7 July 2004 Detecting and characterizing exoplanets with multicolor detector assemblies
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Proceedings Volume 5382, Second Backaskog Workshop on Extremely Large Telescopes; (2004) https://doi.org/10.1117/12.566102
Event: Second Backaskog Workshop on Extremely Large Telescopes, 2003, Backaskog, Sweden
Abstract
Detecting and characterizing exoplanets is one of the main science drives for extremely large telecopes. It requires a high-order (extreme) adaptive optics (ExAO) system combined with a coronagraph and a science camera optimized for efficient attenuation of point spread function (PSF) residuals induced by atmospheric speckles and high-frequency quasi-static aberrations. Spectral differential imaging is a very promising technique for attenuating PSF residuals. High-contrast imaging observations with the TRIDENT camera at the AO focus of the Canada-France-Hawaii Telescope (CFHT) have shown that companion detection using differential imaging is seriously compromised by very small amount of non-common path wave front errors between the different optical channels of the camera. Such problems can be eliminated with a new type of detector assembly: a multi-color detector assembly (MCDA). This paper describes the MCDA concept along with numerical simulations predicting the combined performance of an ExAO system with a Lyot coronagraph and an MCDA on a segmented 20m telescope.
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Rene Doyon, Rene Doyon, David Lafreniere, David Lafreniere, Christian Marois, Christian Marois, Rene Racine, Rene Racine, Daniel Nadeau, Daniel Nadeau, } "Detecting and characterizing exoplanets with multicolor detector assemblies", Proc. SPIE 5382, Second Backaskog Workshop on Extremely Large Telescopes, (7 July 2004); doi: 10.1117/12.566102; https://doi.org/10.1117/12.566102
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