GSO 305 mm - Canon Rebel XT - iso 800
Multi-process:
group 1: nebula background - 5 x 90 sec
group 2: nebula center - 5 x 60 sec
group 3: nebula center trapesium - 20 x 20 sec
group 4: trapesium - 20 x 10 sec
Yes, I know. Much sharp, and therefore noise, because of bad focus. Sorry, it was my fault.
