Jupiter will continue to climb even higher in my skies this year compared to last. Jupiter reached its summer solstice in the northern hemisphere two years ago. Since the four major satellites revolve in Jupiter's equatorial plane, this means that shadow transits are moving north again.
On 16th March 2014, there was a double shadow transit by Io and Ganymede. This is a relatively rare event and I was lucky that my skies were fairly clear for the start of the transit. Ganymede can be seen to the right of the planet; Io was itself in transit and I was unable to resolve it except possibly in the last picture where it is a faint white dot at the end of the southern equatorial belt. I had intended to take a picture after Io emerged from transit, but the clouds decided otherwise. Below are four pictures with the times at which they were taken in UT. The first picture was taken before the shadow transits began. The shadow of Ganymede is the lower of the two, and you can see that the shadow of Io moved more quickly than that of Ganymede because Io is closer to Jupiter than is Ganymede.
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