Research Article

The OAdM Robotic Observatory

Figure 4

Transit light curve of the HAT-P-1b exoplanet obtained using the ICAT pipeline. 360 images were taken on November 30, 2007 at the OAdM, with the Johnson V filter. Calibration images were also taken and used for image correction. This figure also shows the instrumentation quality: a photometric dispersion of 0.4% is obtained at flat parts of the curve. Flat-fielding errors and scintillation are the main contributions to this dispersion, which is expected to be reduced up to a 0.2% when calibration tasks are finished. In contrast, the photon noise shows to have a smaller effect. The increasing noise at the end of the observation is because the low altitude of the target. The gap during the transit was produced by an interruption of the observation sequence.