Mike Dworetsky wrote:

Longer ago than I wish to admit, I was a postdoc at Mt Wilson and Palomar
and there was an interesting 1/10 scale working model of the Palomar 200-in
on the roof at Cal Tech. I used it a few times. I recall that it was
originally built to test mechanical ideas used in the mounting of the big
scope (probably c. 1935-40).

Does anyone know if it is still there and in a usable state? Light
pollution was pretty fierce and LA basin air pollution did not help either,
but you could get a decent view of Saturn or Jupiter with it.

It's not there now but I don't know where it is.

Mike Simmons