DAS Activities

DAS Public Nights

Public Nights are Temporarily Suspended
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!

DAS Event Modifications & Cancellations Due to COVID-19

We have made the decision to extend the cancellation of all indoor DAS events because of concerns about COVID-19 (Coronavirus) until further notice. The cancellations include Public Nights, Open House, In-Reach, and VNH Scholarship Committee meeting. Public Night reservations for all months will be blocked.

Members-only access to the DAS Dark Site on Dark Sky Weekends will be determined by lottery. There will be Site Orientations by lottery on Saturday after E-Board. (See the Event Page on the Member Portal for information.) See the Dark Site page for information about dates. Use of the Dark Site at other times will be restricted to 25 people at a time. If you arrive and there are already 25 people at the site, please return home.

The monthly E-Board meeting and General Meetings will continue to be held via conference call or ZOOM instead of in-person.  All members are welcome to attend these meetings, and conference connection information will be provided as the time approaches.

While we are extremely disappointed that we cannot continue with these events as planned, we believe this is the right decision given the current circumstances.

We are monitoring the situation closely and will make further decisions in the coming days and weeks as appropriate. We will continue to review our guidance based on official advice.

DAS Members: Please check the Member Portal or our website, denverastro.org for updates, which will be posted as the situation evolves.  Questions may be directed to president@denverastro.org .

  –  Your Denver Astronomical Society Executive Officers


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.

WHAT’S UP (for those hungry for the latest astronomy information !)


DAS monthly meetings (Now accessible only online via ZOOM) 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.

Our Edmund G. Kline Dark Site  on the Eastern Plains near Deer Trail, Colorado provides dark skies for members. At the present time, a lottery system is being used to comply with state guidelines for social distancing.

Our online Member Portal provides easier access to membership and donation options as well as Member Forums that 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.

(NOTE: Public Nights have been suspended until further notice due to COVID-19) 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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