Potential of differential interferometry with AMBER from theoretical and laboratory studies

Details Potential of differential interferometry with AMBER from theoretical and laboratory studies Potential of differential interferometry with AMBER from theoretical and laboratory studies

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4838..934v&link_type=abstract

Interferometry for Optical Astronomy II. Edited by Wesley A. Traub . Proceedings of the SPIE, Volume 4838, pp. 934-942 (2003).

Astronomy and Astrophysics

Astronomy

1

Scientific paper

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.

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