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High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response

Rasmussen, Andrew
Guyonnet, Augustin; Lage, Craig; Antilogus, Pierre; Astier, Pierre; Doherty, Peter; Gilmore, Kirk; Kotov, Ivan; Lupton, Robert; Nomerotski, Andrei; O'Connor, Paul; Stubbs, Christopher; Tyson, Anthony; Walter, Christopher
Andrew Rasmussen ; Augustin Guyonnet ; Craig Lage ; Pierre Antilogus ; Pierre Astier, et al. " High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response ", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99151A (August 1, 2016); doi:10.1117/12.2234482; http://dx.doi.org/10.1117/12.2234482
Publication Date: 
Monday, August 1, 2016
Type: 
Journal Articles
SPIE
Citable: 
no
Category: 
SPIE Proceedings
Volume: 
9915
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. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Publication-107
Reviewed Under: 
LSST Project Publication Policy
Bibtex reference: 
@proceeding{doi:10.1117/12.2234482, author = {Rasmussen, Andrew and Guyonnet, Augustin and Lage, Craig and Antilogus, Pierre and Astier, Pierre and Doherty, Peter and Gilmore, Kirk and Kotov, Ivan and Lupton, Robert and Nomerotski, Andrei and O'Connor, Paul and Stubbs, Christopher and Tyson, Anthony and Walter, Christopher}, title = { High fidelity point-spread function retrieval in the presence of electrostatic, hysteretic pixel response }, journal = {Proc. SPIE}, volume = {9915}, number = {}, pages = {99151A-99151A-19}, 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. }, year = {2016}, doi = {10.1117/12.2234482}, URL = { http://dx.doi.org/10.1117/12.2234482}, eprint = {} }

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