While I was up at Uluru one session I wanted to do was Uluru with star trails. I started with a 60 sec shot 800 iso to get a starting point then 6 x 5 min and 5 x 10 min subs. It was still quite warm at night so a few hot pixels are about.
It was my first attempt at doing anything like this.
I had to load to facebook to bring the size down quite a lot.