vendredi 24 juin 2016, par Richard Frazin (University of Michigan)
Mardi 5 juillet 2016 à 14h00 , Lieu : Salle de conférence du bâtiment 17
A new generation of telescopes with mirror diameters of 20 m or more, called extremely large telescopes (ELTs) has the potential to provide unprecedented imaging and spectroscopy of exo-planetary systems, if the difficulties in achieving the extremely high dynamic range required to differentiate the planetary signal from the star can be overcome to a sufficient degree. I will argue that millisecond imaging in the science camera could potentially lead to a breakthrough in the field. My approach combines the wavefront sensor data stream with simultaneous science camera exposures to simultaneously determine the planetary image and the non-common path aberrations of the optical system. I emphasize that this approach is not a form of differential imaging, such as ADI or SDI.