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Proceedings Paper

Calibrating gain, uniformity, linearity and noise of CCDs in the presence of the brighter-fatter effect (Conference Presentation)
Author(s): Daniel P. Weatherill

Paper Abstract

Dynamic charge collection effects (e.g. the "Brighter-Fatter" effect) are present in thick, deeply depleted CCDs. These effects can cause distortion of the point spread function, and correlations between nearby pixel values. Much has been written already about how to characterise and mitigate this effect. This presentation will focus on how the more standard performance parameters of a CCD (e.g. gain, noise, linearity, uniformity, apparent QE, full well) can be influenced by the brighter-fatter effect, and describe some methods of obtaining accurate measurements of these quantities whilst mitigating the impacts of correlated charge collection. These techniques include non-standard methods of processing standard calibration data (correcting gain and full well from flat field and point source data fusion) and/or different clocking schemes for the CCD (investigating how dithering, injected charge distributions, binning, TDI transfer curves might be used to disentangle more traditional charge collection and transfer performance from that due to the brighter-fatter effect) .

Paper Details

Date Published: 10 July 2018
Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107091I (10 July 2018); doi: 10.1117/12.2313425
Show Author Affiliations
Daniel P. Weatherill, Univ. of Oxford (United Kingdom)

Published in SPIE Proceedings Vol. 10709:
High Energy, Optical, and Infrared Detectors for Astronomy VIII
Andrew D. Holland; James Beletic, Editor(s)

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