Solargraphic Analemmas

nasa image
For the northern hemisphere June 21 used to be the summer season solstice, the Sun reaching its northernmost declination for the year. That will perchance establish it at the live of every of those three make a selection-8 curves, or analemmas, because it passed by the sunlight hours sky over the village of Proboszczow, Poland. No sequence of digital exposures used to be extinct to originate the basic image though. Utilizing a pinhole digicam mounted to face south for the length of the duration June 26, 2021 to June 26, 2022, the image used to be formed straight on a single sheet of photographic paper, a formula ceaselessly known as solargraphy. The three analemmas are the implications of briefly exposing the relate paper by the pinhole on daily basis at 11: 00, 12: 00, and 13: 00 CET. Groups of dashed traces on the perimeters present partial tracks of the Sun from day-to-day exposures made every 15 minutes. Over the year-long solargraphic relate opportunity clouds blocking off the Sun for the length of the pinhole exposures created the darkish gaps.

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