Volunteering is a great way to learn and enrich your own astronomical knowledge
Eagle Nebula by Bill Hughes
Learn more about the night sky through DAS events
DU’s historic Chamberlin Observatory continues to delight visitors
Astrophotos by our members bring deep sky wonders up close
2026 VNHA Scholarship - Apply by June 15th!

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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Lunar Eclipse Party Update

We’ve been fielding questions these last few days about whether the DAS is hosting any activities for the upcoming Sunday, January 20th lunar eclipse. While DAS is not having an event, Mile High Astronomy, run by our own Sorin, is—they’re roping off their parking lot, and bringing out their telescopes (including some of their newest models), and eyepieces, too. You can also bring your own ‘scope—just let them know. They’ll be there from 8:00 PM – 12 midnight. Mile High Astrononomy is located at 9797 West Colfax Ave. #3VV, Lakewood 80215; 1-877-279-5280. Directions on Google Maps Click here to sign…
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January Skies 2019

by Zachary Singer Intro We start the first month of the New Year off with a splash—a total lunar eclipse on the night of January 20th. Along with that, we have planets and two targets in Eridanus—one is an important multiple-star system, and the other a striking planetary nebula. Lunar eclipses happen when the Earth, Moon, and Sun align so that the Earth is between the other two bodies, preventing the Sun from shining onto the Moon. A total lunar eclipse occurs when all of the Sun’s direct rays are blocked; these are mesmerizing phenomena to observe, and while a…
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January General Meeting

Join us on January 18th, 2019, at 7:30 PM, for our monthly General Meeting. We’ll have a call for Executive Board Nominations, and a presentation by Dr. Graham Lau on “THE CRAZIEST CREATURES ON EARTH: What the world’s wackiest organisms can tell us about life in the cosmos.”
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Astro Update, January 2019

Selected Summaries of Space News by Don Lynn Phobos Grooves Explained Since the first close-up images were taken of the Martian moon Phobos decades ago, scientists have argued about why there are long grooves on its surface. Leading theories were that the moon cracked from an impact or from tidal forces. But there were problems applying any of the theories to the observed grooves. A new computer simulation of an impact on Phobos suggests that the grooves were formed by boulders rolling across the surface after they were thrown out by the impact that formed the largest crater on that…
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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.