! Proposal 6911, submission 2
! PI: SMITH, ED
! Received Wed Sep 25 12:38:12 EDT 1996
! From: edsmith@stsci.edu
!  +====================+
!  | PED OUTPUT PRODUCT |
!  +====================+
!
!  /data/slrtbrtfst2/rps2/6165.prop
!  Generated by PREPROCESSOR, version 6.4f
!  Date: Wed Sep 25 10:48:34 EDT 1996

Proposal_Information
              Title: FOS CYCLE 6: DISCRIMINATOR TEST
  Proposal_Category: CAL/FOS
Scientific_Category: 
              Cycle: 6


Investigators

            PI_Name: SMITH, ED
     PI_Institution: ST SCI


           CoI_Name: CHRISTENSEN, JENNIFER
    CoI_Institution: ST SCI
            Contact: 

           CoI_Name: Koratkar, Anuradha
    CoI_Institution: ST SCI
            Contact: 

           CoI_Name: Keyes, Charles
    CoI_Institution: STSCI
            Contact: 

           CoI_Name: Hayes, Jeffery
    CoI_Institution: STSCI
            Contact: 

           CoI_Name: STORRS, ALEX
    CoI_Institution: STSCI
            Contact: 


Abstract:
The optimal discriminator settings were
determined in Cycle 4.
Because both the noise and gain are known to be
temperature sensitive, it is likely that some
fraction of the channels will experience some
change in their optimal discriminator settings
on orbit.  The discriminator/noise test should
be run once in cycle 5 to verify the stability
of those settings.  The FOS high voltage will
be brought to approximately one-half the
nominal operating voltage (12750 KV), with the
REFDAC=250 and the trim focus current at 0.  A
60s wait will allow the high voltage to
stabilize.  The command block YTDN will be run,
with the INTFLAT as the source.  Total time is
xxx hours NON-PRIME.


Questions


    Observing_Description:
This is a copy of Cycle 5, 6165.
The FOS high voltage will be brought to approximately
one-half the nominal operating voltage (12750 KV),
with the REFDAC=250 and the trim focus current
at 0.  A 60S wait will allow the high voltage
to stabilize.  The command block YTDN will be run,
with the INTFLAT as the source, for the following
parameters:
FOS/RD
DAC values 100-255
1 unit per step
10s exposure time
26M total exposure time
13M total overhead
FOS/BL
DAC values 100-255
1 unit per step
60s exposure time
91M total exposure time
13M total overhead
The exposure times listed above are based on
running command blocks YSHDLV (8:37) and YSHVON (1:41).
It is advisable that this test be run intermittently
throughout the mission.
Disable overlight protection.
All observations are internal.

  Real_Time_Justification:


Calibration_Justification:


      Additional_Comments:



Fixed_Targets


Solar_System_Targets


Generic_Targets


Scan_Data


Visits

      Visit_Number: 01
Visit_Requirements: 
  On_Hold_Comments: 
    Visit_Comments: 

     Exposure_Number: 10
         Target_Name: INTFLAT
              Config: FOS/RD
              Opmode: IMAGE
            Aperture: 4.3
          Sp_Element: MIRROR
          Wavelength: 
 Optional_Parameters: Y-SPACE=0,Y-SIZE=1,COMB=NO,SUB-STEP=1,DHV-DAC=12.74,DISCSTART=101,DREF-DAC=49.12,DHV-DELAY=60
Number_of_Iterations: 1
   Time_Per_Exposure: 26 M
Special_Requirements: 
            Comments: TRIM FOCUS CURRENT=0.
TURN OFF OVERLIGHT;
PERFORM DISCRIMINATOR
OBSERVATIONS AT ONLY
ODD VALUED THRESHOLDS.
START AT DISC 101.

      Visit_Number: 02
Visit_Requirements: 
                AFTER 01 BY 12 H TO 36 H
  On_Hold_Comments: 
    Visit_Comments: 

     Exposure_Number: 10
         Target_Name: INTFLAT
              Config: FOS/RD
              Opmode: IMAGE
            Aperture: 4.3
          Sp_Element: MIRROR
          Wavelength: 
 Optional_Parameters: Y-SPACE=0,Y-SIZE=1,COMB=NO,SUB-STEP=1,DHV-DAC=12.74,DISCSTART=100,DREF-DAC=49.12,DHV-DELAY=60
Number_of_Iterations: 1
   Time_Per_Exposure: 26 M
Special_Requirements: 
            Comments: TRIM FOCUS CURRENT=0.
TURN OFF OVERLIGHT;
PERFORM DISCRIMINATOR
OBSERVATIONS AT ONLY
EVEN VALUED THRESHOLDS.
START AT DISC 100.

      Visit_Number: 03
Visit_Requirements: 
  On_Hold_Comments: 
    Visit_Comments: 

     Exposure_Number: 10
         Target_Name: INTFLAT
              Config: FOS/BL
              Opmode: IMAGE
            Aperture: 4.3
          Sp_Element: MIRROR
          Wavelength: 
 Optional_Parameters: Y-SPACE=0,Y-SIZE=1,COMB=NO,SUB-STEP=1,DHV-DAC=12.74,DISCSTART=101,DREF-DAC=49.12,DHV-DELAY=60
Number_of_Iterations: 1
   Time_Per_Exposure: 45.5 M
Special_Requirements: 
            Comments: TRIM FOCUS CURRENT=0.
TURN OFF OVERLIGHT;
PERFORM DISCRIMINATOR
OBSERVATIONS AT ONLY
ODD VALUED THRESHOLDS.

      Visit_Number: 04
Visit_Requirements: 
                AFTER 03 BY 12 H TO 36 H
  On_Hold_Comments: 
    Visit_Comments: 

     Exposure_Number: 10
         Target_Name: INTFLAT
              Config: FOS/BL
              Opmode: IMAGE
            Aperture: 4.3
          Sp_Element: MIRROR
          Wavelength: 
 Optional_Parameters: Y-SPACE=0,Y-SIZE=1,COMB=NO,SUB-STEP=1,DHV-DAC=12.74,DISCSTART=100,DREF-DAC=49.1,DHV-DELAY=60
Number_of_Iterations: 1
   Time_Per_Exposure: 45.5 M
Special_Requirements: 
            Comments: TRIM FOCUS CURRENT=0.
TURN OFF OVERLIGHT;
PERFORM DISCRIMINATOR
OBSERVATIONS AT ONLY
EVEN VALUED THRESHOLDS.

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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