On May 22, 2010, LPL hosted its first ever open day at the Catalina Observatories atop Mt. Lemmon. Approximately 100 guests spent the day learning about LPL's past, present, and future, including a history of telescope observations on Mt. Lemmon and Mt. Bigelow. Featured activities included tours of the Catalina Sky Survey's 60-inch telescope, a presentation about the HiRISE camera, and a walking tour of the old Air Force Station. Visitors got a lesson on meteorites and the chance to handle a 4.5 billion year old meteorite.

There were also exhibits and displays about mountain hummingbirds and the geology of the Catalinas. The event was a big success and lots of fun for everyone! (Photos below courtesy of Steve Larson.)