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!  | PED OUTPUT PRODUCT |
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!
!  /data/charon4/smov/1055.prop
!  Generated by PREPROCESSOR, version 7.0
!  Date: Fri Dec 13 13:27:38 EST 1996

Proposal_Information
              Title: NICMOS Coronographic Observation
  Proposal_Category: GO
Scientific_Category: STELLAR EJECTA
              Cycle: 7


Investigators

            PI_Name: Joan Smith
     PI_Institution: University 1


           CoI_Name: John Brown
    CoI_Institution: University 2
            Contact: 


Abstract:
Use of the Coronograph.


Questions


    Observing_Description:
In this proposal, circumstellar material is being observed in NIC2 and
the F160W filter. The proposers are interested in material located at a
distance > 0".4 from the central object, so the observations is suited
for use of the coronograph (0".4 is the effective radius of the coronograph).
The first exposure in the series is the ACQUISITION of the target under the
coronographic spot. The second exposure is the actual observation of the
circumstellar material.
For the target acquisition under the coronographic spot, the NIC2-ACQ
aperture is selected. The central star is assumed to be very bright, and
a short exposure time 0f 0.7 seconds (TPG_time + 0.598 seconds = 0.1 + 0.598 
seconds) is selected to ensure that the acquisition exposure does 
not saturate. 
The observation of the circumstellar material is performed through the NIC2-CORON
aperture.  The MULTIACCUM readout mode with the sequence STEP256 and
NSAMP=12 (corresponding to 512 seconds of integration) is used to
obtain enough dynamical range and signal on the target. Three iterations
of this exposure are requested to reach fainter detection limits.

  Real_Time_Justification:


Calibration_Justification:


      Additional_Comments:



Fixed_Targets

  Target_Number: 1
    Target_Name: BRIGHTSTAR
Alternate_Names: Nice Star 1
    Description: STAR
       Position: RA=13H 50M 49.40S +/- 0.02S,DEC=42D 20' 58.0" +/- 0.7"
        Equinox: J2000
        RV_or_Z: 
          RA_PM: 0.0
         Dec_PM: 0.0
          Epoch: 
Annual_Parallax: 0.0
           Flux: 
                F(1.60)=0.00
       Comments: The value of the flux is in units of Jy, at 1.6 microns. The star is very bright


Solar_System_Targets


Generic_Targets


Scan_Data


Visits

      Visit_Number: 01
Visit_Requirements: 
  On_Hold_Comments: 
    Visit_Comments: First exposure: target acquisition under the cornograph;
second exposure: observation of the circumstellar material.

     Exposure_Number: 1
         Target_Name: BRIGHTSTAR
              Config: NIC2
              Opmode: ACQ
            Aperture: NIC2-ACQ
          Sp_Element: F160W
          Wavelength: 
 Optional_Parameters: 
Number_of_Iterations: 1
   Time_Per_Exposure: 0.7 S
Special_Requirements: 
                ONBOARD ACQ FOR 2
            Comments: 

     Exposure_Number: 2
         Target_Name: BRIGHTSTAR
              Config: NIC2
              Opmode: MULTIACCUM
            Aperture: NIC2-CORON
          Sp_Element: F160W
          Wavelength: 
 Optional_Parameters: SAMP-SEQ=STEP256,NSAMP=12
Number_of_Iterations: 3
   Time_Per_Exposure: DEF
Special_Requirements: 
            Comments: 

Data_Distribution         ! Defaults indicated; change if desired

         Medium: 8MM
        Ship_To: PI_Address
Recipient_Email: 

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