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Adaptation system of the Millimetron main mirror

The paper describes the design of the main mirror of the Millimetron space observatory and its adjustment system. It alsopresents the results of modeling the compensation of deviations caused by various factors (temperature, opening errors,etc.) to an individual panel and to the entire mirror. The authors provide the results of experimental adaptation of anindividual panel and development of a precision cryogenic actuator for the system adjustment.