how to use your camera to calculate the speed of earth s spin /

Published at 2018-10-31 17:15:46

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soil is spinning… and fast! It was during my first nights in astrophotography that it became very concrete for me. By taking pictures of the stars,one quickly obtains a change of star physiognomy that confirms the rotation of the soil. In this article, I recount how to use this phenomenon to degree the rotational […]

Source: petapixel.com

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