Thanks for the challenge Andy - I wouldn't have known about it without your post.
Rather than a top class imager, I'm more economy class, but did at least manage to capture the events from Brisbane.
Seeing was good to start with, but got a lot worse as Jupiter got lower in the sky.
In the animation you can see how Io is brighter than Jupiter's surface brightness when it's near Jupiter's limbs.
The still images are more or less the times from CalSky. The satellites are as predicted, but the GRS seems to about an hour fast (30 deg longitude) in CalSky.
With a RC8, QHY5L-II colour, and Tal x3 barlow for FL 4.9m, so 0.16''/px imaging. Processed with Autostakkert and Registax wavelets.
A bit larger animation
here ...