M53 - Globular Cluster in Coma Berenices
Date Taken: 3/5/2017
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: SSAG, Celestron 80mm guide scope, 600mm.
Exposure: LRGB 52:28:36:28 All subs 2 min each. Luminance unbinned, RGB binned 2x2.
Calibrated and Stacked with CCDStack2; RGB combine and DDP with MaximDL. Processed with CS4.
This was taken on the same night as M10, while the moon was still high in the sky. I did not re-shoot flats for this image, and the moonglow with older flats resulted in terrible gradients on all 4 filters. It was a pain to process, and I couldn't stretch it that much, so I lost some detail.