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    PR # 32099                                                                   
     Discovery of more than a handful Super Soft Sources (SSS) by ROSAT          
     verifies SSS as a new, important category of astronomical objects.          
     The origin  of SSS  is not completely clear;  SSS are believed to be        
     either neutron stars (or black holes)  shrouded by a large cocoon of        
     matter,  or white dwarfs with sustained  nuclear burning on their           
     surfaces.  We propose ASCA spectral observations of  CAL87 and              
     RXJ0925.7--4758,  which have hard enough energy spectra to be               
     observed with the ASCA SIS.  Our main purpose is to  (1) characterize       
     possible spectral deviation from a blackbody and determine continuum        
     spectral shape; (2)  investigate emission lines or absorption edge          
     features;  and (3) search for  a hard-tail.                                 
                                                                                 
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