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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AL/NASA 35 Years of Hubble May Challenge

Last month, we discussed the Hubble’s Night Sky Observing Challenge and the April 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 May. 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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What’s Up in Denver? April 28th through May 4th, 2025

Here’s a brief look at what’s going on in the Mile High City this week. April 28: DAS E-Board Meeting (via zoom) at 7:00 PM (more info) April 29: Astrophotography Special Interest Group (ASIG) – General Meeting for DAS Members: 7:00 PM (more info). Look for the waxing Flower Moon near the Pleiades in Taurus in the western evening sky. April 30: Look for the waxing crescent Flower Moon next to Elnath and near Jupiter in Taurus in the early evening sky. Elnath is a bright blue giant star that straddles the constellations Taurus and Auriga. May 1: Standlely Lake…
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Get Ready for the Eta Aquariid Meteor Shower

The May Eta Aquariids Each May, the Eta Aquariid meteor shower puts on a show in the early morning sky. These meteors get their name because they appear to radiate from the constellation Aquarius, near the star Eta Aquarii. The Eta Aquariids are known for their fast, bright meteors and are especially exciting because they are connected to one of the most famous comets in history—Halley’s Comet. Observations of this shower go back hundreds of years, and it continues to impress skywatchers today. What is a Meteor Shower? When you see a shooting star, you’re witnessing a tiny bit of…
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What’s Up in Denver? April 21st through 27th, 2025

Here’s a brief look at what’s going on in the Mile High City this week. All Week: International Dark Sky Week Texas Star Party April 21: The April Lyrid Meteor Shower peaks late tonight into the early morning of the 22nd. Check out our article on why the Lyrids happen and when and where to watch! Mercury at Greatest Western Elongation. April 22: Astronomical Observing 101 Class: 7:00 PM at the Chamberlain Observatory weather permitting (Registration Required). Astrophotography Special Interest Group (ASIG) – General Meeting for DAS Members: 7:00 PM (more info). April 23: As Venus has moved from waning…
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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.