NRCO-108: Long term energy scale of PN Large Window Mode

There are not enough suitable EPICpn observations in Large Window mode inCalClosed or sky sources with Fe Kalpha line at 6.4 keV to derive a correctionfor the longterm CTI for this mode above 6 keV.The objective of this observation is to match an early observation of Kepler SNR(0084100101, rev 229, 10 March 2001) with a new observation in order toestablish the longterm behaviour the CTI at 6.4 keV. This can potentially beextended to other lines in the Kepler SNR at lower energies, e.g. Si K line at1.8 keV and S K line at 2.4 keV. The setup should match as much as possible thatof the original observation 0084100101. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]