Back M13Great Cluster in Hercules Click to display the full resolution Object InfoTypeGlobular ClusterConstellationHerculesDistance25,100 ly Capture DetailsDateMay 21, 2025LocationDescanso, CAExposureLum 12x5, R 3x5, G 3x5, B 3x5 (bin 1x1) EquipmentOpticsDSI RC10C Corrected RC AstrographFocal Length1867mm @f/7.3MountAstro-Physics 1200GTOCameraFLI ML-16200FocuserBuilt-in Secondary FocuserFiltersAstrodon Gen 2 LRGBSoftwareNINA, PixInsight, Photoshop