Hopkins Observatory is an astronomical observatory owned and operated by Williams College in Williamstown, Massachusetts. Constructed in 1838 by Albert Hopkins, the college claims that it is the oldest observatory in the United States.
The observatory dates to 1834 when Prof. Albert Hopkins traveled to England to obtain astronomical equipment. His students constructed the observatory 1836-1838 in the center of the quad. It was moved once in 1908 and again to its present location in 1961, where it now serves as a planetarium. Today's building still contains the original transit, regulator with mercury-compensated pendulum, and rule.
Wikipedia https://en.wikipedia.org/wiki/Hopkins_Observatory
Official website http://astronomy.williams.edu/hopkins-observatory/
Email mcr4@williams.edu
Phone +1 413 597 2188
Address 829 Main Street, Williamstown, MA 01267, USA
Coordinates 42°42'41.426" N -73°12'6.175" E