A short 6 second time-lapse video composed of some 30 shots per second of video. However with it being pitch dark in the middle of the night each shot had a 30 second exposure. So, of course, the sky itself moving can be seen over the course of the shoot.
30 frames per second times 30 seconds exposure each times 6 seconds of footage totals out at 90 minutes of total exposure time and the total time for capturing all the shots was over 2 hours! But it worked out great!