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   PR #    20
   Cygnus Loop is a typical shell-type SNR with a radius about 1.5D.
   There are several bright parts, particularly in the shell region. We
   will see the NEbright knot as well as the center region. The expected
   counting rate is about16 counts/sec/SIS and 4 counts/sec/SIS,
   respectively. The specrum shows several emission lines up to 3 keV.
   There is no iron-K line emission reported.Most of the emissions come
   from various lines (O, Ne, Fe, N, S, Si and more).We can study the
   evolutional state of the plasma with these lines. The sizeof the Loop
   is big enough, therefore, we can study the spatial structure in detail
   too. The following observation will be planned with this result.
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