In-orbit calibration of vignetting in XMM-Newton EPIC
Abstract
Description
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.
4 pages, 6 figures. Submitted to proceedings of "New Visions of the X-ray Universe", held ESTEC, Noordwijk, Netherlands Nov 2001
4 pages, 6 figures. Submitted to proceedings of "New Visions of the X-ray Universe", held ESTEC, Noordwijk, Netherlands Nov 2001