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Some of several observatory buildings at the Kitt Peak National Observatory in the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation near Tucson, Arizona.
Some of several observatory buildings at the Kitt Peak National Observatory in the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation near Tucson, Arizona.
With 22 optical and two radio telescopes, it is the largest, most diverse gathering of astronomical instruments in the northern hemisphere. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally enhanced by rawpixel.
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