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a day in the life of a sundial

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Date:19.07.2017 Time:7:50 - 16:00 CEST
Exposure:20 s interval Field:~180o diagonal
Camera:Nikon D200 Optics:10.5 mm, f/8.0
Place:Progymnasium Rosenfeld, Southern Germany Photos:Till Credner

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The Astronomy Group of the Progymnasium Rosenfeld made a human sundial and time lapse for an entire school day. Each person should stay for ten minutes being the stick of a sundial. One image was taken every 20 s from about 8 am until 4 pm. Thanks to the 38 participants for all their patience! It was fun and also very instructive. The dial was calculated for this special date. Also watch the clock at the tower and compare it to the sundial! There will be a repetition next winter to compare the length of the day and the suns height.

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