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.

September

5:00 pm - 10:00 pm

Open House – International Observe the Moon Night, Saturn & Neptune!

Looking for a FREE fun family activity? Join the Denver Astronomical Society for a special International Observe the Moon Night Open House at Denver University’s historic Chamberlin Observatory. International Observe the Moon Night is a worldwide celebration of our nearest celestial … Read More ...

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Frisco Becomes Colorado’s Newest Dark Sky Community

Colorado’s list of communities working to protect the night sky continues to grow. The Town of Frisco has officially been designated an International Dark Sky Community by DarkSky International, recognizing the mountain town’s commitment to reducing light pollution and preserving its spectacular nighttime environment. Frisco becomes the ninth International Dark Sky Community in Colorado, joining Westcliffe and Silver Cliff, Norwood, Nucla and Naturita, Ridgway, Crestone, Paonia, Breckenridge, and Old Snowmass. For a mountain community surrounded by some of Colorado’s most beautiful landscapes, protecting the night sky is a natural extension of Frisco’s commitment to its environment. What Is a Dark…
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What’s Up in Denver? August 24th through 30th, 2026

Here’s a brief look at what’s going on in the Mile High City this week. August 24: DMNS Free Day: Free, in-person program at Denver Museum of Nature and Science: 9:00AM to close DAS E-Board Meeting: Online, member’s only event via Zoom (check Slack and membership email for details): 7:00PM August 25: China’s Change 7 robotic mission to the moon is scheduled to launch this week between August 24 and August 31. The waxing gibbous Sturgeon Moon reaches aphelion, when it reaches its furthest point from the Sun (1.0131 AU) in its monthly orbit around the earth: 2:21PM August 26:…
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DAS Astrophotography Gallery for August 2026

The Denver Astronomical Society Astrophotography Special Interest Group (ASIG) July 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. Teo Topcubasi The…
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What’s Up in Denver? August 17th through 23rd, 2026

Here’s a brief look at what’s going on in the Mile High City this week. August 17: 🛰️ Get a glimpse of the ISS passing across Denver’s pre-dawn sky. The International Space Station will move swiftly across the sky from the southwest to the northeast between 5:27 and 05:33AM August 18: ☄️ κ-Cygnid meteor shower peaks with their radiant near the border of Cygnus and Draco and high in the northern sky. Expect up to 3 meteors per hour at peak from 10:00PM until dawn. August 19: 🖥️ DAS Astrophotography Special Interest Group (ASIG) – Advanced Image Processing: Free, member’s…
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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.