When she was working on her master's in fine art at the University of Hertfordshire, Regina Valkenborgh made a pinhole camera out of a beer can. She attached it to a telescope at the university's observatory, and then forgot about it. That was in 2012. This year, the can was removed by David Campbell, technical officer at the observatory. Inside was photographic paper that had recorded the path of the sun 2,953 times! It had been exposed for eight years and one month.
Regina Valkenborgh said: “It was a stroke of luck that the picture was left untouched, to be saved by David after all these years. I had tried this technique a couple of times at the Observatory before, but the photographs were often ruined by moisture and the photographic paper curled up. I hadn’t intended to capture an exposure for this length of time and to my surprise, it had survived. It could be one of, if not the, longest exposures in existence.”
-via Kottke
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