Extended runs are generally derotated using WinJupos. This is why you might see an image with 20 minutes posted. That might be 6 x 3 minutes captures on Jupiter or 3 x 6 minutes on Mars. Each data set is stacked first, then it derotated and then final processing can occur.
An advantage of doing this is that you get better definition detail near the limbs and less smearing.
Winjupos processing has definitely changed the outcomes of a lot of planetary images in the last 12 years. Seeing is still king but average seeing can produce very good images now using WinJupos.
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