https://www.tdo.space/2015/07/27/messier-15/
Name: Messier 15- Globular Cluster
Constellation: Pegasus
Imaged: November 2012
Location: RMSP, Babylon,NY
Telescope: ES127 ED APO F7.5
Mount: Celestron Cgemdx
Camera: Canon Rebel XT
Details: (12) 30 second jpeg sub-frames (jpeg), combined in Deep Sky Stacker. I started working with levels and curves in Photoshop.