Influence of non-uniform charge-coupled device pixel response on aperture photometry

Details Influence of non-uniform charge-coupled device pixel response on aperture photometry Influence of non-uniform charge-coupled device pixel response on aperture photometry

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001opten..40..162k&link_type=abstract

Optical Engineering 40(02), 162-169, Donald C. O'Shea; Ed.

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The extensive use of charge-coupled devices (CCDs) in astronomical imaging and spectroscopic applications ha resulted in techniques being developed to correct for sensitivity variations attributable to the focal plena 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.

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