Standard 50mm F1.8 Nikkor is your best bet. Use a piece of tape to lock the lens at infinity. A heavy duty tripod with a good lockable head and maybe some sand bags. If you use a nice quality locking cable release and a piece of card in front of the lens you don't need mirror lock:just set the speed to B with the card over the lens, lock the shutter open and then remove the card. Try 75 minutes at f 5.6 for a clear sky beginning 2 hours after sundown facing North using 400Asa film . If you are shooting during a full moon you may pick up lunar illumination. Aircraft will also leave trails.
Originally Posted by Rol_Lei Nut