Nearly didn't bother to attempt imaging Lemmon tonight, as incessant cloud made getting data very difficult... anyway, I managed to get about 1/2 an hour's worth of this pretty comet.
Set the PME to the same rate as the comet, i.e literally set it to Lemmon rate, for 9 x 2 minute unguided luminance frames, then did RGB.
The median combine still shows a few ghost-stars....but I didn't want to process them out- as the faint tail has some delightful, and quite long, structure.
The link is here