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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Astro Update – April

Astronomy and space news summarized by Don Lynn from NASA and other sources Earliest Cluster of Galaxies – When the first stars formed in the early Universe, essentially all of space was filled with neutral hydrogen gas. Much of the light emitted by these first stars was in the ultraviolet, but neutral hydrogen absorbs ultraviolet, obscuring observations of them. Over time, strong ultraviolet light from these primordial stars or newly formed quasars, knocked the electrons off of the surrounding hydrogen atoms, ionizing them and allowing the ultraviolet light to transmit through so their light might eventually reach Earth. But it…
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Astro Update – March

Astronomy and space news summarized by Don Lynn from NASA and other sources Perseverance Lands – NASA’s latest planetary mission, a rover named Perseverance, landed on Mars February 18. The rover weighs over a ton on Earth, and is seven feet high and ten feet long, plus an arm that extends out. There are 23 cameras onboard, including ones with color, zoom and stereo capabilities. Its onboard instruments include spectrometers, a ground-penetrating radar, microphones, a weather station and an experimental device to produce oxygen from the atmospheric carbon dioxide. The rover used a heat shield, a supersonic parachute and a…
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2021 DAS Election Results

By Dena McClung The Denver Astronomical Society 2021 Executive Board Election wrapped up at 9 p.m. on February 26, during the February Annual Meeting, with both the meeting and the election held online. For the first time, members were able to vote even if they did not attend the meeting itself. Also, for the first time in recent memory, there was a heated race for an officer position. July Candia was elected to the Vice President office, defeating two other strong candidates, Ken Sturrock and James Galey. In what may be another first as well, three of the four officer…
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Astro Update – February

Astronomy and space news summarized by Don Lynn from NASA and other sources Supernova Age – A new analysis of a supernova remnant in the Small Magellanic Cloud by scientists at Purdue University shows that the supernova should have been visible in the far south of Earth 1,700 years ago, but no record has been found of it having been seen. The new analysis measured the speed of knots of material thrown out by the supernova, but only selected ones that appeared not to have been slowed by interference from other gas or dust. Their paths were then traced back…
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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.