Not sure I'm going to bother with derotating these data. Here's the reference frame in any case. 13% of 15,000 frame refernce. This is the center 15,000 frames of a 75,600 frame ser. 150% resize and increased canvas size so it's big enough to at least see. Mars was just below 20 degrees at time of capture and sitting right above my nearest neighbors roof. It will be several weeks before I can get Mars into a good location relative to my observatory to worry about image quality just yet. More critical for me to get ready for Titan transits.