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In-orbit calibration of vignetting in XMM-Newton EPIC

D. H. Lumb

astro-pharXiv:astro-ph/0203278

Abstract

We briefly describe the in orbit measurements of the mirror vignetting, using observations of SNR G21.5-09. The instrument features which complicate these measurements are briefly described, and we show the spatial and energy dependences, outlining assumptions made in deriving the eventual agreement between theory and measurement.

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