High Resolution Spectroscopy of Procyon

PV Procyon is a nearby, old star at the transition from the main sequence tothe subgiant regime. Its corona shows features consistent with rather coolplasma, partially below 1 MK. This observation will test the performance of theRGS at its soft end. Procyon will be observed for 100 ksec. One MOS will operatein the Window2 mode, while the PN will use the SML window. To avoid opticalcontamination, thick filters will be used.