January - Guide star in the Milky Way

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Three of the four Unit Telescopes that make up ESO’s Very Large Telescope reflect the glow of the laser light being sent up by the fourth. It is part of the Adaptive Optics system; state-of-the-art technology that corrects for the blurring effects of the Earth’s atmosphere to produce high quality observational data. Our own galaxy, the Milky Way, can be seen as a bright band across the sky. The four Unit Telescopes of the ESO’s VLT are called Antu, Kueyen, Melipal and Yepun — Mapuche names for the Sun, Moon, the Southern Cross and Venus.


G. Hüdepohl (atacamaphoto.com)/ESO

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