| Issue |
EAS Publications Series
Volume 8, 2003
Astronomy with High Contrast Imaging
|
|
|---|---|---|
| Page(s) | 245 - 257 | |
| DOI | https://doi.org/10.1051/eas:2003068 | |
| Published online | 28 May 2003 | |
Astronomy with High Contrast Imaging
Claude Aime and Rémi Soummer (eds)
EAS Publications Series, 8 (2003) 245-257
Claude Aime and Rémi Soummer (eds)
EAS Publications Series, 8 (2003) 245-257
Adapted scale image subtraction for achromatic coronography
1
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