ACO2151 Hercules Galaxy Cluster LRGB image, ASI6200MM PRO, 1.8h integration time (387 Subs selected from 1507 Subs, 10s Luma and 20s color, ultrashort exposures), very good to excellent seeing (1.0" - 1.2"), moon 20%, three nights. Planewave CDK17 2939mm f/6.8 · LRGB · ZWO ASI6200MM Pro (mono cooled) · 1h 48min · 1507 subs · Freyung Private Observatory, Germany · 16h 05m 15.0s / +17° 44' 55.0" · 2025-03-04
