Spectrometer optics Spectrometer Main Optics (SMO)[1] Spectrometer Pre Optics (SPO)[4] Focal Plane Arrays Input-Optics Calibration Module (IOC)[4] Pick-off Mirror[4] Calibration source for Imager[4] Contamination Control Cover (CCC)[4] CFRP hexapod Imager Image slicers Deck