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Delphi Analemma

By: Anthony Ayiomamitis

 

Region: Europe

Site: Delphi - Greece

Date: 2001

As seen on Astronomy Picture of the Day and National Geographic News one full year of solar motion above Tholos (360-350 BC) at Ancient Delphi, a World Heritage site in Greece. The very difficult task of capturing this year-long phenomenon in a single frame has been achieved only some 20 times. An analemma is the figure "8" loop that results when one observes the position of the sun at the same time of day over the course of a year. The 23.5 tilt of the earth's axis of rotation and its elliptical orbit about the sun result in the apparent change in the sun's location in the sky when observed at the same location at the same time of day over a year's time. Anthony Ayiomamitis/Perseus.gr.

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