SUMMARY OF PROPOSAL 41282
 YOSHITAKA ISHISAKI
U-TOKYO
TOKYO JAPAN 113
BUNKYO-KU
7-3-1 HONGO

  E-mail: ISHISAKI@MIRANDA.PHYS.S.U-TOKYO.AC.JP	Tel: 03-3812-2111 EXT.4173	Fax: 03-3812-6938
  Medium: 4GBDAT

Subject: COSMIC X-RAY BACKGROUND AND DEEP SURVEYS AND OTHER          
  Title: OBSERVATION OF MULTI Z SYSTEM QSOS IN BRACCESI FIELD (II)                       


Abstract:
 We propose follow up 2 pointing observations of multi z system QSOs in Braccesi
 Field with ASCA. There is a concentration of 35 QSOs/1.7deg**2 with z = 0.2 - 2.2
 and are full observations of Einstein IPC/HRI, optical and radio. The main purpose
 of these observations is to acquire energy spectra of faint "normal" (not OVVs nor
 BL Lacs) QSOs efficiently and to understand their evolution and contribution to the
 CXB in 2-10 keV range. Preliminary AO-3 analysis detects as many sources as expected
 and shows the uniqueness of this field.

 Co-Is:
   1  HIDETOSHI KUBO      	U-TOKYO                       JAPAN     
      (No Co-I contact data)
   2  MAKOTO TASHIRO      	U-TOKYO                       JAPAN     
   3  KAZUO MAKISHIMA     	U-TOKYO                       JAPAN     
   4  TADAYUKI TAKAHASHI  	ISAS                          JAPAN     
   5  YOSHIHIRO UEDA      	ISAS                          JAPAN     
   6  NORIKO YAMASAKI     	METRO-U                       JAPAN     


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
BRACCESI FIELD PT.3    1  195.5417   35.8000    50   N   N   P  0.05000   1 

REMARKS:           WE CHOOSE SIS 4CCD MODE WITH 0.6 KEV LEVEL DISCRIMINATOR
BRACCESI FIELD PT.4    1  194.9167   35.5000    50   N   N   P  0.05000   1 

REMARKS:           WE CHOOSE SIS 4CCD MODE WITH 0.6 KEV LEVEL DISCRIMINATOR