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How to Capture the Sun in a Beer Can

Wired: This sun-streaked image comes from the easiest, yet most time-intensive DIY astrophotography project ever: solargraphy.

Solargraphs trace the seasons by exposing a sheet of photosensitive paper to sunlight for up to a year. The bright arches in this image mark the sun’s path across the sky in Middleburg, the Netherlands, from the summer solstice to the winter solstice.

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