Thanks - I actually took it every hour for 18 hours, and just picked the 5 that showed the greatest visual range (the door that window is in faces west, so there were quite a few sunset-tinged ones)

I may try to retake it, as that was taken several years ago with an old Sony Mavica :p - the camera I have now has about 10x the pixel resolution, so even if I have tripod-fail again it'll be easier to tidy up.