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Proceedings Paper

Potential of differential interferometry with AMBER from theoretical and laboratory studies
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Paper Abstract

The differential phase yields high dynamics and/or super resolution information. This mode will be available with AMBER at VLTI in autumn 2003 and has a wide range of scientific applications. The goal of our study is to keep the instrumental effects under the level of fundamental noises. This might be achieved, with 2 telescopes, thanks to a proper stabilization of the chromatic instrumental effects and/or a fast calibration, which are both presented together with the expected residual chromatic effects. With (at least) 3 telescopes, closure phase with AMBER together with spatial modulation should allow to make low-resolution spectroscopy on many nearby EGPs, but would be restrictive for non-resolved objects.

Paper Details

Date Published: 21 February 2003
PDF: 9 pages
Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003);
Show Author Affiliations
Martin Vannier, Univ. de Nice-Sophia Antipolis (France)
Romain Gueorguiev Petrov, Univ. de Nice-Sophia Antipolis (France)
Sylvie Robbe-Dubois, Univ. de Nice-Sophia Antipolis (France)
Yves Bresson, Observatoire de la Cote d'Azur (France)
Stephane Lagarde, Observatoire de la Cote d'Azur (France)
Bruno Lopez, Observatoire de la Cote d'Azur (France)

Published in SPIE Proceedings Vol. 4838:
Interferometry for Optical Astronomy II
Wesley A. Traub, Editor(s)

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