Potential of differential interferometry with AMBER from theoretical and laboratory studies

Martin Vannier; Romain Gueorguiev Petrov; Sylvie Robbe-Dubois; Yves Bresson; Stephane Lagarde; Bruno Lopez

doi:10.1117/12.459701

21 February 2003 Potential of differential interferometry with AMBER from theoretical and laboratory studies

Martin Vannier, Romain Gueorguiev Petrov, Sylvie Robbe-Dubois, Yves Bresson, Stephane Lagarde, Bruno Lopez

Proceedings Volume 4838, Interferometry for Optical Astronomy II; (2003) https://doi.org/10.1117/12.459701
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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.

Citation Download Citation

Martin Vannier, Romain Gueorguiev Petrov, Sylvie Robbe-Dubois, Yves Bresson, Stephane Lagarde, and Bruno Lopez "Potential of differential interferometry with AMBER from theoretical and laboratory studies", Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); https://doi.org/10.1117/12.459701

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