17 September 2007 Radiometric and noise characteristics of SI-1920HD cameras built from the AltaSens ProCamHD 3560 FPA
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Abstract
This paper presents the radiometric and noise characteristics of 12-bit SI-1920HD cameras built from the AltaSens ProCamHD 3560 FPA as a function of integration time and temperature. Our measurements are for two integration time regions: 1 to 50 millisecond, which is standard for video operation; and 1 to 240 seconds, of possible use for stellar observations. For 1 to 50 millisecond integration times, the cameras are extremely linear with a Gaussian-like dark frame. As we increased to seconds-long integration times, the camera initially remains radiometrically linear, but develops a dark frame with the vast majority of pixels at dn=5. Further increases in integration time eventually result in a saturated dark frame with all pixels at dn=4095. Reducing the operating temperature to -7.2°C increased the integration times at which the camera's two transitions occur by a factor of 20. The calibration parameters determined from our measurements were applied to the image data collected by Dorland et al. (these proceedings).
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Robert Kessel, Robert Kessel, William J Scharpf, William J Scharpf, David M. Huber, David M. Huber, Christopher J. Rollins, Christopher J. Rollins, Bryan Dorland, Bryan Dorland, Greg S. Hennessy, Greg S. Hennessy, Bertrand E. Plourde, Bertrand E. Plourde, } "Radiometric and noise characteristics of SI-1920HD cameras built from the AltaSens ProCamHD 3560 FPA", Proc. SPIE 6690, Focal Plane Arrays for Space Telescopes III, 66900I (17 September 2007); doi: 10.1117/12.734704; https://doi.org/10.1117/12.734704
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