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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Get Ready for the Leonids Meteor Shower 2025

A Famous November Display The Leonids are one of the most famous meteor showers in history, known for producing incredible storms in the past. While 2025 won’t bring one of those once-in-a-lifetime storms, the shower still promises a fine show for skywatchers, especially with little interference from moonlight this year. What is a Meteor Shower? Meteor showers happen when Earth passes through a trail of dust and debris left behind by a comet or asteroid. As those tiny particles hit our atmosphere at high speeds, they burn up and streak across the sky as meteors — or “shooting stars.” Each…
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What’s Up in Denver? November 10th through 16th, 2025

Here’s a brief look at what’s going on in the Mile High City this week. November 10: Look for the waning gibbous Beaver Moon near Beehive Cluster (M44) in the constellation Cancer low in the eastern sky around 10:00 PM DAS General Meeting: Members Show & Tell Night: 📍Secular Hub: 7:00 PM November 11 (Veteran’s Day): Last Quarter Beaver Moon: 10:28 PM November 12: The Northern Taurids Meteor Shower Peaks. Look for this smaller shower that can produce bright fireballs radiating high in the southwestern skies in Taurus just southeast of the Pleiades after midnight. November 13: Look for the…
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What’s Up in Denver? November 3rd through 9th, 2025

Here’s a brief look at what’s going on in the Mile High City this week. November 3: Test your eyes on the Moon: Weather permitting, tonight is a great night to go through some of Pickering’s features that look best during the waxing gibbous phase of the moon, including: Gassendi, Plinius region, Vaporum, Lubiniezky region, Medii, Sacrobosco, Huygens region, and Riphaen Mountains. Anytime from sunset to sunrise. November 4: As winter draws nearer, the Winter Triangle asterism rises earlier and earlier in the east. The Winter Triangle connects the bright stars Betelgeuse, Sirius, and Procyon to form a large triangle…
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AL/NASA 35 Years of Hubble November Challenge

Last month, we discussed the Hubble’s Night Sky Observing Challenge and the October targets announced by the Astronomical League and NASA to celebrate 35 Years of the Hubble Space Telescope. These organizations have announced a new set of targets for the month of November. Read on to find out more. Discover the Universe Like Hubble! Join the celebration of the Hubble Space Telescope’s 35th anniversary by participating in the Hubble’s Night Sky Observing Challenge! Equipped with a telescope, clear skies, and star charts, you can explore breathtaking nebulae and galaxies that Hubble has captured from space. A fresh list of…
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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.