7:30:00 PM – 9:30:00 PM The 4th session of the Beginners Astronomy Class provides a more indepth explanation of telescopes and how they operate. This is a technical discussion covering the physics behind the telescope. The Beginners Astronomy Class is held at the Heritage Museum of Orange County in Santa Ana. For details, please see the webpage on the Beginners Class, under “About OCA” and “Special Interest Groups”. Free and open to the public as well as members of OCA. Note: All who attend are invited to one of our monthly OC star parties as our guest. More