Here are some of my star trail notes:
Battery independent Nikon F2
(I would not hesitate using a Nikon FM series camera if I had one)
Normal to wide (50mm to fisheye)
Locking cable release
Stiff black felt square (5 ½ x 5 ½ inch) to block unwanted light on lens from motor vehicles and air craft.
ISO 100; f/8; 30 minutes plus film reciprocity