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Night sky over Elan Valley

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Far from major towns and cities, the Elan Valley in mid Wales is an International Dark Sky Park. I photographed the night sky over Garreg-ddu reservoir, lighting the Victorian Foel Tower (a water intake) with my hand torch to provide a foreground. Looking due north at midnight, the W shaped constellation of Cassiopeia lies over the tower, with the faint band of the Milky Way running through it. The water was sufficiently still to reflect the brighter stars, though slight ripples during my 20 second exposure have turned the reflected stars into short streaks.