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February the 8th, one more year...

Every year at the same date the Sun sets exactly behind the domes of the Cerro Tololo Interamerican Observatory (CTIO) as seen from the Pangue Observatory, and just every year we try to take the shot of the event (check our previous posts...)

Indeed this is nice way -among many others -to visualize the high accuracy of the Newton's laws of gravitation!

Photo: Cristian Valenzuela (Observatorio del Pangue) - February, 8th, 2015
Camera: Canon EOS 60D at prime focus of Orion 80mm refractor