Optimizing charge-coupled-device detector operation for optical astronomy

Computer Science – Performance

Scientific paper

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Astronomical Photometry, Charge Coupled Devices, Optical Measuring Instruments, Cameras, Charge Transfer, Optimization, Quantum Efficiency

Scientific paper

Two types of CCD detectors have been operated over the past several years: the three-phase thinned Texas Instruments 800 x 800 and the thinned RCA 320 x 512. Both detectors are operated in a slow-scan, cooled camera behind a variety of optical instruments at ground-based observatories, often involving low light levels. Emphasis is placed on optimizing the camera's operation with respect to quantum efficiency, readout noise, charge-transfer efficiency, dark current, full-well saturation, bias image flatness, residual image, and on-chip binning. Techniques for optimizing these properties are discussed. The camera system is described, and information about the performance of five operational CCDs is given.

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