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Who knew there were so many moving parts to operate a telescope? This is a great behind the scenes video of what really takes place up at the summit of Mauna Kea in Hawaii. About 125 people work full-time at the Keck Observatory to operate the two ten-meter telescopes. The intricate fine-tuning and elaborate attention to detail is amazing. “Keeping those telescopes on-sky every night is the summit crew of the Operations Department. This video is dedicated to the guys of the Keck daycrew who make it possible,” wrote Keck engineer Andrew Cooper, who compiled this unique and must-watch video. He details the techniques he used at his Vimeo page for this video.