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Proceedings Paper

High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response
Author(s): Andrew Rasmussen; Augustin Guyonnet; Craig Lage; Pierre Antilogus; Pierre Astier; Peter Doherty; Kirk Gilmore; Ivan Kotov; Robert Lupton; Andrei Nomerotski; Paul O'Connor; Christopher Stubbs; Anthony Tyson; Christopher Walter
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Paper Abstract

We employ electrostatic conversion drift calculations to match CCD pixel signal covariances observed in at field exposures acquired using candidate sensor devices for the LSST Camera.1, 2 We thus constrain pixel geometry distortions present at the end of integration, based on signal images recorded. We use available data from several operational voltage parameter settings to validate our understanding. Our primary goal is to optimize flux point spread function (FPSF) estimation quantitatively, and thereby minimize sensor-induced errors which may limit performance in precision astronomy applications. We consider alternative compensation scenarios that will take maximum advantage of our understanding of this underlying mechanism in data processing pipelines currently under development. To quantitatively capture the pixel response in high-contrast/high dynamic range operational extrema, we propose herein some straightforward laboratory tests that involve altering the time order of source illumination on sensors, within individual test exposures. Hence the word hysteretic in the title of this paper.

Paper Details

Date Published: 1 August 2016
PDF: 19 pages
Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99151A (1 August 2016); doi: 10.1117/12.2234482
Show Author Affiliations
Andrew Rasmussen, SLAC National Accelerator Lab. (United States)
Augustin Guyonnet, LPHNE/IN2P3/CNRS, UPMC (France)
Craig Lage, Univ. of California, Davis (United States)
Pierre Antilogus, LPHNE/IN2P3/CNRS, UPMC (France)
Pierre Astier, LPHNE/IN2P3/CNRS, UPMC (France)
Peter Doherty, Harvard Univ. (United States)
Kirk Gilmore, SLAC National Accelerator Lab. (United States)
Ivan Kotov, Brookhaven National Lab. (United States)
Robert Lupton, Princeton Univ. (United States)
Andrei Nomerotski, Brookhaven National Lab. (United States)
Paul O'Connor, Brookhaven National Lab. (United States)
Christopher Stubbs, Harvard Univ. (United States)
Anthony Tyson, Univ. of California, Davis (United States)
Christopher Walter, Duke Univ. (United States)

Published in SPIE Proceedings Vol. 9915:
High Energy, Optical, and Infrared Detectors for Astronomy VII
Andrew D. Holland; James Beletic, Editor(s)

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