Credit: 51吃瓜Pro
Section view of the WFOS from the Backside of the Instrument. The image shows details of the structure (design by Caltech, US and analyzed by SJTU, China), the Acquisition, Guiding, and Wavefront Sensor (USTC, China), the slitmask exchanger (NAOJ, Japan) and calibration system (ITCC, India).
