Mayall Telescope

Located below the summit of Kitt Peak, at 6875 feet. Can be seen from over 50 miles away.

Mayall
Telescope
4-meter (158 inch)
First light
February 27, 1973
Fact
Once one of the largest optical telescopes in the world.
Science highlights
Observation of the rotation curves of distant galaxies in order to determine the role of dark matter in the universe.
Helped to establish the structure of elliptical galaxies.
Website
Mayall's homepage