AMBER is the General User near-infrared focal instrument of the Very Large
Telescope interferometer. Its specifications are based on three key program
s on Young Stellar Objects. Active Galactic Nuclei central regions, masses
and spectra of hot Extra Solar Planets. IL has an imaging capacity because
it combines up to three beams and very high accuracy measurement are expect
ed from the spatial filtering of beams by single mode fibers and the compar
ison of measurements made simultaneously in different spectral channels. (C
) 2001 Academie des sciences/Editions scientifiques et medicals Elsevier SA
S.