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

Conference Paper

© 2016 SPIE. 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.

Full Text

Duke Authors

Cited Authors

  • Rasmussen, A; Guyonnet, A; Lage, C; Antilogus, P; Astier, P; Doherty, P; Gilmore, K; Kotov, I; Lupton, R; Nomerotski, A; O'Connor, P; Stubbs, C; Tyson, A; Walter, C

Published Date

  • January 1, 2016

Published In

Volume / Issue

  • 9915 /

Electronic International Standard Serial Number (EISSN)

  • 1996-756X

International Standard Serial Number (ISSN)

  • 0277-786X

International Standard Book Number 13 (ISBN-13)

  • 9781510602090

Digital Object Identifier (DOI)

  • 10.1117/12.2234482

Citation Source

  • Scopus