EAS Publications Series
Volume 8, 2003Astronomy with High Contrast Imaging
|Page(s)||353 - 359|
|Published online||28 May 2003|
Claude Aime and Rémi Soummer (eds)
EAS Publications Series, 8 (2003) 353-359
Redundant versus non-redundant apertures for exoplanet detection
UMR 6525 Astrophysique, University of Nice Sophia-Antipolis,
06108 Nice Cedex 2, France
Using simplificative assumptions, we show that a redundant configuration of diluted apertures should permit an easier exoplanet detection than a non-redundant one. This result assumes that after coronagraphy the planet appears over an uniform background whose statistical fluctuation is the unique source of noise. The detection is made using a matched filter, cross-correlating the observed image with the telescope array PSF. In that case, the relevant parameter appears to be the integral of the modulus squared of the aperture MTF.
© EAS, EDP Sciences, 2003
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