Rowe Mesa, 4:20 – 5:20 am MDT. Cloudless sky, no wind, fair transparency, very good seeing but sky brightened by 3rd quarter moon. Comet C/2020 F8 SWAN spotted low in east (Pisces), faint in binoculars, elongate fuzzy patch in DSLR wide-angle photo. Tail appeared short in moonlight and dawn brightening. Jupiter, Saturn, Mars lined up across southeastern sky, excellent viewing past dawn.