Primary transit photometry for TrES-3b as a function of the hours from the best-fit mid-transit time. From top to bottom: raw photometry (gray squares) along with the combined best-fit model (transit times detrending) (blue solid line). Black circles and error bars correspond to the detrended photometry, and the red continuous line to the best-fit transit model. Residuals are shown below. All quantities are artificially shifted to allow for visual inspection.