It's arrived.

New to me a Nikon 1000mm f 11 catadioptric (mirror ) lens. I've no idea how old it is, they were made from 1976 to 2005.
Pros. 1000mm, inexpensive, fairly light
Cons. aperture fixed at f11, manual focus, not very sharp, best used with a tripod.
Extra; What I was looking at.