Interfero Coronagraphy at O.C.A.

PierreBaudoz¹, YvesRabbia², and JeanGay¹

1- Observatoire de la Côte d'Azur (O.C.A.), Département Fresnel, URA CNRS 1361, BP 04229, 06304 Nice Cedex 4, France

2- O.C.A., Dpt. Fresnel, URA CNRS 1361, avenue Copernic, 06130 Grasse, France

Abstract:

We report on an interfero-coronagraph under developement at Observatoire de la Côte d'Azur (O.C.A.) which should allow, when coupled with adaptive optics on large telescope, to detect faint companion and/or circumstellar features as close as the first Airy's ring with magnitude difference roughly up to 10.

Key Words : coronagraphy, interferometry, double stars, circumstellar matter

• Objectives
• Principles
• Achromaticity
• Conclusion
• References