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.


  • Astro Update, February 2019

    Selected Summaries of Space News by Don Lynn Kuiper Belt Object Flyby On December 31st, New Horizons (Pluto spacecraft) flew by the Kuiper Belt object 2014 MU69, since unofficially named Ultima Thule, at a distance of only 2200 miles, fervently … Read More

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  • President’s Message, February 2019

    Getting Involved by Ron Hranac Denver Astronomical Society is a volunteer-based organization that has been serving Colorado’s Front Range for nearly 70 years. Indeed, we wouldn’t exist if it weren’t for the countless people who have made and continue to … Read More

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  • January 26th In-Reach CANCELLED

    Please note that the DAS In-Reach originally scheduled for this evening, Saturday, January 26th, has been cancelled. (Separately, we have some good news about our In-Reach program, and we’ll post that soon.)

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  • Lunar Eclipse Party Update

    We’ve been fielding questions these last few days about whether the DAS is hosting any activities for the upcoming Sunday, January 20th lunar eclipse. While DAS is not having an event, Mile High Astronomy, run by our own Sorin, is—they’re roping … 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