EAS Publications Series
Volume 8, 2003Astronomy with High Contrast Imaging
|Page(s)||245 - 257|
|Published online||28 May 2003|
Claude Aime and Rémi Soummer (eds)
EAS Publications Series, 8 (2003) 245-257
Adapted scale image subtraction for achromatic coronography
Dept. Fresnel, Observatoire de la Côte d'Azur, BP. 4229,
06304 Nice Cedex 4, France
2 Dept. Cassini, Observatoire de la Côte d'Azur, BP. 4229, 06304 Nice Cedex 4, France
The detection of a faint companion to a star with achromatic coronography and adaptative optics is only limited by the residual speckles. We study a method to increase the detectability of the companion, based on the difference of two images taken in two different wavelengths, after suitable rescaling.
© EAS, EDP Sciences, 2003
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