
File names are in the form:
observation date followed by serial number, followed by file extension .fits, as in YYMMDD.NNN.fits prior to the year 2000 and YYYYMMDD.NNN.fits after. 
Right click on link to download desired file.
The following are échelle Ritter spectra of the Venus covering the 7780-9110 Angstroms range divided among five apertures.