Hopkins Observatory

Hopkins Observatory is an astronomical facility on the Williams College campus with telescopes housed under a dome structure. A 24-inch reflector telescope mounted on the physics building roof serves research and student observations.

Professor Albert Hopkins brought observational equipment from England in 1834 and oversaw construction from 1836 to 1838. The facility received its first professional telescope from Alvan Clark in 1852, which launched his career as a renowned telescope maker.

The planetarium section introduces astronomy to students and visitors from the community. Its regular programs make the study of the sky available to people without specialized knowledge.

Visitors should know that access comes through the Williams College campus and hours may be limited to certain times. It's best to check ahead for current availability and programs happening at the site.

The Alvan Clark telescope installed here in 1852 was a turning point for his work and led to founding his later famous telescope company. This first professional commission established his reputation as an optician and instrument maker.

Location: Williamstown

Inception: 1838

Website: http://williams.edu/Astronomy/Hopkins

GPS coordinates: 42.71170,-73.20170

Latest update: December 14, 2025 09:40