MICADO, the near-infrared Multi-AO Imaging Camera for Deep Observations and designated ELT first-light instrument, will require dedicated software tools for observation preparation. In this context, the European Southern Observatory is currently employing a uniform and distributed architecture, which expects business logic to be provided as microservices on an ESO host. This particularly applies to the MICADO-specific features, too: Automatic guide star selection, AO performance calculation, and telescope offset permissibility checks are first candidates for a microservice implementation here. We present our approach of adapting MICADO tasks to ESO's distributed architecture and share our view on the new paradigm in general.
The Main Selection Mechanism (MSM) is the cryogenic subsystem of the Multi-AO Imaging Camera for Deep Observations (MICADO) which allows to switch between the operational modes (imaging, spectroscopy, calibration) of the instrument. MICADO is one of the first light instruments for the ESO Extremely Large Telescope (ELT) and operates in the near-infrared wavelength range. The MSM is located inside the MICADO cryostat and it operates under vacuum conditions and cryogenic temperatures (`~82K). 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. In this paper we give an overview of the final design of the MSM, which was presented at the MICADO final design review (FDR) in October 2021.
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