Sharing the Night Sky with the Public Since 1949

For over seventy-five years, the Denver Astronomical Society has brought together stargazers across the Denver metropolitan area and beyond. The society hosts dozens of events and activities yearly to promote amateur astronomy across our unique region, one mile nearer the stars.


  • Astronomy and Ramadan

    In response to a request that was originally received via the DAS Facebook page, DAS members Ron Hranac and Dena McClung joined members of the Rocky Mountain Islamic Center on the eastern edge of Sloan’s Lake on the evening of … Read More

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  • The Sacred Emblem of Immortality

    By Daniel Acker According to Egyptian records from about 2,000 BC, Cancer the Crab, as we know it today, was described as Scarabaeus, the sacred emblem of immortality. Much later, in Greek mythology, Cancer is associated with Hercules and Hydra, … Read More

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  • DAS Spring Banquet and 2023 Executive Board Announced

    On the night of March 4th, the Denver Astronomical Society held their annual spring banquet and announced the 2023 Executive Board. The dinner was delicious and the company was wonderful, with new members and old members alike joining each other … Read More

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  • Back to the Moon

    By David H. Levy I shouldn’t have been surprised by the complete success of the Artemis mission last fall. NASA’s A team of engineers really know what they are doing. The mission was fun to watch, particularly the brilliant light … Read More

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The Chamberlin Observatory

Chamberlin Observatory Tours

The Denver Astronomical Society hosts weekly and monthly events* at the University of Denver’s historic Chamberlin Observatory, featuring its prized 1894 Alvan Clark-Saegmuller 20-inch refracting telescope. It serves as the DAS home base for numerous Astronomy Nights, Open Houses, and special events throughout the year.

Due to overwhelming demand, we are changing how we reserve our Astronomy Nights and adding more to the calendar. For details, see our Reservations page.

If you have any questions about EXISTING reservations or would like to make changes to make changes to your reservation, email us at reservations@denverastro.org.


M•45 – Pleiades, Seven Sisters, Subaru image by Darrell Dodge

Astrophotography Special Interest Group

The Denver Astronomical Society (DAS) has established a Special Interest Group amongst its members devoted to Astrophotography. Do you want to learn or improve your skills in astrophotography? Do you enjoy viewing pictures of the Sun, Moon, Planets, or Deep Sky Objects? Ever wonder if you can take similar images? Maybe you have skills that you could pass on to novice members. Consider joining DAS and being part of this Special Interest Group. Please email us for more information. astrophotogroup@denverastro.org


The Van Nattan-Hansen-Anderson Scholarship

Established in 1973, the DAS Van Nattan-Hansen-Anderson Scholarship supports graduating high school and undergraduate college students majoring in astronomy and the physical sciences. Interested and eligible students are invited to apply for funding on the Scholarship Page.


Astronomical League 50th Anniversary

Access to member profiles and forums