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Palomar Observatory
P48 1994 Jean Large
Astronomer Jean Mueller posing with the Samuel Oschin Telescope (Schmidt Camera)
Organization Caltech
Location San Diego County, California
Altitude 1,713 m (5,618 ft)
Palomar at Caltech
Hale Telescope 200 inch (5.08 m) reflector
60 inch (1.52 m) Telescope 60 inch (1.52 m) reflector
Samuel Oschin Telescope 48 inch (1.22 m) Schmidt Reflector
JPL Palomar Testbed Interferometer Interferometer
Snoop All-Sky Camera

Palomar Observatory is a privately owned observatory in San Diego County, California, 90 miles (145 km) southeast of Mount Wilson Observatory, on Palomar Mountain in the Palomar Mountain Range. It is owned and run by the California Institute of Technology (Caltech). The observatory is made up of four main telescopes: the 200 inch (5.08 m) Hale telescope, the 48 inch (1.22 m) Samuel Oschin telescope, the 18 inch (457 millimeter) Schmidt telescope, and a 60 inch (1.52 m) reflecting telescope. Also, the Palomar Testbed Interferometer is located at this observatory.


The word palomar is from the Spanish language, meaning pigeon house. The name may be because of the large amounts of pigeons that can be seen in the spring and autumn months on Palomar Mountain, or it may be because of an old pigeon-raising building built there by the Spaniards.

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