XMM-Newton Science Analysis System
lccorr (lccorr-2.22.2) [xmmsas_20050815_1803-6.5.0]
Meta Index / Home Page / Description / Exposure corrections in detail:
This enables evaluation of the vignetting function, which is a measure of the decrease in efficiency of the XMM telescope mirror with increase in the off-axis angle
of the source.
XMM-Newton SOC/SSC -- 2005-08-16