Observatorio Palomar - Wikipedia, la enciclopedia libre
200-inch Hale telescope at Palomar Observatory shown at night. Built in 1948 and named for George Ellery Hale (1868-1938) Courtesy of Mount Wilson and Palomar Observatories Stock Photo - Alamy
Palomar Observatory - YouTube
Palomar Observatory | Astronomy, California, USA | Britannica
Hale telescope, Palomar Observatory, USA - Stock Image - R114/0034 - Science Photo Library
Hale Telescope, Palomar Observatory Stock Photo - Alamy