I did see Ganymede lose it prominence compared to the other moons this morning, as Europa cast its shadow upon it. It was a difficult observation through cloud.
Though not as satisfactory as I would have liked, it was much better than 25 & 26th May, when all I saw was thick cloud.
On the 12th June, Ganymede eclipses Io and this appears to be the best one for the rest of the year in Oz as far as diming goes.
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