2024/12/13 by Iryna Afanasieva, Afanasieva, I., V. Murzin +7
Engineering · #CCD and CMOS Imaging Sensors #Calibration and Measurement Techniques #Infrared Target Detection Methodologies
paper · pdf · doi:10.48550/arxiv.2412.10109
The pCam6060 photodetecting system was developed at SAO RAS and is based on\nthe GSENSE6060BSI photodetector manufactured by GPixel (China) with a frame\nformat of 6144x6144 active pixels and a pixel size of 10 mkm. The readout speed\nreached 11 fps. The back-illuminated detector has a wide spectral range of\n200-1040 nm with a minimum quantum efficiency (QE) of 10% and maximum\nsensitivity of 95% at 580 nm. The quantum efficiency in the near-infrared range\nwas 58% at 850 nm. The pCam6060 system controller implements a mode of\nsimultaneous image readout via two 12-bit video channels with different gain\nand their subsequent combination in the controller into a single frame with an\nextended 16-bit dynamic range. This method simultaneously achieves a low\nreadout noise level (about 3 e-) in the high-gain channel and a large dynamic\nrange (full well capacity of about 100000 e-) in the low-gain channel.\nBack-illuminated CMOS detectors, unlike front-illuminated devices, do not have\nthe effect of long-term preserving the residual charge from previous exposures,\nwhich makes them suitable for recording faint objects in photometric\nlong-exposure observation methods. Communication between the host computer and\nthe camera was carried out via a fiber optic line at distances of up to 50 m.\nVideo data are recorded on the computer hard drive in real-time. The pCam6060\nphotodetecting system is designed for astronomical applications and has a\nmoisture-proof design.\n