The winter sky viewed from Castle Hill. Annotated.

(click on the picture for a large version in which you can read the labels)

I've wanted to do this for ages, but never managed to get a set of photos without gaps in to make the panorama. I now have a ridiculously wide-angle lens (12mm), with which you only need to take thirteen pictures; I can manage to take thirteen pictures without making a mistake, and here's the result. 20 second exposures, f/4, ISO 1000 on a D90.

Castle Hill has probably the clearest horizon in Cambridge, apart from the tree to the north, but Cambridge is quite brightly lit. You can see Shire Hall (obviously), New Hall, the University Library, King's Chapel and the tower of St John's.