45 Days in the Sun

Astronomy Picture of the Day · 2015-02-21 · NASA (public domain)

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45 Days in the Sun — APOD for 2015-02-21

From January 11 to February 25 2013, a pinhole camera sat in a field near Budapest, Hungary, planet Earth to create this intriguing solargraph . And for 45 days, an old Antonov An-2 biplane stood still while the Sun rose and set. The camera's continuous exposure began about 20 days after the northern hemispere's winter solstice , so each day the Sun's trail arcs steadily higher through the sky. These days in the Sun were recorded on a piece of black and white photosensitive paper tucked in to the simple plastic film container. The long exposure produced a visible color image on the paper that was then digitally scanned. Of course, cloudy days left gaps in the solargraph's Sun trails .

Astronomy Picture of the Day for 2015-02-21 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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