! Proposal 5897, submission 2
! PI: Michael Bolte
! Received Thu Mar 16 13:16:43 EST 1995
! From: bolte@lick.ucolick.org
Proposal_Information                           ! Section 4
              Title:  Ages for the Oldest Star Clusters in the
                      Large Magellanic Cloud
  Proposal_Category:  GO
Scientific_Category:  Stellar Populations
             Cycle:    5

Investigators
     PI_name:         Michael Bolte
     PI_Institution:  UCO/Lick Observatory

          CoI_Name:   Howard E. Bond
   CoI_Institution:   Space Telescope Science Institute
           Contact:             ! Y or N (designate at most one contact)

          CoI_Name:   James E. Hesser
   CoI_Institution:   Dominion Astrophysical Observatory
           Contact:             ! Y or N (designate at most one contact)

          CoI_Name:   Claudia M. de Oliveira
   CoI_Institution:   European Southern Observatory
           Contact:             ! Y or N (designate at most one contact)

          CoI_Name:   Harvey B. Richer
   CoI_Institution:   University of British Columbia
           Contact:             ! Y or N (designate at most one contact)

          CoI_Name:   Peter B. Stetson
   CoI_Institution:   Dominion Astrophysical Observatory
           Contact:             ! Y or N (designate at most one contact)

          CoI_Name:   Don A. VandenBerg
   CoI_Institution:   University of Victoria
           Contact:             ! Y or N (designate at most one contact)

Abstract:                     
    We propose WFPC2 observations that will provide color-
    magnitude diagrams reaching to below the main-sequence
    turnoffs in 7 of the oldest star clusters in the Large
    Magellanic Cloud (LMC)Null. These data will allow a  direct
    comparison of the ages of these clusters with those of Milky
    Way globular clusters. The primary goals are: a) to determine
    if the initial bursts of star formation occurred at the same
    time in both galaxies, and b) to determine if all of the
    clusters in the LMC with  Fe/H<-1.7 have the same ages
    (indicating that the first epoch of star formation in the LMC
    occurred during a free-fall collapse), or if they have a range
    in ages (indicating a non-monolithic collapse or possibly a
    series of mergers that formed the LMC)Null. Our Cycle 4
    observations of globular clusters in the outer halo of the
    Milky Way demonstrate that the proposed LMC observations are
    straightforward for HST, even though impossible from the
    ground. For the first time, we be able to make a direct
    comparison of the ages of the ancestral components of two
    galaxies of widely differing mass and Hubble type.


Questions                      

     Observing_Description:
         The observing program will be a straightforward series of
         WFPC2 exposures, in the standard HST V (F555W) and I (F814W)
         filters, on seven globular clusters in the Large Magellanic
         Cloud. The observing strategy is based on the precision
         actually achieved in our Cycle 4 observations of distant
         Galactic globular clusters, and the LMC exposure times are
         directly scaled from the Cycle 4 program. We have found that
         it is sufficient to observe only a single WFPC2 field, with
         the PC chip located at the center of the cluster, in order to
         measure enough stars to attain our program goals. Note also
         that we will continue to use small pointing offsets (of order
         1.67 WF pixels) between individual exposures to allow us to
         overcome undersampling problems in the three WF chips. This
         proposal makes extremely efficient use of HST because 6 of
         the 7 targets lie in the continuous viewing zone. Our
         observing plan will produce data matching the excellent
         quality of the Cycle 4 observations of Pal 4 and NGC 2419.
         We thus arrive at the following exposure sequence
         (with overhead factored in, and filling out the integer
         number of orbits with extra exposure time) for each of the
         six targets lying in the CVZNull. A 96-minute visibility
         period per orbit and no guide-star re-acquisitions are
         assumed.  Orbit 1. Initial guide-star acquisition, followed
         by two 260-sec exposures in F555W, two 260-sec exposures in
         F814W, three 1000-sec exposures in F555W (the third extends into
         to Orbit 2) and four 1000 second exposures in F814W. 
         For the one remaining cluster, which
         is not in the CVZ, we have 59 minutes of visibility per
         orbit. This one target therefore requires 3 orbits, as
         follows:  Orbit 1. Initial guide-star aquisition, followed by
         one 260-sec exposure in F555W, two 260-sec exposures in F814W
         and one 1100-sec exposure in F814W.  Orbit 2. Two 800-sec and
         one 700-sec exposures in F814W, Orbit 3: two 800-sec exposures 
         and one 700-sec exposure in F55W.
         The entire program thus requires 15 orbits.

