On April 2 and 3 as part of the "100 Hours of Astronomy" event, I took part in two of three nights of star parties in San Francisco. It was fun and I enjoyed meeting new people and sharing the sky with them. I'll be posting more of this on the "100 hours" website next week. Meanwhile, here are two photos (courtesy of Rick Prelinger) that he took with a simple camera phone and a time lapse exposure. With a bright moon directly overhead, the scene was lit exclusively by moonlight (well, ok, with the exception of some headlights in the parking lot) and looks strangely surreal but the images capture the essence of the star party. You can see some stars in the images. Very cool!