NGC1491 Bright Nebula in Perseus HGB (Ha-Green-Blue) image, ASI6200MM PRO, 60s-10s-10s Subs, 3.2h integration time, 501 of 714 subs used, very good to good seeing (1.2" - 1.5"), two nights, half moon. Planewave CDK17 1940mm f/4.5 (0.66× Red.) · HGB · ZWO ASI6200MM Pro (mono cooled) · 1h 24min (raw total) · 66 subs · Freyung Private Observatory, Germany · 04h 03m 15.9s / +51° 18' 54.0" · 2026-01-07