Date Taken: 12/15/2017, 12/16/2017, 1/14/2018, 1/15/2018
Scope: Planewave CDK 12.5 f/8, 2541mm
Camera: SBIG STL-11000 with Astrodon Tru-Balance E-Series Gen2 filters
Temp: -15C
Mount: Losmandy Titan
Guiding: On-axis via ONAG-XM and SX UltraStar at 2541mm; FocusLock real-time focus software.
Exposure: LRGB 255:120:130:130 All subs 5 min. Luminance unbinned, RGB binned 2x2.
Calibrated and Stacked with CCDStack2; RGB combine and DDP with MaximDL. Processed with CS4.
I made 2 significant changes in processing on this image. I used Mean combine for all channels (previously I used Sum for Lum and Median for all others). Mean seems to be less noisy than Median. I also used high pass filter instead of smart sharpen in PS for sharpening.It seemed to do a better job.

I found this one difficult to process, because settings that seemed best for one galaxy weren't necessarily the best for the other.