The full scope of Paranal’s beauty 🤩
Right in front, one of the movable ATs stands tall, while the UTs are scanning the sky.
The lasers emerging from the UTs create each a bright artificial star on the sky to correct observations for the blurring effect of the atmosphere. Until recently, only one UT was equipped with lasers. But now one additional laser has been installed in the other 3.
Discover why: https://www.eso.org/public/images/potw2606a/
A. Trigo/ESO