Kitt Peak National Observatory (KPNO)

Located 56 miles southwest of Tucson, AZ on the Tohono O'odham Reservation in the Sonoran Desert.

Operating telescopes
Mayall 4-meter, 2.1 meter, and Coudé Feed
Fact 1
Hosts the facilities of consortia which operate 19 optical telescopes and two radio telescopes
Fact 2
First national observatory of the U.S.
Fact 3
World's largest collection of optical telescopes
Fact 4
Administered by the NOAO and receives funding from the NSF under contract with the AURA.
KPNO's homepage