The spectral resolution element size in grating mode is given in table 1. It is 0.29 m for the short wavelength detectors and 0.60 m for the long wavelength detectors.
The resolving power of the FP has not yet been measured in orbit, and we have therefore no grounds for changing the figure in the observers manual (figure 8 on page 11). Observation of a narrow line at 145 m give a resolving power of about 9000 at this wavelength, i.e. very close to the groound based values.