Publications
of the
MPIfR
Optical & Infrared
Interferometry Group
K.-H. Hofmann, R.G. Petrov, F. Malbet
and A. Richichi:
Amber: the near infrared - red focal
instrument for the VLTI
Astronomische Gesellschaft Meeting Abstracts
(AGM 14, L06)
Talk presented at the Annual Scientific Meeting of the Astronomische
Gesellschaft
at Heidelberg, September 14-19, 1998
Abstract.
AMBER is the near infrared focal instrument of the VLTI.
Its operation will start in 2001 with two 8 meter
telescopes (UTs) but it will eventually permit to combine 3 or even 4
beams
from (UTs) and/or from 1.8 m
auxiliary telescopes (ATs) and to perform phase closure imaging.
In 2003, the spectral coverage will be
extended to include the H alpha region.
The instrument is built by a consortium of French, Italian and
German Institutes.
The main features of the VLTI + Amber ensemble are:
partially correcting adaptive optics and spatial
filtering in each beam, fringe tracking, multi-axial beam combiner
and spectrograph dispersing the fringes
on a mosaic detector.
The reference star for the wavefront and the fringe sensors can be up
to
25 arcseconds away from the science source.
The scientific program of such an instrument is quite wide.
A preliminary selection of the first objectives contains the direct
detection
of hot massive planets, AGNs and Young Stellar Objects.
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