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.

  • Where to Explore the 2025 Denver Night Skies

    This is the third installment of a three-part series exploring the wonders of Denver’s night skies. Be sure to check out the other articles in the series: What to Explore in the 2025 Denver Night Skies and When to Explore

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  • When to Explore the 2025 Denver Night Skies

    In our previous article, we spoke in depth about the variety of celestial objects that you can observe in the 2025 Denver night skies. If you’re planning to stargaze in Denver, knowing when to look up is just as important

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  • What to Explore in the 2025 Denver Night Skies

    As one of the largest astronomy clubs in the country, the Denver Astronomical Society continues to grow and inspire amateur astronomers of all experience levels. Whether you’re new to stargazing or a seasoned observer, you might be starting to plan

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  • What’s Up in Denver? January 27th through February 2nd, 2025

    Here’s a brief look at what’s going on in the skies above the Mile High City this week. January 27:   If you’re planning to to take part in the NASA/AL Hubble Night Sky Challenge, for either the January (Silver)

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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, which features its prized 1894 Alvan Clark-Saegmuller 20-inch refracting telescope. The Observatory 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 want to change your existing 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? Can you take similar images? You may 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