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Chamberlin Observatory

DU owns and operates the Chamberlin Observatory, located just a few blocks from campus at Observatory Park. The Chamberlin Observatory has been open for more than 120 years and hosts a variety of public outreach events each week. Established in 1890, the observatory and its 20-inch refracting telescope are managed and cared for by the Department of Physics and Astronomy.

observatory patrons looking through the telescope on an open house night

Public Nights and Open Houses

Public nights at the Chamberlin Observatory began in 1894. Hosted by the Denver Astronomical Society, public nights take place on Tuesdays and Thursdays at 8:30 p.m. in the summer (7:30 p.m. in winter). Attendees must register ahead as there are limited seats on each night ($4 per adult, $3 per child). Registrations are made through the Denver Astronomical Society website

Open houses are held once a month and are open to all for just a $2 cash donation. Attendees can view the stars through the observatory's Alvan Clark-Saegmuller refracting telescope. 2019 Open House nights are June 8, July 13, August 10, September 17, October 5, November 2 and December 7.