So what do you do while you're collecting the data?
Serious (yet possibly silly) question.
What do you guys do while your camera is there busily filling up its little light wells? Do you take along a spare for visual, or are there other tasks that keep you busy in the field during an imaging session?
I sometimes set up my little refractor and do some visual. I definitely try to get in some shuteye while the camera is doing its own thing. Most of the clear nights just happen to be during the work week