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The Delaware Astronomical Society's purpose is to encourage interest in and share our passion for astronomy. We do so throughout the year partly through star parties, a monthly on-line newsletter and having interesting guest speakers from various fields of astronomy at our meetings. These are only a few of our offerings to the members of DAS and the public at large. On this site, you will find our calendars, much more club information, items of interest to amateur astronomers, and lots of other information. Membership is not required to attend our meetings. Information on joining DAS is available at How to Join DAS.

Upcoming Events and Activities


June 23, 2017 - June 24, 2017

The exact date, time, and activity depend on the weather and will be announced 1-2 days ahead via DAS YAHOO GROUP email and by direct email to AP-SIG members.


June 24, 2017 8:30 pm - 10:30 pm

DAS shares views through their telescopes for overnight campers. Click here for details.


July 2, 2017 12:00 pm - 10:00 pm

Family-friendly activities and events! Hunt for prizes, enjoy food trucks, ice cream, children’s activities. Free concert by Kategory 5 with hits of the 70s, adults can visit the patio's craft beer garden. At 8:30PM observe the night sky with DAS. Click here for details.


July 11, 2017 7:00 pm - 8:30 pm

We will be discussing Galileo's Daughter by Dava Sobel.


July 14, 2017 8:00 pm - 11:00 pm

Natural Lands Trust’s 7th annual Friday Night Lights features a fantastic evening of music, beer, wine, sunset socializing and a star party amid one of Chester County, PA’s most inspiring landscapes on their 1,263-acre ChesLen Preserve. For details click here.

For more event information please see the Calendar
DAS Members and guests are welcome to convene at the Sawin Observatory or another site where observing and imaging sessions take place on clear sky nights. Dates will post on the DAS Yahoo Group as weather permits.
Special Interest Groups’ (SIG) gatherings, which include developing the skill-sets for Astrophotography and Telescope Making (ATM), will post advisories to DAS members who join the DAS SIG through email.


Featured Articles

At Mount Cuba Astronomical Observatory
Published: 09-08-2016 Hits: 837
Click here then scroll down for Public and Family events at the MCAO.
New Horizons Latest Reports
Published: 06-25-2015 Hits: 1785
Photographing the ISS Transit
Published: 01-25-2016 Hits: 1781
On, January 21st, 2016, several intrepid DAS members dared to brave the cold weather the night before the Blizzard of 2016 to attempt to photograph a transit of the moon by the ISS that was predicted ...
Reports on Events
Published: 12-18-2014 Hits: 2009
Some Lessons in Observational Astronomy
Published: 03-26-2017 Hits: 197
     For this past dark window two rewarding observing sessions graced my photon starved eyeball (make that eyeballs for the time I was using binoviewers) bringing to conclusion ...

  • Horsehead/Flame Nebula photo in home page banner is courtesy of Frank Colisimo
  • Website Background image is a modification of a Hubble Space Telescope Image of M27, the Dumbbell Nebula
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