Saturation is done high for evidence the internal arms usually unseen in other images. In the corner there's reflection from the Street lamps that enter in the telescope. I shot with 3 lamps at 20 mt. My sky is around 19.9 / 21.1 depends on who turn on the lights
For the AO .. i'm using it because i can catch the same details than the Others AP using bigger scope . When it work , for sure
All the best,
Leo