My whole night of shooting the Orion Nebula got wrecked by a neighbor's floodlight
I was set up in my backyard in Boise, about two hours into a 30-shot stack for M42. Out of nowhere, this bright white security light from the house behind me flicked on and just stayed on, washing out my whole frame. I had to pack up my whole rig, drive 45 minutes out to a dark sky site I knew near Lucky Peak, and start all over from scratch. Has anyone else had a planned session completely ruined by sudden light pollution like that?