Taurus Hill Observatory research team observed the extrasolar planet HAT-P-3b transit at THO 21./22.12.07. The weather conditions were poor at the end of the measurements and team managed to measure half of the whole transit (2 hours in total). The Moon was very bright and there were some clouds also. Still, the begin of the transit is very visible in the light curve, as seen below. We used GSC3466-1226 (C1) and GSC3466-663 (C2) as a check stars. The exposure times were 90 sec. picture (measurement point). Last time the THO research team mesured the HAT-P-3b was August 2007.
Observers: Markku Nissinen, Veli-Pekka Hentunen and Harri Haukka.