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- W1991607949 abstract "The <i>Chandra X-ray Observatory</i> point spread function (PSF) is a complex function of source position and energy. On-orbit calibration observations with sufficient S/N sample only a small fraction of the possible parameter space, and are complicated by detector systematics. Thus, the standard method of analyzing <i>Chandra</i> data uses the standard <i>Chandra</i> optics model as a reference. The optics model accurately simulates the telescope's PSF, but as it is a raytrace based technique, it can be time-consuming to run and is not always appropriate for a given analysis task. A simple parameterization of the PSF would be useful for many analysis purposes, in many cases obviating the need for users to run lengthy raytraces. We present an approach to a simple PSF parameterization of off-axis point sources, discussing its applicability to analysis of <i>Chandra</i> observations in light of the complicated PSF structure. We also present some results of our PSF parameterization and discuss its accuracy." @default.
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- W1991607949 date "2004-02-03" @default.
- W1991607949 modified "2023-09-27" @default.
- W1991607949 title "Parameterization of the Chandra point spread function" @default.
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- W1991607949 doi "https://doi.org/10.1117/12.509411" @default.
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