   Real_Time_Justification:
         Six of our seven targets are in the continuous-viewing zone.
         This program therefore takes very significant advantage of
         the increased HST efficiency that comes from using the CVZ.

         We have an ongoing battery of ground-based programs in
         support of this project: 1. As we did for our Cycle 4 outer-
         halo Galactic globular clusters, we will observe the target
         clusters from the ground during the same observing runs when
         we are establishing fiducial V, V-I CMD studies of near-halo
         clusters. This will allow a self-consistent calibration of
         the entire set of clusters now being observed as part of our
         comprehensive halo- and LMC-ages program. 2. A large number
         of clusters with R_G between 5 and 50 kpc have been, or will
         be, observed in V and I from the ground to establish the
         basis for our age survey of the Galactic and LMC halos. 3.
         The stellar-evolution and stellar-atmosphere models on which
         we depend are constantly being improved. In particular an
         effort is underway to produce and test predicted stellar
         colors and magnitudes in the HST V and I bandpasses.

Calibration_Justification:            
Additional_Comments:

! GASP coordinates measured by K. Schaefer and H.E. Bond 06-mar-95

Fixed_Targets        

  Target_Number:    1
    Target_Name:    NGC1466
Alternate_Names:    C0344-718
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=3H 44M 33.0S +/- 1",
                    DEC=-71D 40' 14" +/- 1",
                    PLATE-ID=061E
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

  Target_Number:    2
    Target_Name:    NGC1786
Alternate_Names:    
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=4H 59M 07.4S +/- 1",
                    DEC=-67D 44' 45" +/- 1",
                    PLATE-ID=05ZW
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

  Target_Number:    3
    Target_Name:    NGC1841
Alternate_Names:    C0444-840
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=4H 45M 23.4S +/- 1",
                    DEC=-83D 59' 58" +/- 1",
                    PLATE-ID=04BP
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

  Target_Number:    4
    Target_Name:    NGC2210
Alternate_Names:              
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=6H 11M 31.4S +/- 1",
                    DEC=-69D 07' 22" +/- 1",
                    PLATE-ID=014D
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

  Target_Number:    5
    Target_Name:    NGC2257
Alternate_Names:    ESO87-24
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=6H 30M 12.6S +/- 1",
                    DEC=-64D 19' 39" +/- 1",
                    PLATE-ID=00MS
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

  Target_Number:    6
    Target_Name:    HODGE11
Alternate_Names:             
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=6H 14M 22.2S +/- 1",
                    DEC=-69D 50' 48" +/- 1",
                    PLATE-ID=014D
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

  Target_Number:    7
    Target_Name:    RETICULUM
Alternate_Names:    C0435-590
    Description:    STELLAR CLUSTER, GLOBULAR CLUSTER
       Position:    RA=4H 36M 03.0S +/- 1",
                    DEC=-58D 51' 27" +/- 1",
                    PLATE-ID=02IC
        Equinox:    J2000
           Flux:    V = 27.5,
                    B-V = 0.6   
       Comments:    THE TARGET FLUX LEVEL REFERS TO THE
                    FAINT MAIN-SEQUENCE STARS IN THE CLUSTER.

