Date Posted: 9/23/2021
Date Taken: 7/3/2021
Scope: Planewave CDK 12.5 f/8, 2541mm
Camera: SBIG STL-11000 with Astrodon Tru-Balance E-Series Gen2 filters
Temp: -15C, -12C, -15C
Mount: Losmandy Titan
Guiding: On-axis via ONAG-XM and SX UltraStar at 2541mm. FocusLock real-time focus for focusing.
Exposure: LRGB, 42:20:20:21. Luminance 2min unbinned; RGB 1min binned 2x2.

Calibrated and Stacked with CCDStack2. Processed with CS4.

This is the first Globular Cluster where I started to pay closer attention to the DDP values, to keep from saturating the core. The default values in both Maxim and CCDStack were too aggressive.