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

7:30 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 neighbor. … Read More ...

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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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What’s Up in Denver? August 10th through 16th, 2026

Look Here’s a brief look at what’s going on in the Mile High City this week. August 10: 🎤 DAS General Meeting: “Piercing The Veil Under the LA Sky Skyline: Adventures In Breaking Barriers of Art and Science in Backyard Astrophotography” with : Free, in-person event at Secular Hub: 7:00PM 👀 Look for the waning crescent Buck Moon near Castor and Pollux low in the Eastern sky in the constellation Gemini around 4:30 until sunrise 🌘 The waning crescent Buck Moon reaches perigee, it’s closest distance to Earth at 363,284km: 5:18AM August 11: 🖥️ STScI: NASA’s Nancy Grace Roman Space…
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Summer’s Most Spectacular Show Returns: The 2026 Perseid Meteor Shower

Every August, Earth passes through a stream of tiny bits of debris left behind by Comet Swift-Tuttle. As these particles enter our atmosphere at nearly 37 miles (60 kilometers) per second, they burn up in brilliant flashes of light, creating one of nature’s most beautiful annual events: the Perseid meteor shower. The Perseids have long been a favorite of amateur and professional astronomers alike, and 2026 promises to be one of the best years in recent memory to enjoy the show. Why 2026 Is Special Many recent Perseid displays have been hampered by bright moonlight washing out the fainter meteors.…
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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.