EUROPEAN SOUTHERN OBSERVATORY / Y. BELETSKY / SCIENCE PHOTO LIBRARY EUROPEAN SOUTHERN OBSERVATORY / Y. BELETSKY / SCIENCE PHOTO LIBRARY
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Laser Guide Star Facility at the European Southern Observatory's VLT (Very Large Telescope), Cerro Paranal, Chile. The laser (PARSEC) produces this orange beam to create a guide star in the atmosphere. This facility began operating on 28 January 2006, in the VLT's Yepun telescope (centre). By focusing on the artificial guide star, VLT telescopes are calibrated to remove the effects of the atmosphere on observations, a process known as adaptive optics. The beam is pointing directly upwards at the galactic centre of the Milky Way, the band of stars crossing the sky. Two other VLT telescopes are also seen. Photographed in August 2010.Restrictions:.
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