Palomar Observatory

19485.1 m Hale telescopeCaltech

LocationUSA (CA)

Year1948

Size5.1 m Hale telescope

OperatorCaltech

About Palomar Observatory

The Hale telescope was the largest in the world for 28 years. Discovered thousands of asteroids and quasars. Located at 1,713 m in San Diego County. The mirror took 10 years to cast and cool. First light was delayed by WWII.

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