Sh2-308 Dolphin Nebula HSO narrowband image in modified Hubble III palette, QHY600M, 20.3h integration time, excellent seeing (243 subs of 253 used), remote telescope in Australia from TL network. Takahashi FSQ-106ED 530mm f/5.0 · HSO · ZWO ASI6200MM Pro (mono cooled) · 20h 18min · 244 subs · Australia (remote) · 06h 54m 13.0s / -23° 55' 41.9" · 2024-12-12