Submillimag Photometry of Transiting Exoplanets with an Orthogonal Transfer Array

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Orthogonal transfer array detectors can shift accumulated charge both horizontally and vertically during an exposure to produce broad, stable point spread functions (PSF) that are particularly well suited for transit photometry. We used the PSF-shaping capability of OPTIC (Orthogonal Parallel Transfer Imaging Camera) mounted on the UH 2.2m telescope to achieve a photometric precision of 0.7 mmag per minute (5.5e-4 per sample) for observations of the transiting exoplanetary systems WASP-10 and TrES-3. We present our data reduction procedures, light curves and refined system parameters.

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