I know of one: the U.S. Naval Observatory near Flagstaff, Arizona. I lived in Flagstaff in 1979. I knew the astronomer and visited him at the observatory at nig

I know of one: the U.S. Naval Observatory near Flagstaff, Arizona. I lived in Flagstaff in 1979. I knew the astronomer and visited him at the observatory at night. He showed me a terminal running Forth that could control the telescope. I’m sure there were many other sites.