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Proceedings Paper

Radiometric and noise characteristics of SI-1920HD cameras built from the AltaSens ProCamHD 3560 FPA
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Paper 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).

Paper Details

Date Published: 17 September 2007
PDF: 11 pages
Proc. SPIE 6690, Focal Plane Arrays for Space Telescopes III, 66900I (17 September 2007); doi: 10.1117/12.734704
Show Author Affiliations
Robert Kessel, Naval Research Lab. (United States)
William J Scharpf, Naval Research Lab. (United States)
David M. Huber, Research Support Instruments, Inc. (United States)
Christopher J. Rollins, Research Support Instruments, Inc. (United States)
Bryan Dorland, U.S. Naval Observatory (United States)
Greg S. Hennessy, U.S. Naval Observatory (United States)
Bertrand E. Plourde, Assurance Technology Corp. (United States)

Published in SPIE Proceedings Vol. 6690:
Focal Plane Arrays for Space Telescopes III
Thomas J. Grycewicz; Cheryl J. Marshall; Penny G. Warren, Editor(s)

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