The Bubble Nebula from SRO with the 16" RCOS and AP1600 GTO with Encoders. All subs were unguided. SBIG 16803
Ha03S2 with 20-25 20min subs each.
This is two frames capturing the bottom of the Cave Nebula and some very cool dusty stuff underneath.
Ha O3 image with 20Xha 30min and 30XO3 at 30min