The MICADO first-light imager for the ELT: cryogenic and ambient performances of the main selection mechanism

Le résumé fourni par la source

The Main Selection Mechanism (MSM) is the cryogenic mechanism that will allow to switch between the 4 operational modes of MICADO, the first light instrument for the ESO Extremely Large Telescope (ELT). Located inside the MICADO cryostat, the mechanism consists of a main support structure and a rotating platform, where the MICADO Low Resolution Imager, Spectrometer and Pupil Imager modules are located. Manufacturing and procurement for the MSM components was completed in 2025. A first integration of the MSM was performed as a "laboratory setup" for first verification of its functionality and performances. In this paper we present the results of testing the MSM performances and functionality at ambient conditions. In addition, we present the results of cryogenic functionality test of the final integrated and aligned cryogenic mechanism, performed before hand-over of the MSM to the MICADO Project lead Institute, MPE, for its integration inside the instrument cryostat.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.