CCD SPECTROPHOTOMETRY OF CVS .1. 4600-9000-ANGSTROM LOW-RESOLUTION ATLAS FOR 31 FAINT SYSTEMS

A low resolution (similar to 18 Angstrom) 4600-9000 Angstrom spectroph otometric atlas is presented for 31 objects in the Downes & Shara (199 3) catalogue of Cataclysmic Variables. The star were selected among th ose listed without published quiescence spectra. All the spectra we pr esent pertain to photometric quiescence phases. V - R, R-I colors, con tinuum fluxes at selected wavelengths, equivalent widths of emission l ines and description of absorption lines and bands are given for all t he programme stars. Of the 31 systems surveyed, 19 have spectra confir ming their classification as CVs, 8 show continua without emission lin es, one is a planetary nebula, another one could be a symbiotic star a nd one turned out to be a starburst galaxy.