Scale issues? In Star Trek?
Well, the ship is pretty far away from Io by now, so that part is OK. I figure they would have done an emergency full impulse maneuver or something, to get well away from it as soon as it started. Jupiter could have been bigger, but I wanted the red spot recognizable.
That image of Jupiter I got was pretty washed out, but after a couple of modification layers above it, I really got the colors to pop out.