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MODHIS subsystem location concepts

October 19th, 2022

Credit: TMT International Observatory

MODHIS subsystem location concepts. The MODHIS Support Structure, Rotator and On-Instrument Wavefront Sensor (SRO) and Front-End Instrument (FEI) are located on the top port of the TMT facility AO system NFIRAOS. The MODHIS Fiber Delivery System (FIB) transports the light to the Spectrograph (SPEC). SPEC and Calibration system (CAL) will be placed in a TMT lab located in the pier in order to provide a stable environment for measuring Precision Radial Velocities.