! Proposal 6432, submission 1
! PI: Prof. D. Reimers
! Received Tue Feb 13 12:00:22 EST 1996
! From: hhagen@eso.org
!  +====================+
!  | PED OUTPUT PRODUCT |
!  +====================+
!
!  /diskc/visitor/hhagen/6432.prop
!  Generated by PREPROCESSOR, version 6.0e
!  Date: Tue Feb  6 19:28:04 MET 1996

Proposal_Information
              Title: Ly-alpha  forest clouds at intermediate redshifts z=0.8 to 1.4 in the new double QSO HS 1216+5032
  Proposal_Category: GO
Scientific_Category: QSO Absorption Lines
              Cycle: 6


Investigators

            PI_Name: Prof. D. Reimers
     PI_Institution: Hamburger Sternwarte


           CoI_Name: Dr. H.-J. Hagen
    CoI_Institution: Hamburger Sternwarte
            Contact: Y

           CoI_Name: Dr. J. Bergeron
    CoI_Institution: European Southern Observatory, Munich
            Contact: 

           CoI_Name: Dr. A. Smette
    CoI_Institution: University of Groningen
            Contact: 


Abstract:
We propose   to  observe spectroscopically  both components of
the new double QSO  HS 1216+5032  (z=1.43, d=9.1") with the
FOS in  high   resolution in   the range  2200 to
3270Angstrom with the aim to  measure transverse  dimensions
of Ly-alpha  forest clouds in the in this  respect unexplored
redshift  range  z=0.8 to 1.4 for which  this  QSO  pair  is
an  excellent  target  with  a  linear separation of  80 h_50^
-1 kpc. This  double QSO recently discovered by the Hamburg
survey is particularly well  suited for a Ly-alpha forest
study since  it samples  Ly-alpha clouds on a scale
slightly smaller than the expected characteristic
cloud    sizes. Identification  and  spectroscopy  of possible
parent  galaxies at z~1  from the  ground combined  with FOS
data  will yield 2-dimensional information  on Ly-alpha
clouds for the first time.


Questions


    Observing_Description:
We propose to take high-resolution spectra of both components
with the FOS G270H. With an estimated flux >= 10^-15
erg/cm^2/s/Angstrom at 2400Angstrom  for component A a
S/N>=20 is reached in 22 min for Lambda>2400Angstrom (1
orbit). , Component B is about a factor of 6 to 7 fainter
than A which requires about 140 min. exposure time or 4
orbits. Altogether 5 orbits are necessary to cover both
objects with a S/N>=20 for Lambda>2400Angstrom.

  Real_Time_Justification:
None.
Medium resolution spectroscopy with DeltaLambda~2Angstrom
covering the optical from 3300 to 6700Angstrom will be
conducted with the Calar Alto 3.5m telescope (accepted for
March 96). Deep imaging and spectroscopy of the QSO
environment will be applied for at the CFHT 4m telescope for
spring 96 (J. Bergeron).

Calibration_Justification:


      Additional_Comments:



Fixed_Targets

  Target_Number: 1
    Target_Name: HS-1216+5032A
Alternate_Names: 
    Description: GALAXY,QSO,
       Position: RA=12H 18M 41.12S +/- 0.05S,DEC=50D 15' 36.4" +/- 0.5",
                 PLATE-ID=00LK
        Equinox: J2000
        RV_or_Z: Z = 1.45
          RA_PM: 0.0
         Dec_PM: 0.0
          Epoch: 
Annual_Parallax: 0.0
           Flux: 
                B = 17.0
                F(3000)=10+/-3e-16
       Comments: 

  Target_Number: 2
    Target_Name: HS-1216+5032B
Alternate_Names: 
    Description: GALAXY,QSO,
       Position: RA=12H 18M 40.62S +/- 0.05S,DEC=50D 15' 44.2" +/- 0.5",
                 PLATE-ID=00LK
        Equinox: J2000
        RV_or_Z: Z = 1.45
          RA_PM: 0.0
         Dec_PM: 0.0
          Epoch: 
Annual_Parallax: 0.0
           Flux: 
                B = 19.0
                F(3000)=2+/-1e-16
       Comments: 


Solar_System_Targets


Generic_Targets


Scan_Data


Visits

      Visit_Number: 10
Visit_Requirements: 
  On_Hold_Comments: 
    Visit_Comments: 

     Exposure_Number: 11
         Target_Name: HS-1216+5032A
              Config: FOS/RD
              Opmode: ACQ/BINARY
            Aperture: 4.3
          Sp_Element: MIRROR
          Wavelength: 
 Optional_Parameters: 
Number_of_Iterations: 1
   Time_Per_Exposure: 12S
Special_Requirements: 
                ONBOARD ACQ FOR 12-19
            Comments: 

     Exposure_Number: 12
         Target_Name: HS-1216+5032A
              Config: FOS/RD
              Opmode: ACCUM
            Aperture: 4.3
          Sp_Element: G270H
          Wavelength: 
 Optional_Parameters: 
Number_of_Iterations: 1
   Time_Per_Exposure: 33M
Special_Requirements: 
            Comments: 

     Exposure_Number: 19
         Target_Name: HS-1216+5032B
              Config: FOS/RD
              Opmode: ACCUM
            Aperture: 4.3
          Sp_Element: G270H
          Wavelength: 
 Optional_Parameters: 
Number_of_Iterations: 1
   Time_Per_Exposure: 183M
Special_Requirements: 
            Comments: 

Data_Distribution         ! Defaults indicated; change if desired

         Medium: 8MM
Blocking_Factor: 10
        Ship_To: PI_Address
       Ship_Via: UPS
Recipient_Email: 

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