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Proceedings Paper

Gain determination of non-linear IR detectors with the differential photon transfer curve (dPTC) method
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Paper Abstract

Conversion gain is a basic detector property which relates the raw counts in a pixel in data numbers (DN) to the number of electrons detected. The standard method for determining the gain is called the Photon Transfer Curve (PTC) method and involves the measurement the change in variance as a function of signal level. For non-linear IR detectors, this method depends strongly on the non-linearity correction and is therefore susceptible to systematic biases due to calibration issues. We have developed a new, robust, and fast method, the differential Photon Transfer Curve (dPTC) method, which is independent of non-linearity corrections, but still delivers gain values similar in precision but higher in accuracy.

Paper Details

Date Published: 29 July 2016
PDF: 9 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99045U (29 July 2016); doi: 10.1117/12.2233203
Show Author Affiliations
Armin Rest, Space Telescope Science Institute (United States)
Bryan Hilbert, Space Telescope Science Institute (United States)
Jarron M. Leisenring, The Univ. of Arizona (United States)
Karl Misselt, The Univ. of Arizona (United States)
Marcia Rieke, The Univ. of Arizona (United States)
Massimo Robberto, Space Telescope Science Institute (United States)


Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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