A rare opportunity to capture the transit of Jupiters Great Red Spot occured April 2016, when the transit happened on an evening with clear skies and excellent seeing. This image shows the spot crossing the planet with the moon Io close by.
Details
2016-04-07 at the Victoria Centre Observatory.
C14 scope with modified Canon T3i camera operating in cropped video mode with Backyard EOS control.
This capture used the best 450 of 500 frames captured and was processed in Registax with additonal high pass sharpening in photoshop.