*************************************************************************
   62001
   Recent observations of comet Hyakutake and others have provided
   evidence of high energy emissions from comets. These observations
   showed positional detail, but did not have adaquate spectral resolution
   to discern the nature of physical processes responsible for X-ray
   emission. While some processes could be ruled out by X-ray broad band
   photometric behavior, thermal bremsstrahlung, ion charge transfer, or
   solar wind interactions could not. We propose to observe 2 comets
   during their perihelion approach using SIS to obtain data to determine
   the process responsible for emission. We will monitor our primary
   candidate over 9 days for transient emission. By observing 2 comets
   successively we hope to determine if xray emission dependends on each
   comet's characteristics or on solar activety.
 *************************************************************************