DAS Activities

DAS Public Nights

Public Nights
Tuesday and Thursday at
DU's Historic Chamberlin Observatory
Current start time is 7:30 pm.

Costs to the public are:
$4.00 adults, $3.00 children

To book, please click:

Public Night Reservations



Welcome to the DAS!

One of the Nation’s Largest and Most Active Astronomical Societies, Since 1949!

Solar Observing on Space Day 2015

Solar Observing on Space Day 2015

The Denver Astronomical Society (DAS) promotes the enjoyment and understanding of astronomical phenomena, history and lore by providing educational and observing opportunities for our members, education to the general public, and outreach activities at the University of Denver’s Historic Chamberlin Observatory, schools, and nature centers.



DAS monthly meetings feature outstanding presentations on a wide array of astronomical and space-science topics and are open to the public (except for society functions in March and December.) Videos of DAS monthly meetings are posted on our YouTube Channel.


DAS member “In-Reach” events provide new members and those new to astronomy with information on telescopes, astronomical equipment, and observing techniques during “hands-on” opportunities at DU’s Historic Chamberlin Observatory and the DAS Dark Site.

Members in good standing have full access to our Edmund G. Kline Dark Site on the Eastern Plains near Deer Trail, Colorado.

Our new Member Portal is now on-line, providing easier access to membership and donation options and Member Forums that will improve communications among members with special interests in space science and astronomy. The Classified section of the Portal is open to non-members who wish to purchase used astronomy equipment from DAS members.

The society’s volunteer members conduct public and education outreach activities that reach over 6,000 children and adults each year, that include twice-weekly public observing nights and monthly open house star gazing nights at Chamberlin Observatory and external outreach activities at local schools, businesses and institutions. The DAS also hosts events to access special astronomical phenomena such as eclipses, comets, close planet approaches, and the June 6, 2012 Transit of Venus. Twice yearly “Sun Days” are conducted in association with the Denver Museum of Nature and Science.

The DAS is an active participant in the NASA/JPL Night Sky Network of astronomical observing clubs.

The Society’s Van Nattan-Hansen Scholarship Fund provides support to qualifying Denver-area students seeking degrees in astronomy, space-science and related programs.

The DAS is also active in the preservation of DU’s Historic Chamberlin Observatory, spearheading the drive for its listing in the National Register of Historic Places and promoting recent renovation activities by the University of Denver.

The DAS is a proud member of the Astronomical League, Mountain Astronomical Research Section (MARS), and all members of the society are members of the AL and entitled to its benefits.

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