Rubin Observatory's 3.5-meter secondary mirror installed

Vera C. Rubin Observatory's 3.5-meter secondary mirror has been installed on the Simonyi Survey Telescope on Cerro Pachón in Chile. The glass mirror—made by Corning Advanced Optics and polished by L3Harris Technologies—is the first permanent component of the telescope's state-of-the-art, wide-field optical system to be installed and will soon contribute to a better understanding of our universe.