Ballard wrote:
The first shot of Jupiter was taken around 10:30PM (July 12th 2019). The second one was taken around 12:30AM (July 13 2019) 2 hours later. Note how the moons have moved and the red spot has rotated into view. The moon closer to the planet in the first image is Io, in the second picture the moon closer to the planet is Europa. Both of these shots where made by stacking frames from 4K video taken though a 11" Schmitt Cassegrain telescope.