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Old 06-06-2018, 03:21 AM
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mental4astro (Alexander)
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mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,979
The weird shape of the shadow transit and the Moon is due to a vibration in the scope that's occurred during exposure. Nothing weird actually going on. You will notice that the left edge of Jupiter is soft, but the right side is distinctly blurred. The soft edge is to be expected, but the blur is also an artifact of the vibration seen in Io and its shadow transit.
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