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   PR # 42156
   We propose to observe four bright (1~mCrab) radio-quiet quasars at
   z~1.5 with ASCA. This redshift: (1) allows Fe-K features to be
   studied in quasars at a S/N comparable with those in Seyfert 1
   galaxies; (2) allows objects of high luminosity (~10 L(3C273)) to be
   compared with low luminosity AGN; (3) lies near the peak in quasar
   evolution, at a look back time of ~50 -- 70 per cent of a Hubble
   time, and may reveal changes in continuum form with evolutionary
   epoch. The ASCA spectra will also complement approved XTE
   observations.
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