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Shared constraints and specific characters in Very High Dynamics Imaging

Published online by Cambridge University Press:  28 May 2003

Claude Aime ,
Rémi Soummer  and
Y. Rabbia
Y. Rabbia*
Affiliation:
Observatoire de la Côte d'Azur, Av. Copernic, 06130 Grasse, France
*
[email protected]
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Abstract

Very High Dynamics Imaging rounds up various techniques that can be used to study the close environmentof a source which flux, comparatively very large, prevents to see the morphological featuresimmediately neighbouring the source.Several instrumental approaches have been devised in this purpose, among which apodisation, mask coronagraphy and nulling techniques. In view of applying them to various scientific programs, both shared constraints andspecific features of the approaches have to be identified. This is the subject of this paper,which also recalls basics principles. A new concept (EvWaCo) achieving coronagraphy by usingevanescent waves is briefly outlined.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 8: Astronomy with High Contrast Imaging , 2003 , pp. 65 - 78
Copyright
© EAS, EDP Sciences, 2003

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