Nice images, but I think you are correct, your focus might have been slightly off. 3 minutes is fine for Jupiter, AS!3 is more than capable of correcting any slight rotation effects that occur during that time (I use 3 minutes for Jupiter also).
I take my cues on this from Darryl (aka Kokatha Man) on this matter, you can see his images on his website below. He strongly advocates 3 minutes for videos taken with a colour camera, and if 3 minutes is good enough for him, then who am I to argue?
http://momilika.net/WebPages/Jupiter2019Pics.htm
Andrew