (binned 2×2) B: 30x20sec (binned 2×2) Atik 314L+ RC 203mm/1625mm