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.

  • What’s Up in Denver? February 16th through 22nd, 2026

    Here’s a brief look at what’s going on in the Mile High City this week. February 16 (Presidents’ Day): Tonight is a great night to catch the Great Red Spot of Jupiter with a telescope high overhead in the constellation

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  • What’s Up in Denver? February 9th through 15th, 2026

    Here’s a brief look at what’s going on in the Mile High City this week. February 9: DAS Annual Meeting: Artemis and Beyond! Human Missions to the Moons of the Solar System and DAS Election Results (Free public program): In-person at Secular

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  • Why I Still Hunt Comets: Skyward for February 2026

    A few minutes before midnight on 17 December 1965, I began a program of hunting for comets and exploding stars, or novae.  I recall writing at the time that when I began, the interest would primarily be in comets. It

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  • What’s Up in Denver? February 2nd through 8th, 2025

    Here’s a brief look at what’s going on in the Mile High City this week. February 2: Catch the waning gibbous Snow Moon near Regulus and the Sickle Asterism: look for the moon to add to the already bright alpha

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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, 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.


Astronomical League 50th Anniversary

Access to member profiles and forums