If you want to record stuff like this, rent a high quality HD camcorder that has low light capacity. Most shops that have rental gear can rent you something far better than what you might have on your own or could borrow from a friend.

I'm going to give this a shot as I have a high-end consumer HD camcorder (Canon Vixia HF-G10) that will record high quality video in as low as something like 0.1 lux. That "magic moment" is something that not a whole lot of young people into photography have experienced, and I think it's a strong selling point for analog. You just don't get that "wow" watching a print spool out of an inkjet printer. I'll post my results if it works, and respond in the negative if it doesn't.