This comet, then in Ursa Major, was breaking up - at least 3 sections are seen in the enlargement.
Astro-modded EOS 600D,12” Newtonian reflector 30 x 60-sec unguided exposures at ISO 3200 f/4;
frames stacked on the comet in Deep Sky Stacker software (hence the trailed stars), then processed to reduce noise and increase contrast.
full exif