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   PR # 22108
    The SIS on ASCA is excellently suited for spectral imaging studies of
    SNRs because it provides a combination of good spectral resolution,  
    imaging with moderate spatial resolution, and high sensitivity. The  
    goals of the proposed experiment are to:(1)carry out imaging spectro-
    scopy of PKS 1209--52,(2)measure & identify as many atomic emission  
    lines as possible,(3)utilize the spectra to determine chemical abun- 
    dances & temperatures within a spatial resolution of ~5' w/in the    
    remnant,(4)examine the spectra for departures from the standard      
    ``equilibrium plasma'' model using 2 types of maximum entropy decon- 
    volution & also solving the coupled ionization equations directly, & 
    (5) perform narrow band photometry on the SNRimages searching for    
   regions of enhanced emission. 
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