SV152 Refractor @ f/6
Riccardi 0.75x Reducer
Atik EFW2 Filter Wheel Astrodon RGB/OIII Filters Mach1GTO CP3
Total Exp=7hrs 15min
This is a quick image of a nearly perfectly circular planetary nebula. The light emitted mostly resides in the green/blue spectrum so I used an OIII filter to bring out the nebula. I used 100% OIII in blue and 75% OIII in green.