Hello, There was a time, when apparently Jupiter's moons did not visible in any optical telescope. Try January 2 1991, around 20:46 UT. The Ciel shows only Callisto outside from disk, Io in front of, Europa and Ganymede behind of Jupiter's disk. Callisto eclipse starts at 20:42.5 UT, until 21:52.8 UT, there was no visible Jupiter's moons in any optical telescope. Ciel unable to shows Jupiter moon's eclipse.
Thanks, Attila --- In [email protected], "kochab_1" <kocha...@...> wrote: > > Last night I was using Cartes du Ciel (V3) to figure out the time that > Jupiter would be moonless. However, increasing the time increments and > watching Jupiter and its moons rotate, it never became moonless. One moon > remained visible and the other moons started to become visible before that > one moon had a chance to disappear. I ran the same cycle on CALSky and > Jupiter did become moonless. I am using the same location information in > CALSky as I do in Carte du Ciel. Is there an error in the program and can it > be corrected? I have also noticed that the GRS transit times appear to be off > as well as compared to CALSky. Any comments or suggestions would be greatly > appreciated. > > Thanks! > Travis >
