Its Globular season, and there is plenty to choose from at the moment so here is my take on M22.
Cant pick out the small PN in the core though I know Mikes image from a few years ago managed to pick it up
M22 in Sagittarius
35 * 180 sec RGB
RC08, STL6303e and AP900 from Sydney.
Given that there is some conversation around glob colours this is pretty much straight out of the can, the key changes I made in my processing being to use the new Photometric colour calibration process in PI which pulls in data from G2V stars in the frame along with a masked stretch then a nudge in saturation along with a micro curve (not necessarily in that order)
Thanks for looking