Halifax, we had a problem

I tried to image 11 LMi again. I had decided to shoot faster than I did on 5 May '18, twice as fast. Was trying to route out the faint companion star.

But something went terribly wrong...

Luminance only, ½ second subexposures, 20 stacked shots. FITS Liberator, GIMP. North is up; east is left.

Looks like one of my light painting images...