Astrophysics meetings are held in the classroom behind the Centennial Heritage Museum (formerly the Discovery Museum) on Harvard Ave. in Santa Ana starting at 7:30 PM.  Harvard is about 2 miles north of the I405 freeway, and intersects Fairview between Warner and Edinger.  Take Fairview to Harvard, turn west on Harvard, and then turn into the driveway on the western edge of the property, which goes through wrought iron gates.  Take the driveway to the back of the property, and the classroom is a one-story structure behind the parking lot.