• OCA: Observatoire de la Côte d’Azur in Nice, France (PI institute)
  • MPIA: Max-Planck-Institut für Astronomie, Heidelberg, Germany
  • NOVA-ASTRON in Dwingeloo, Netherlands
  • Leiden University, Netherlands
  • MPIfR: Max-Planck-Institut für Radioastronomie in Bonn, Germany

Header image 1362407663

The MATISSE instrument

MATISSE (Multi-Aperture mid-Infrared SpectroScopicExperiment) is a second-generation interferometry instrument for the ESO Very Large Telescope Interferometer (VLTI). The interconnection of three or four telescopes makes it possible to capture visibilities and closure phases and allows pictures in the mid infrared range to be reconstructed. The maximum baseline length of 200 m (the distance between two telescopes) makes for a high resolution in the generated images.

MATISSE operates in the wavelength range from 2.8 µm to 13 µm. The combined light of the telescopes is spectrally dispersed in order to measure the wavelength dependence of the visibility and closure phase. Two imaging sensors are used to cover the wide wavelength range. One imaging sensor (HAWAII/2RG) covers the wavelength range of the L and M bands (2.8 µm to 5.2 µm), and the other imaging sensor (Aquarius) covers the N band (8 µm to 13 µm). The HAWAII 2RG imaging sensor features low readout noise, while the Aquarius imaging sensor provides a high readout rate. The Aquarius imaging sensor provides precise measurements despite the high thermal background radiation.


Test Object classes:
Active Galactic Nuclei,
protoplanetary disks,
evolution of planetary systems,
birth of massive stars,
environment of hot and evolved stars

Atmosphere Atmosphere

Telescope Telescopes:

Delay Line Delay Lines
ESO Delay Lines
Optic Optics:
Warm and cold optics
Image sensor Imaging sensors:
Electronic Electronics:
ESO NGC (Next Generation Controler)
Online Software Instrument Control Software:
MATISSE DCS (Detector Control Software) developed by our group
Reduktion Software Data Reduction Software:
MATISSE DRS (Data Reduction Software)
partly developed by our group
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