*************************************************************************
   71086
   Super Luminous Point Sources (SLPS) which is considered to be a single
   point source but have an X-ray luminosity of 10^{39} to 10^{40} erg/sec
   are found at off-center positions of about twenty nearby spiral
   galaxies. Some SLPSs were found near the center of the galaxy but not
   in the nucleus. These sources still remain as one of the most
   mysterious classes of objects, even after extensive studies with
   Einstein, ROSAT, and ASCA. In particular ASCA observations revealed the
   X-ray spectra and temporal variations of many of this class of objects.
   For the further study of these class of objects, we propose to observe
   one nearby spiral galaxies, NGC 4559 and, which contain two SLPS,one is
   near the center and another is offset about 2' from the center.
 *************************************************************************