HIGH-RESOLUTION PROFILES OF THE MG-II-H AND MG-II-K LINES

Spectra of the Mg II h and k lines have been recorded by the balloon-borne telescope spectrograph RASOLBA. The observations have been made at the center of the solar disk and across the limb with an angular resolution of 1 arcsec along the 30x0.3 arcsec(2) slit and a spectral resolution of 15 pm within the 20 nm wavelength range. We present here the method used to reduce the data and profiles of these lines at several locations on the solar disk with uncertainties in the intensity of 16% at sun center. Integral and spectral intensity, line of sight velocities and limb darkening curve derived from these spectra are discussed.