The Calibration and Test Unit of MAORY/MORFEO: analyses and performance evaluation

MORFEO (formerly known as MAORY) is the Multi-conjugate adaptive Optics Relay for ELT Observations. It will be firstly used by MICADO (Multi-AO Imaging CamerA for Deep Observations), a near-infrared high-angular resolution imager, to compensate aberrations and provide high-Strehl images within a 53''x53'' Field of View. The Calibration Unit (CU), providing suitable light sources, will enable MORFEO to run calibration templates, such as Wavefront Sensor (WFS), Non-Common-Path Aberration and tomographic reconstructor calibrations, as well as verification and test procedures, in standalone mode, drastically reducing the amount of required night-time for such operations. The CU will be also used to ease the alignment of MORFEO and to test and verify its performances (during the AIV phase). The requirements and constraints imposed at system and subsystem level have necessitated an in-depth study of every aspect of the design already in its preliminary phase. The main analyses carried out to assess the performances and to validate the preliminary design are presented here.