Influence of nonuniform charge-coupled device pixel response on aperture photometry

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Title: Influence of nonuniform charge-coupled device pixel response on aperture photometry
Author: Kavaldjiev, Daniel; Ninkov, Zoran
Abstract: The extensive use of charge-coupled devices (CCDs) in astronomical imaging and spectroscopic applications has resulted in techniques being developed to correct for sensitivity variations attributable to the focal plane array detector. One normally overlooked effect is that these sensitivity variations also include intrapixel spatial effects that can influence measurements made with CCDs in certain circumstances. We demonstrate the influence of CCD pixel response nonuniformity on photometric measurements. An investigation is presented of how the relation between pixel size and the image size affects the photometric accuracy. Results are presented for a front-illuminated CCD array using an experimentally measured pixel sensitivity functions.
Description: RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/3026
Publishers URL: http://dx.doi.org/10.1117/1.1339199
Date: 2001-02

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