[EricH]

Using a GoPro HD HERO. Yes, it has a time-lapse mode (though not quite as fast as I'd like--but my Canon Powershot has a 10-shot-max timed mode, which verified that the speed I'll be getting should be fast enough when I checked a couple days ago).

The 25-foot distance, BTW, is not horizontal. It's vertical. (No catwalks or anything like that--I might be able to use a lift, but that remains to be seen.) There's maybe one place that I might be able to put a laptop at that level, but that would definitely require the cord. I can place/attach a camera up there, though. There's ladders around.