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 - 10:30 pm

Open House Star Party at Chamberlin Observatory

Looking for a FREE fun family activity? Join the Denver Astronomical Society for our monthly Open House on Saturday, July 18th, at dusk. This event will take place on the south lawn of DU’s historic Chamberlin Observatory, located at 2930 … Read More ...

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What’s Up in Denver? June 29th through July 5th, 2026

Look Here’s a brief look at what’s going on in the Mile High City this week. June 29: 👀 Look for the waxing gibbous Strawberry Moon in the Teapot, the asterism in the constellation Sagittarius low in the southeastern sky around 10:00PM June 30 (International Asteroid Day): 🗓️ International Asteroid Day falls on the anniversary of the Tunguska Event. It is the United Nations-sanctioned day of public awareness around planetary defense and the risks that asteroids pose to Earth. 🆓 Get FREE Queso and Chips from QDOBA with the purchase of an entrée in celebration of the Full Moon 🌕…
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Planning Stargazing Vacations in Colorado: Camping, ranches, resorts, towns, tours, and trains under the stars

Colorado’s new Stargazing Trail has made one thing clear: our state is not just a good place to look up. It is becoming one of the best places in the country to plan a vacation around the night sky. The trail connects certified International Dark Sky Parks and Communities across Colorado, from high mountain towns to remote canyons, dunes, reservoirs, and public lands. But the real story may be what is happening around those dark places. Across Colorado, parks, communities, ranches, resorts, guides, railroads, and local astronomy groups are helping visitors do more than find a dark sky. They are…
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What’s Up in Denver? June 22nd through 28th, 2026

Look Here’s a brief look at what’s going on in the Mile High City this week. June 22: 🖥️ DAS E-Board Meeting: Members-only, virtual meeting via Zoom (check membership email or Slack for details): 7:00PM June 23: 👀 Look for the waxing gibbous Strawberry Moon near Spica, the bright alpha star in the constellation Virgo in the southern sky around 10:00PM June 24: 👀 Look for the Summer Triangle asterism: with the June solstice heralding the coming of summer last week, we begin to see the three bright stars of Vega, Altair, and Deneb connecting the constellations of Lyra, Aquila,…
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What’s Up in Denver? June 15th through 21st, 2026

Here’s a brief look at what’s going on in the Mile High City this week. June 15: 👀 Mercury reaches its easternmost elongation from the sun, when our smallest planet will be 25 degrees from the sun in our sky making it the easiest time to spot it in our sky. Catch it in the constellation Gemini in the western sky just after sunset: 9:30 PM June 16: 👀 Look for the waxing crescent Strawberry Moon next to Castor, Pollux, Mercury, and Jupiter, low in the western sky in the constellation Gemini: 9:45 PM June 17: 👀 Look for the…
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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.