A Goddard High Resolution Spectrograph atlas of echelle observations of the HgMn star chi Lupi

Observations of the ultra-sharp-lined, chemically peculiar star chi Lupi ta ken by the Goddard High Resolution Spectrograph in echelle mode are present ed. Thirty-six intervals of the spectral region between 1249 and 2688 Angst rom are covered with resolving powers in the range 75,000-93,000. Line iden tifications are provided, and the observed spectra are compared with synthe tic spectra calculated using the SYNTHE program and associated line lists w ith changes to the line lists. The significance of these spectra for the ch i Lupi Pathfinder Project and the closely related atomic physics effort is discussed in a companion paper.