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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Chasing Cosmic Snowballs — Join the Active Asteroids Project!

Welcome back to our Citizen Science series! So far, we’ve looked at galaxies and Martian clouds. Now, we’re going to chase cosmic snowballs — or, more accurately, active asteroids. Get ready to explore an icy mystery right here in our solar system! What is the Active Asteroids Project? Active asteroids are strange objects in our solar system. Normally, asteroids are just big rocks orbiting the Sun. But some of them act a lot like comets — they spew out dust and gas, creating beautiful tails! Scientists are trying to find out why. Are these asteroids getting too close to the…
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Sharing the Wonder: We Need Your Help with DAS Outreach

The Magic of First Encounters Remember the first time you peered through a telescope and saw the Moon’s craters, or the rings of Saturn? Or maybe the moment you first learned about the night sky in a planetarium, or when a teacher, parent, or grandparent showed you the constellations. Those first sparks of wonder stay with us forever — they’re what make astronomy so special. That’s what outreach is all about: sharing those first moments of awe with others. The Denver Astronomical Society (DAS) has a rich tradition of bringing the universe down to Earth for people of all ages…
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Hop, Skip, and Stargaze: A Cool Book for Exploring the Night Sky

The Star Hopper’s Guide to the Universe Do you like looking at stars and want to learn how to find interesting things in the night sky? There’s a free book called The Star Hopper’s Guide to the Universe that can help you with that. This book was created for people who want to use the star hopping technique. Star hopping is when you find bright stars in the sky and use them to “hop” to other objects like galaxies and star clusters. It’s great for people who don’t have a GoTo telescope. The book has over 170 pages with star…
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What’s Up in Denver? June 2nd through 8th, 2025

Here’s a brief look at what’s going on in the Mile High City this week. June 2: First quarter Strawberry Moon near Regulus in the constellation Leo: 9:40 PM Catch Jupiter low in the western skies in Gemini around sunset. This is the last week Jupiter will be visible in the night skies as it moves to the morning skies in July. June 3: Astrophotography Special Interest Group (ASIG) – General Meeting for DAS Members: 7:00 PM (more info). June 4: Find the waxing gibbous Strawberry Moon along the bottom side of the Spring Triangle asterism. The Spring Triangle is…
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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.