KPNO 1.3-meter (50 inch)
About this image
The interior of the 50-inch (1.3-meter) telescope at the Kitt Peak National Observatory near Tucson, Arizona. The installed instrument is the (long retired) photo-electric photometer. Photograph by Mark Hanna (probably in May of 1987).
Minimum credit line: Mark Hanna/NOAO/AURA/NSF
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