Manufacturing, integration, and test results of the MATISSE cold optics bench
2014
MATISSE is the second-generation mid-infrared interferometric spectrograph and imager for ESO’s Very Large
Telescope Interferometer (VLTI). NOVA-ASTRON is responsible for the Cold Optics Bench (COB), representing the
last part of the optics train where the four beams are re-arranged, spectrally dispersed and combined.
The COB consist of two sister units, one for the LM-band, one for the N-band, which were successively completed at
NOVA-ASTRON in autumn 2013 and spring 2014. The LM-band COB is under cryogenic test in its cryostat at
MPIA/Heidelberg; the N-band COB finished cryogenic tests and has been installed at OCA/Nice for integration together
with the Warm Optics. This paper focuses on the manufacturing, integration and test results of the COBs, and gives an overview of the current status.
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