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CCD linearity measurement by incremental binning (Conference Presentation)

Kaye, Stephen and Smith, Roger and Mao, Peter H. and Greffe, Timothée (2018) CCD linearity measurement by incremental binning (Conference Presentation). In: High Energy, Optical, and Infrared Detectors for Astronomy VIII. Proceedings of SPIE. No.10709. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 107090Z . ISBN 9781510619715.

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The traditional method for measuring CCD non-linearity using constant flux and variable exposure time is compared to a faster and potentially more accurate method that requires just two exposures at low intensity. Signal is varied by parallel-binning a successively greater number of lines. The binned image is compared to a conventional image with identical illumination, co-added digitally in the same pattern. This method requires no shutter calibration and is insensitive to illumination drift or charge transfer inefficiency. With some additional software effort, it can be arranged to tolerate illumination non-uniformity. We present data obtained by both methods for the 64 CD231-C6 outputs and discuss automated performance optimization. We find that the widely held assumption that non-linearity only affects high signals is incorrect when optimizing for minimum gain change over the full signal range, in which case slope increases with signal initially, then peaks in the mid-range before dropping again.

Item Type:Book Section
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Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:10709
Record Number:CaltechAUTHORS:20190823-134014738
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Official Citation:Stephen Kaye, Roger Smith, Peter H. Mao, and Timothée Greffe "CCD linearity measurement by incremental binning (Conference Presentation)", Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107090Z (10 July 2018);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98196
Deposited By: George Porter
Deposited On:26 Aug 2019 14:37
Last Modified:16 Nov 2021 17:37

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