First link is a single 1/400s exposure at ISO 100.
Below that is a manual stack (couldn't get Registax to work on jpeg's) of 3 frames each at 3 different exposures - total 10 frames combined in Photoshop using layers. One exposure setting for the moon, one for Jupiter and one for Jupiter's moons (4 are visible if you zoom).
I also added some saturation to Jupiter manually to bring out the color - which was faint but there.
Comments always welcome!