M42_2_107_3

Skywatcher DOB GOTO 12" F3.65

Ackermann 2in coma corrector/ reducer 0.73

L:ASI294MM PRO gain390 -0℃ 2sec × 107 QBP Filter

RGB：ASI294MC PRO gain390 -10℃ 10sec × 41 UV-IR Filter

Done