To me, an F seems like the best choice for shooting star trails, or long exposures in general. It's about as straightforward as it gets. No batteries to run out. Just put the camera on T and shoot (or use B and a locking cable release). They are also cheap for the amount of quality you get.

The problem with my suggestion is that I am not up to speed on the various Nikon lens designations, so I don't know if an AF-D lens has an aperture ring or not. If not, please ignore everything I've said...