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.


  • Milky Way Event at Sandstone Ranch

    On August 30, nearly 40 people from the DAS and Douglas County enjoyed a perfectly clear dark sky filled with stars, the Milky Way, and at least half a dozen large meteors. These were no shooting stars; they were chunks … Read More

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  • Upcoming Events Through Sept 15

    Mon: Denver Astro General Meeting: Free and Open to the Public https://www.denverastro.org/events/general-meeting-9/?occurrence=2024-09-0 Sat: Denver Astro Open House Star Party at Chamberlin Observatory https://www.facebook.com/events/1669756047137558 ——- Not sure what to look at this month? Check out some of these great stargazing resources: … Read More

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  • Skyward for September 2024

    By David H. Levy The 2024 Adirondack Astronomy Retreat. Come gentle night, come loving black-brow’d night, Give me my Romeo, and when I shall die, Take him and cut him out in little stars, And he will make the face … Read More

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  • September’s Night Sky Notes: Marvelous Moons

    This article is distributed by NASA’s Night Sky Network (NSN). The NSN program supports astronomy clubs across the USA dedicated to astronomy outreach. Visit nightsky.jpl.nasa.gov to find local clubs, events, and more! By Kat Troche September brings the gas giants … 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 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 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