Analyseur de front d'onde d'ordres inférieurs à modulation spatiale
|Abstract:||Direct imaging aimed at the detection of exoplanets raises new challenges in astronomical instrumentation. The use of high-contrast coronographs to do such tasks requires that the optical system as well as all atmospheric turbulance are corrected near the limit of diffraction in order to remove the light from the adjacent star and detect faint objects that could be near that star. These tight requirements on stability require the use of wavefront sensor specialised in the fast and accurate detection of low-order aberrations (typically pointing and focus errors) to achieve the contrast of 10|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||29 May 2019|
|Collection:||Thèses et mémoires|
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