Observation of extrasolar planets by using the transit method in public observatory

Abstract

We develop an observation system for the extrasolar planets by using the transit method and perform verification experiments of the system in cooperation with the municipal Kihara observatory in Nayoro City, Hokkaido. Advantage of public observatories is to keep relatively long observation time of the telescopes than those belong to major research institutes. We constructed the observation system with equipments of both organizations. As a verification experiment of this system, we observed a extrasolar planet TrES-1_b to which the planet parameter and the date of transit were well-known. The results show that the time evolution of the magnitude of the fixed star is consistent to the previous study (Alonso et al., 2004) by using same observation method.