Brule Lake Star Trails and Northern lights. I photographed this amazing image one night a few years ago on the shore of Brule Lake in the BWCA. This is a four and a half hour exposure, believe it or not! It was taken with a Mamiya universal film camera. I set the camera on a tripod and tripped the shutter with a cable release and went and laid down in my car. I woke up four hours later and tripped the shutter as dusk started to show on the horizon, and went back to bed. Photographed with Fuji 100 speed negative film.