It's spring and time to get back out and about with public events, known as Star Parties. First, the monthly lecture and star party on Mt. Tam opens for the season this Saturday April 5th. Mt. Tam is a great spot high above the lights of San Francisco where the San Francisco Amateur Astronomers (SFAA) and the Friends of Mt. Tam collaborate with the State Park System to create an unforgettable evening of science combining lectures, star tours and telescope viewing. The events take place approximately every four weeks through October, so dress warmly and come out for a fun evening.Ritz Carlton deckLast year I tried out an experiment doing star parties at the Ritz Carlton in Half Moon Bay and it went well, so I am back this spring conducting star parties and telescope viewing at this magnificent hotel on the coast. Come out for an elegant evening in the hotel and outstanding views of the night sky on the deck. I'll be there twice in April (4th and 25th), and twice in May (2nd and 16th). Hope to see you there.