******************************************************
   PR # 22038
    The boundary layer in the accretion disk of cataclysmic variables has
    long been theorized but seldom directly observed.  We propose to     
    observe the deep-eclipsing, X-ray bright, non-magnetic CV EC1931-5915
    to search for the source of the X-rays.  This search will consist of 
    a detailed examination of the crude, time-resolved spectra we will   
    obtain as well as an analysis of the phase-resolved emission line    
    light curves. The light curves will track the behavior of those lines
    making the largest contribution to the emission measure at a particu-
    lar energy. The combination of the spectra and the light curves will 
    constrain the location of the emitting region, test whether all of   
    the emission arises from the same location, and provide clues to  the
   temperature regime the emittin
 ******************************************************