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.

July

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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November’s Night Sky Notes: Snowballs from Space

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 If you spotted comet C/2023 A3 (Tsuchinshan-ATLAS) in person, or seen photos online this October, you might have been inspired to learn more about these visitors from the outer Solar System. Get ready for the next comet and find out how comets are connected to some of our favorite annual astronomy events. Comet Composition A comet is defined as an icy body that is small…
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Skyward for October 2024

by David H. Levy Morello’s outline there is wrongly traced, His hue mistaken; what of that? or else, Rightly traced and well ordered; what of that? Speak as they please, what does the mountain care? Ah, but a man’s reach should exceed his grasp, Or what’s a heaven for? Robert Browning, Andrea del Sarto, 1855. Decades ago during the fall of a year that I recall might have been 1972, I attended Yom Kippur services at our family synagogue in Montreal, Congregation Shaar Hashomayim. The Congregation had instituted a new feature that year, a Yom Kippur Teach-in. I decided to…
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October’s Night Sky Notes: Catch Andromeda Rising!

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 Dave Prosper Updated by Kat Troche If you’re thinking of a galaxy, the image in your head is probably the Andromeda Galaxy! Studies of this massive neighboring galaxy, also called M31, have played an incredibly important role in shaping modern astronomy. As a bonus for stargazers, the Andromeda Galaxy is also a beautiful sight. Spot the Andromeda Galaxy! M31’s more common name comes from its parent constellation,…
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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 of space rock that broke into smaller pieces as they burned up, delighting those who were fortunate enough to be looking in the right direction. Photos courtesy of Trish Kakenmaster.
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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.