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Warm calibration unit of the mid-infrared E-ELT instrument METIS: overview and current status of the project
December 2020 • Monika Rutowska, T. K. Sharma, Michael Wiest, Sabine Graf, C. Straubmeier, Steffen Rost, Lucas Labadie, A. Eckart, L. Burtscher, Tibor Agócs, Dirk Le…
The warm calibration unit (WCU) is one subsystem of the future METIS instrument on the European Extremely Large Telescope (E-ELT). Operating at daytime temperature, the WCU is mounted above the main cryostat of METIS and will be employed as calibration reference for science observations, as well as for verification and alignment purposes during the AIT phase. The WCU is designed and constructed at the University of Cologne, partner in the METIS consortium. The WCU, together with the full METIS instrument, went rec…