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.    All of our star parties, presentations, and meetings  are free and open to the public. 

Last Call:  It's Time to Renew Your Membership for 2017!

Click here to renew

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

Click here to see certificate

San Mateo County Astronomical Society Upcoming Activities

  • Crestview Park Star Parties                  Saturday    8/19, 26 
  • Eclipse Viewing at CSM Observatory   Monday     8/21/2017  Need Volunteers!
  • General Meeting and Presentation     Friday         9/1/2017
  • Board Meeting                                        Tuesday     9/12/2017
  • Science and Astronomy Festival          Saturday    9/30/2017  Need Volunteers!