THE SOLAR DISK SPECTRUM BETWEEN 660 AND 1175 ANGSTROM (FIRST-ORDER) OBTAINED BY SUMER ON SOHO

SUMER - Solar Ultraviolet Measurements of Emitted Radiation - onboard of SOHO - Solar and Heliospheric Observatory - obtained its first spec trum on January 25, 1996 near the north polar limb. The range from 660 Angstrom to 1175 Angstrom which has never before been observed with s uch a good spectral resolution contains a wealth of spectroscopic deta ils. Identification of about 400 lines in this spectral range is given . We list the wavelengths of identified transitions and provide their absolute peak intensities. General spectral features of the most abund ant elements H, He, C, N, O, Ne, Mg, Si, S, Ar, and Fe are described. In this spectral range many density- and temperature-sensitive line pa irs are found. It is shown in examples how they can be used as diagnos tic tools.