The Kitt Peak National Observatory (KPNO) in 1960. Kitt Peak is part of the Quinlan Mountains in the Arizona-Sonoran Desert southwest of Tucson. Shown here are the Mayall 4-m telescope (right) and the Bok (90 in) telescope (left).

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The Kitt Peak National Observatory (KPNO) in 1960. Kitt Peak is part of the Quinlan Mountains in the Arizona-Sonoran Desert southwest of Tucson. Shown here are the Mayall 4-m telescope (right) and the Bok (90 in) telescope (left).

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Keywords: 1960s, america, american, arizona, astronomical, astronomy, bok, bw, historic, historical, history, kitt, kpno, mayall, mountains, national, observatory, peak, quinlan, science, states, telescope, united, usa