The ORFEUS II Echelle spectrum of HD 93521: A reference for interstellar molecular hydrogen

During the second flight of the ORFEUS-SPAS mission in November/December 1996, the Echelle spectrometer was used extensively by the: Principal and Guest Investigator teams as one of the two focal plane instruments of the ORFEUS telescope. The spectrum of IID 93521 was obtained during this mission with a total integration time of 1740s. This spectrum shows numerous sharp interstellar absorption lines. We identified 198 lines of molecular hydrogen including at least 7 lines with a high velocity component. Also most of the 67 identified interstellar metal lilies are visible with a high velocity component. We present; plots of the complete ORFEUS II Echelle spectrum together with tables of all identified interstellar absorption lines including all 14 detectable H I lines. In addition several identified stellar lines, partially with narrow absorption components, anti stellar wind lines are given in a separate table.