Io and Europa's close encounter

Here's an example of where reality can get close to the simulation. I got some good seeing, and with a decent camera (a ZWO ASI) I got a decent video-capture of Jupiter's moons Io and Europa through my 8" SCT from a city backyard, as they passed by each other, at one point just overlapping. The image is in two parts, and explains itself. The angles are a bit different.