It is located on the college's campus in Los Altos Hills, California (US).

The observatory is used by students enrolled in the introductory astronomy lab on campus, which is part of the college's thriving astronomy for non-scientists program, serving over 800 students per year.

Conditions permitting, the PAS opens the observatory for public viewing every clear Friday night from 9 p.m. to about 11 p.m., and for solar viewing every clear Saturday morning from 10 a.m. to 12 p.m.

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