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.

June

8:30 pm - 8:30 pm

Open House

Looking for a FREE fun family activity? Join the Denver Astronomical Society for our monthly Open House Saturday night at dusk. This event will occur on the south lawn of DU’s historic Chamberlin Observatory, 2930 E. Warren Avenue, Denver. Weather … Read More ...

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DAS Astrophotography Gallery for April 2026

The Denver Astronomical Society Astrophotography Special Interest Group (ASIG) April Member Gallery Each month, the Astrophotography Special Interest Group (ASIG) of the Denver Astronomical Society gathers to share one of the most inspiring parts of our hobby—the images we’ve captured of the night sky. From stunning galaxies and colorful nebulae to detailed views of the Moon and planets, members present their latest work, talk through how the images were created, and exchange tips, techniques, and stories from behind the lens. It’s a chance to celebrate progress, learn from one another, and stay motivated under the stars. Roger Clark Below is…
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What’s Up in Denver? April 6th through 12th, 2026

Here’s a brief look at what’s going on in the Mile High City this week. April 6 (Easter Monday): Look for the waning gibbous Pink Moon next to Antares, the red heart of the scorpion in the constellation Scorpious low in the southeastern sky around 1:30AM April 7: The waning gibbous Pink Moon reaches apogee, its farthest distance from Earth at 404,970km: 2:00 AM April 8: Colorado Springs Star Party: Free in-person event at Pikes Peak State College Rampart (North) Campus: 8:00 PM April 9: NASA’s Lucy Mission: Updates and Mainbelt Encounters with Dr. Simone Marchi and John Spencer: Ticketed…
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Quarterly Letter from the President – April 2026

From the President A regular message from DAS’s president is something past presidents have done and I want to continue this tradition. My intent is to share goals, ideas, and encourage participation in the Denver Astronomical Society. Please feel free to contact me at president@denverastro.org. One of the benefits of membership in DAS is our monthly General Membership Meetings, which occur on the second Monday of each month. These are conducted in-person and virtually via Zoom. Each month, we have speakers from a variety of backgrounds that provide engaging presentations on a wide range of topics for those who are…
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Of Mario Motta, Jean Mueller, the late Russell Porter, a Lunar Eclipse, and me: Skyward for April 2026

On the morning of 3 March, 2026, a total eclipse of the Moon darkened the night sky over all of the world that was in night. The eclipse was fabulous. During its total phase, the Moon was not really its usual coppery red color but more of a greyish-brown. On the Danjon luminosity scale, I gave it about a 1.5 on the scale of 0 to 5. I was lucky to view this eclipse during the inaugural session at the San Diego Astronomical Association’s newest acquisition. I do not recall an eclipse that was more fun than this one. And…
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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.