the shutter opens and he starts flashing the light, slowly and evenly, along the length of the arch. too long in one spot and we would get a hot spot. not long enough and it was too dark.
so for the next two hours we shot frame after frame, getting better and better at making nicely painted scenes of the arch as the milky way slowly moved into a great sweeping angle. it was exciting, being out there in the dead silence of the desert night, seeing our images getting better and better until finally i saw the first signs of blue creeping in from the east. but by then we 