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.


  • Upcoming Events Through June 30

    DAS E-Board Meeting, Makers Special Interest Group, Mars Webinar, Galaxy Season, Arcturus & Vega, star charts, and more! June 24: DAS Executive Board Meetinghttps://www.denverastro.org/events/e-board-6/?occurrence=2024-06-24 June 26: MakerSIG Meetinghttps://www.denverastro.org/events/das-makersig-meeting-5/ June 27: NSN Webinar Series: Perseverance: Three Years of Exploring Mars with Kim … Read More

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  • Upcoming Events Through June 24

    June 19: Astrophotography Special Interest Group (ASIG) https://www.denverastro.org/events/astrophotography-special-interest-group-asig-meeting-2-of-2-6/?occurrence=2024-06-19 June 20: Summer Solstice (longest day and shortest night of the year for Earth’s northern hemisphere) June 21: Full Strawberry Moon – This is the lowest full moon of the year, appearing … Read More

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  • Upcoming Events Through June 18

    DAS General Meeting: NASA’s Juno Mission to Jupiter, Chamberlin Observatory Open House (star party), Spica, Altair, Vega, Arcturus, North American Nebula, star charts, and more!   The attached image from Stellarium-web.org shows the expected sky at 10:00 p.m. on Friday, … Read More

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  • NASA’s 2024 Summer Astrophoto Challenge

    Attention Astrophotographers! Enter NASA’s 2024 Summer Astrophoto Challenge and create your image of the Cassiopeia A (Cas A) using James Webb Space Telescope data. You can capture your real-time telescope image using the MicroObservatory robotic telescope network or work with … Read More

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The Chamberlin Observatory

Chamberlin Observatory Tours

The Denver Astronomical Society hosts weekly and monthly events* at the University of Denver’s historic Chamberlin Observatory, featuring its prized 1894 Alvan Clark-Saegmuller 20-inch refracting telescope. It serves as the DAS home base for numerous Public Nights, Open Houses, and special events throughout the year.

Due to overwhelming demand, we are changing how we reserve our Public Nights and adding more to the calendar. We are sold out into mid-2025 and will not open any more slots until we can revamp our reservation system and get our new teams in place. We are committed to providing you with the best experience, and we apologize for any inconvenience this may cause. Please watch for announcements on our Facebook page and our DAS News page.

If you have any questions about EXISTING reservations or would like to make changes to make changes to your 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? Ever wonder if you can take similar images? Maybe you 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.


Astronomical League 50th Anniversary

Access to member profiles and forums