Important Proposed Change to the SDAA Articles of Incorporation

 Written approval by SDAA members required!

The proposed amendment to the SDAA articles would allow our Tierra del Sol (TDS) observing site to be exempt from real estate taxes. This is necessary because of some recent changes to the California property tax requirements. Please download this document for a more complete explanation and a form to sign and return. According to the bylaws we need a written approval by a majority of members to change the articles, so please return the form as soon as possible by mail or email.

We thank our donors for making the 2014 Banquet a great success!

The San Diego Astronomy Association (SDAA) is a non-profit educational organization established and incorporated in 1963. The purpose of the SDAA is to further the education of its members and the general public in the subjects of astronomy and the related space and physical science, and to increase public awareness and enjoyment of these sciences. MORE...


Why not become a contributing member of one of the largest and most active amateur astronomical associations in the United States. All members of the SDAA receive an informative monthly newsletter. As an added benefit, subscription to Sky & Telescope, Astronomy, and Odyssey magazines, along with books, sky charts, etc., are available to members at substantial discounts. MORE...

Outreach: Outreach

The SDAA holds regularly scheduled activities and various educational Outreach events . A monthly lecture Program and general meeting is presented for its members and the public at Mission Trails Regional Park. "Star Parties" are held for schools and youth groups, and members meet monthly at Mission Trails Regional Park for presentations and public stargazing.  MORE..


Public Star Parties are held during the dark of the moon at Tierra del Sol, the Association's dark-sky observing site in rural East San Diego County. The Club 22" Lipp Ritchey-Chretien reflector is available for club members and hosted during Public Star Parties for visitors. Plus, the Observatory Director periodically hosts a training class for the Club scope. MORE...

Julian Starfest
Our annual star party and astronomy exhibition held on new moon weekend each August in the dark skies of Julian, CA, amongst the grape vines and apple orchards of the Menghini Winery.
For more go to

Tierra del Sol Clear Sky Chart


Promising the Sun, the Moon and the Stars...
...and delivering!