I have just returned from a very quick observation session of planet Jupiter and its moons at 00:30 (August 16). After so many years, I had to see it. It had rained all day, is partially clouded and the seeing is poor. The telescope (80mm refractor) was still warm as I used it immediately after moving it from indoor to the 14 ℃ outdoor, so the quick guess of 4/10 isn't too accurate. I observed Jupiter and its moons at 32x and 86x. The seeing prevented the use of the barlow at 171x. The magnification of 86x provided the best balance between contrast, image size and stability.
Three of Jupiter's moons were visible. Europa & Callisto on one side and Ganymede on the other side. Also visible was the obvious shadow of a moon crossing Jupiter, Io's. I didn't see Io transit though. Jupiter's cloud bands NEB, SEB and STB were clearly visible as well.
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