Registax can be used to improve your images Registax will analyse, align, and stack many images, typically from a video file (.AVI) captured using a webcam, and process them into one image. The process removes the effects of atmospheric turbulence and will increase the contrast in the image. Registax is a free download.
Registax 6 Saturn processing
How to use registax 6
RegiStax 6 - Astrophotography Saturn - Testing new version v6