Arcturus/α Boo 16Bootis Arcturus in sandstorm Color camera image, ASI6200MC PRO, 20x 15" (5 min) integration time (from 34min). The sky was yellow of desert dust coming from the African Sahara. This caused the huge halo. Celestron RASA36 790mm f/2.2 · RGGB · ZWO ASI6200MC Pro (color cooled) · 5 min · 20 subs · Freyung Private Observatory, Germany · 14h 15m 39.6s / +19° 10' 55.2" · 2024-04-07
