Sebastian lives in Buenos Aires, the capital city of Argentina. He first became a member back in 1998 when he found out about the AAVSO from a local astronomy club. He is an active observer and data-miner.
Sara has been working full time for part of each year at the AAVSO since 1990. Her interest in astronomy began in high school where she formed an astronomy club, began making her own telescope, and attended an astronomy camp at the University of Iowa.