CHIME's hyperspectral imager (HSI): status of the optical model (OM) and AIT process

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CHIME’s hyperspectral instrument utilizes a four-mirror telecentric telescope to feed three distinct spectrometric subsystems for precise wide-range spectral imaging. An optical model is employed to manage the complex alignment requirements between detector arrays and spectrometer units, ensuring high spatial and spectral co-registration. This integration process is critical for maintaining the high modulation transfer function necessary for hyperspectral performance.