Data processing for exoplanet detection using direct imaging
Abstract
This communication is devoted to data processing of images obtained using an extreme adaptive optics (AO) system and a coronagraph. Specific attention is given to the following degrading factors: the residuals of atmospheric turbulence after AO correction and the "side" effects of the coronagraph. Relying on a statistical modeling of the measurements a test based on short exposure images is proposed. This processing, which generalizes the dark-speckle technique, takes into account the "local" variance of the complex amplitude residuals and the deterministic response of the system (i.e. without atmospheric turbulence).
- Publication:
-
IAU Colloq. 200: Direct Imaging of Exoplanets: Science & Techniques
- Pub Date:
- 2006
- DOI:
- 10.1017/S1743921306009963
- Bibcode:
- 2006dies.conf..565F