An astronomer’s startling discovery … at the bottom of a cider can - IDEX Health & ScienceIDEX Health & Science

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    An astronomer’s startling discovery … at the bottom of a cider can

    Article obtained from Photonics RSS Feed.

    In September 2020, David Campbell, principal technical officer of astronomy at the University of Hertfordshire in England, found a discarded Kopparberg cider can atop one of the telescopes at the university’s Bayfordbury Observatory. It could have been an innocuous, if oddly placed, piece of pollution. When Campbell discovered a sheet of photographic paper inside the can, he suspected it may be something much more than random detritus. In fact, it was something for the record books.

    The can was a roughly fashioned camera that had been taking in light through a small hole opposite the paper. More notably, however, it had been collecting this light for eight years and one month, to produce the longest known photographic exposure…

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    Apr, 05 2021 |

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