The Vatican Advanced Technology Telescope in Arizona is a multi-million dollar astronomical research complex paid for by private donations. It consists of two parts: the Alice P. Lennon Telescope and the Thomas J. Bannan Astrophysics Facility. The telescope's 1.8-meter (72 inch), f/l.0 mirror was fabricated at the Steward Observatory Mirror Laboratory using revolutionary spin-casting and polishing technologies that are now making giant telescopes possible at considerable cost savings. The Vatican telescope was the first optical-infrared instrument on Mt. Graham and served as the prototype for the Large Binocular Telescope (LBT). Together, the VATT and LBT attract the world's leading astronomers and astrophysicists.