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.


  • January Skies 2019

    by Zachary Singer Intro We start the first month of the New Year off with a splash—a total lunar eclipse on the night of January 20th. Along with that, we have planets and two targets in Eridanus—one is an important … Read More

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  • January General Meeting

    Join us on January 18th, 2019, at 7:30 PM, for our monthly General Meeting. We’ll have a call for Executive Board Nominations, and a presentation by Dr. Graham Lau on “THE CRAZIEST CREATURES ON EARTH: What the world’s wackiest organisms can tell us … Read More

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  • Astro Update, January 2019

    Selected Summaries of Space News by Don Lynn Phobos Grooves Explained Since the first close-up images were taken of the Martian moon Phobos decades ago, scientists have argued about why there are long grooves on its surface. Leading theories were … Read More

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  • The Denver Observer Moves Online!

    Happy New Year, and welcome to the new home of the Denver Observer, the newsletter for the Denver Astronomical Society. This page is just getting started, but the trickle of posts (or “articles,” if you want to kick it old-school) … 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