On the night of August 15, 2021, a very rare alignment of Jupiter's moons occurred. On this night a triple transit on Jupiter with the moons Callisto, Ganymede and Europa in transit was visible from some parts of the world. After the triple transit there was very rare event when Ganymede occulted Europa followed by Ganymede eclipsing Europa!
Although I have tried my best to capture images of the planets the seeing at my location in Maryland is usually awful - and good seeing is an absolute 'must have' in planetary imaging. This event would have been one that I would have certainly tried for, but the weather conditions (clouds, go figure) nixed that.
However, Christopher Go, one of the handful of the best amateur planetary photographers, had excellent conditions at his location in the Philippines. He was able to capture the entire series of events with his 14" Celestron SCT.
Here is the NASA Astrophoto of the Day that he was awarded.
For a more complete review of Christopher's imaging, including this event, point your browser to his web page at http://astro.christone.net
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