Visits                 
      Visit_Number:   01
Visit_Requirements:   CVZ   
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00

     Exposure_Number:  13
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  15
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  SAME POS AS 11       

     Exposure_Number:  16
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.076

     Exposure_Number:  17
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.152

     Exposure_Number:  18
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.038, 0.228 
                       
     Exposure_Number:  19
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.038, 0.228
                       
     Exposure_Number:  20
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.152
                       
     Exposure_Number:  21
         Target_Name:  NGC1466
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.076
                 
      Visit_Number:   02
Visit_Requirements:   CVZ   
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00

     Exposure_Number:  13
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  15
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  SAME POS AS 11       

     Exposure_Number:  16
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.076

     Exposure_Number:  17
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.152

     Exposure_Number:  18
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.038, 0.228 
                       
     Exposure_Number:  19
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.038, 0.228
                       
     Exposure_Number:  20
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.152
                       
     Exposure_Number:  21
         Target_Name:  NGC1786
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.076
                 
      Visit_Number:   03
Visit_Requirements:   CVZ   
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00

     Exposure_Number:  13
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  15
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  SAME POS AS 11       

     Exposure_Number:  16
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.076

     Exposure_Number:  17
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.152

     Exposure_Number:  18
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.038, 0.228 
                       
     Exposure_Number:  19
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.038, 0.228
                       
     Exposure_Number:  20
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.152
                       
     Exposure_Number:  21
         Target_Name:  HODGE11
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.076
                 
      Visit_Number:   04
Visit_Requirements:   CVZ   
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00

     Exposure_Number:  13
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  15
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  SAME POS AS 11       

     Exposure_Number:  16
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.076

     Exposure_Number:  17
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.152

     Exposure_Number:  18
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.038, 0.228 
                       
     Exposure_Number:  19
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.038, 0.228
                       
     Exposure_Number:  20
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.152
                       
     Exposure_Number:  21
         Target_Name:  NGC2210
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  PC1-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.076
                 
      Visit_Number:   05
Visit_Requirements:   CVZ   
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00

     Exposure_Number:  13
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  15
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  SAME POS AS 11       

     Exposure_Number:  16
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.076

     Exposure_Number:  17
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.152

     Exposure_Number:  18
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.038, 0.228 
                       
     Exposure_Number:  19
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.038, 0.228
                       
     Exposure_Number:  20
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.152
                       
     Exposure_Number:  21
         Target_Name:  NGC2257
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.076
Visits                 
      Visit_Number:   06
Visit_Requirements:   CVZ   
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00

     Exposure_Number:  13
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  15
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  SAME POS AS 11       

     Exposure_Number:  16
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.076

     Exposure_Number:  17
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.076, 0.152

     Exposure_Number:  18
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG 0.038, 0.228 
                       
     Exposure_Number:  19
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.038, 0.228
                       
     Exposure_Number:  20
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.152
                       
     Exposure_Number:  21
         Target_Name:  RETICULUM
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1000S
Special_Requirements:  POS TARG -0.076, 0.076
                       
      Visit_Number:   07
Visit_Requirements:         
    Visit_Comments:   

     Exposure_Number:  11
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  260S
Special_Requirements:  POS TARG 0.00, 0.00
 
     Exposure_Number:  13  
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  2
   Time_Per_Exposure:  260S
Special_Requirements:  SAME POS AS 11       

 
     Exposure_Number:  15
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  1100S
Special_Requirements:  SAME POS AS 11

     Exposure_Number:  16
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  800S
Special_Requirements:  POS TARG 0.076, 0.076  
                             
     Exposure_Number:  17
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  700S
Special_Requirements:  POS TARG 0.076, 0.152 

     Exposure_Number:  18
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F814W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  800S
Special_Requirements:  POS TARG 0.038, 0.228

     Exposure_Number:  19
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  800S
Special_Requirements:  POS TARG -0.038, 0.228
                  
     Exposure_Number:  20
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  800S
Special_Requirements:  POS TARG -0.076, 0.152

     Exposure_Number:  21
         Target_Name:  NGC1841  
              Config:  WFPC2
              Opmode:  IMAGE
            Aperture:  WF3-FIX
          Sp_Element:  F555W
          Wavelength:
 Optional_Parameters:  CR-SPLIT=NO
Number_of_Iterations:  1
   Time_Per_Exposure:  700S
Special_Requirements:  POS TARG -0.076, 0.076 
                       
Data_Distribution                   

         Medium:        8MM          
Blocking_Factor:        10            
                                       
        Ship_To:        PI_Address      ! M. Bolte       
                                        ! UCO/Lick Observatory              
                                        ! University of California
                                        ! Santa Cruz, CA 95064