ROBBE-DUBOIS , Sylvie

The observable quantities in optical interferometry, which are the modulus and the phase of the complex visibility, may be corrupted by parasitic fringes superimposed on the genuine fringe pattern. These fringes are due to an interference phenomenon occurring from stray light effects inside an interferometric instrument. We developed an...

MATISSE est un instrument de 2nde génération du VLTI. C'est un instrument spectro-imageur couvrant les bandes L,M et N dans l'infrarouge moyen (de 3 à 13 µm). Ce rapport à l'ESO décrit le commissioning de MATISSE et présente l'ensemble de ses performances. Les performances contractuelles de MATISSE sont complétées par une première évaluation du...

While doing optical study in an instrument similar to the interferometers dedicated to the Very Large Telescope (VLT), we have to take care of the pupil and focus conjugations. Modules with artificial sources are designed to simulate the stellar beams, in terms of collimation and pupil location. They constitute alignment and calibration tools....

The detection and characterization of extrasolar planets with SPHERE (Spectro Polarimetric High contrast Exoplanet REsearch) is challenging and in particular relies on the ability of a coronagraph to attenuate the diffracted starlight. SPHERE includes 3 instruments, 2 of which can be operated simultaneously in the near IR from 0.95 to 1.8...

International audience

International audience

International audience