Tuscon’s 12-meter Telescope
In 1968, a 36-foot telescope was one of the first major millimeter-wave radio telescope, and it was run on Kitt Peak in Arizona. Its main purpose was to hunt for the chemistry of space, and in many ways is considered astrochemistry’s first workhorse. This photo was taken in January of 1984 after an 18-month hiatus in observing, during which it got a higher-accuracy surface. After this upgrade, the telescope became known as the 12-meter.