Castle in the backgarden

The house I am staying in has a turret or tower, probably part of the old town wall, in the back garden. As tonight has been pretty clear, I decided to try to improve my star trails.

8 repetitions of 10 x 15" images meant alot of processing time. This image is a bit noisy on the internet, but I'm sure if I looked after it I could make it look better :)