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.

October

6:45 pm - 9:45 pm

Open House-Neptune! Saturn!

Looking for a FREE fun family activity? Join the Denver Astronomical Society for our monthly Open House on Saturday, July 18th, at dusk. This event will take place on the south lawn of DU’s historic Chamberlin Observatory, located at … Read More ...

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What’s Up in Denver? October 12th through 18th, 2026

Here’s a brief look at what’s going on in the Mile High City this week. October 12: Catch the waxing crescent Hunter’s Moon near Venus and Mercury in the constellation Libra in the western sky just as the sun is setting around 6:15 PM Mercury reaches its greatest eastern elongation, appearing farthest east of the Sun from our vantage point on Earth.4:00 AM October 13: Cosmic Collisions: How Black Hole Mergers Shape the Hearts of Galaxies with Dr. Jane Bright: Free, in-person event at Boulder Public Library Reynolds Branch: 5:45 PM The Moon reaches perihelion, its closest point to the…
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DAS Astrophotography Gallery for October 2026

The Denver Astronomical Society Astrophotography Special Interest Group (ASIG) October 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. Richard Graylin NGC…
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Quarterly Letter from the President – October 2026

Greetings to all of you who are interested in Denver Astronomical Society, follow us on social media, may be considering joining the DAS, and those who are just looking for astronomy-themed activities. We have much to offer. Please check the calendar of events on our website (https://www.denverastro.org/das-events/event-calendar/) for future activities! DAS participated in the Artemis II event at Red Rocks on August 3rd, including their STEM (Science, Technology, Engineering, and Mathematics) fair. This event attracted over 8,000 attendees! We sponsored a booth where we provided information to those in attendance and signed up a number of new members. Our participation…
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What’s Up in Denver? October 5th through 11th, 2026

Here’s a brief look at what’s going on in the Mile High City this week. October 5: Look for the waning crescent Harvest Moon in between Mars and the Beehive Cluster (M44), low in the eastern sky in the constellation Cancer around 2:15 AM until dawn. October Camelopardalids Meteor Shower peaks: Look for about 5 meteors per hour from a radiant around Polaris after 5:00 AM October 6: Catch the waning crescent Harvest Moon occulting Jupiter. Look for the bright limb of the Moon to occult Jupiter around 2:23 AM with it reappearing from its dark limb around 3:11 AM October 7:…
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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.