Fig. 1

Diagram of the camera system. The incident light travels through a polarization modulator and an analyzer. It is detected by a H2RG, and analog-to-digital conversion is carried out by a SIDECAR. They are installed in a cryogenic dewar. The digitized data are transferred from the SIDECAR to a PC relayed by a MACIE card via CameraLink. A timing controller receives the row clock from the MACIE card and controls the synchronous actions among polarization modulation, image acquisition, and data transfer