W. M. Keck Observatory – The Keck Observatory telescopes on Maunakea in Hawaii, are the world's largest optical and infrared telescopes. Keck Observatory's vision is to advance the frontiers of astronomy and
Keck telescopes | telescopes, Mauna Kea, Hawaii, United States | Britannica
UC's Keck Observatory marks 20 years of cosmic discovery | UCLA
APOD: July 15, 1996 - Keck: The Largest Optical Telescope