Jewett Observatory

Jewett Observatory is an astronomical facility on the Washington State University campus that contains specialized telescopes and equipment for observation and study. Located at an elevation of 790 meters, it houses twelve portable telescopes dedicated to educational purposes.

The university acquired the telescope featuring a 12-inch lens made by Alvan Clark & Sons between 1887 and 1889 through an auction in the 1950s. The instrument remained in storage for many years before eventually being installed at the facility.

The facility hosts monthly observation events where visitors can use the main telescope to explore the night sky together. These gatherings bring community members together around a shared interest in astronomy.

Check ahead about viewing events and schedules since observation sessions occur at specific times and weather conditions affect visibility. The facility sits on university grounds, so knowing the exact location on campus before you arrive helps with planning.

The facility houses the largest refracting telescope in Washington State, with a lens crafted decades before the structure itself was built. This 12-inch optic has an unusual story of lying unused for generations before finding its home here.

Location: Pullman

Elevation above the sea: 790 m

Website: http://astro.wsu.edu/observatory.html

GPS coordinates: 46.72860,-117.15300

Latest update: December 14, 2025 14:25