Peek inside ESO's Extremely Large Telescope (ELT), under construction in #Chile 's Atacama Desert. The main structure shown here will host the ELT’s five mirrors, which will gather the light and send it to the instruments at the sides of the telescope.
With its 39-metre-diameter, the main mirror will be the largest ever for an optical telescope: the biggest eye on the sky!
Read more: https://www.eso.org/public/images/potw2605a/
📷 ESO/J. C. Muñoz-Mateos
