AN ULTRAVIOLET SPECTRAL ATLAS OF THE SUN BETWEEN 1190-1730 ANGSTROM

An ultraviolet spectral atlas of different solar regions in the wavelength region 1190-1730 angstrom is presented. The data were obtained with the High Resolution Telescope and Spectrograph (HRTS) during a rocket flight in 1978. The spectral resolution of the instrument was 0.05 angstrom while a spatial resolution of approximately 1.''8 was achieved. The atlas is a supplement to the previous ultraviolet atlas of a sunspot and an active region based on the same rocket data (Brekke et al. 199 1 ). The atlas contains spectra of three different quiet regions including pointings at disk center and the extreme limb. Data from an active region close to the solar limb and a prominence have also been included together with an atlas of a so-called explosive event. The selected areas are averaged over several arcsec, ranging from 3.''5 to 220'' (see Table 2). The absolute intensities are determined with an accuracy of +/-30% except for the strongest emission lines that are synthesized from spectra with different exposure times. The atlas is available in a machine-readable form together with an IDL program to interactively measure line widths, total intensities, and solar wavelengths.