I went to Bamburgh Castle with my friend Mark to get some good photos of the stars.  The conditions were great, no moon, no city light pollution and -3 degrees C.  While I was there I decided to create a short (very) time lapse of the castle, sea and stars.  I let my 40D do all the work while we sat in the car trying to stay warm.

Camera Settings

ISO: 1250
Aperture: f4.0
Shutter: 30 seconds
Format: RAW + JPG

Although I had my computer for remote shooting it was far easy to just use my cable release. To do this in three easy steps:

1. Simply put the camera into continuous shooting mode as well as setting it up for the right exposure.

2. Take a shot and lock the button on the cable release so the button remains down.

3. Once that shot is taken, because the cable release button is still pressed (as the button is locked down) and the camera is in continuous shooting, then another shot is taken, and so on until you stop it.

Below is my result after about 25 minutes of exposures.  Hopefully I can get back there when I have more time to be able to make a video that lasts a little longer than 2 seconds