Greg, you can use your new S1. Set your ISO to 400, and go into manual mode. Turn your aperture (f-stop) to the smallest number possible, in your case, 2.8. Then, turn your shutter speed to 15 seconds, which is the longest that camera goes. It should look like 15" on your display. Mount it to a tripod, and make sure you look in your instruction book and manually set the focus to infinity. That step is particularly important because small digicams do NOT focus in the dark. Once you complete these steps, push the shutter button, and let it go! If 15 seconds is too long, try 10 seconds and 5 seconds. They will look like 10" and 5". Let me know if I can answer any other questions!