A hypnotising view of Paranal in #Chile!
Yet the sky is not revolving around the tip of one of our Auxiliary Telescopes. This illusion is caused by the almost perfect alignment with the southern celestial pole, around which stars seem to trail due to Earth's rotation.
Capturing these circular star trails is no easy task: a slight misalignment can completely ruin the outcome! 馃槻
Read more: https://www.eso.org/public/images/potw2546a/
馃摲 O. Castillo/ESO
