The San Mateo County Astronomical Society is dedicated to bringing the wonders of space and astronomy to the residents of San Mateo County.

We are glad you stopped by!

Please join us at one of our upcoming events.    Our star parties, presentations, and meetings  are free and open to the public. 

SMCAS was honored for its valuable  contributions to its community by NASA Space Place: 

Click here to see certificate

     Join our email lists to get announcements of meetings and upcoming events: 

          https://groups.io/g/SMCAS/              Members only events

          https://groups.io/g/SMCASnews/     Events open to the public

San Mateo County Astronomical Society Upcoming Activities​          


          Subject to cancellation 

SMCAS received a certificate of appreciation from NASA for its contribution to the 2017 Total Solar Eclipse.

Click here to see certificate