! Proposal 6411, submission 1
! PI: Dr. Malcolm Fridlund
! Received Tue Jan 23 07:15:03 EST 1996
! From: mfridlun@astro.estec.esa.nl
! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template
! $Id: 6411,v 6.1 1996/09/11 17:32:08 pepsa Exp $
! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template
! $Id: 6411,v 6.1 1996/09/11 17:32:08 pepsa Exp $
!
!   Refer to the HST Phase II Proposal Instructions to fill this out
!
!   Anything after a "!" is ignored, and may be deleted
!
!   All keywords with multiple entries are comma delimited except the
!   Visit_Requirements and Special_Requirements keywords which can be
!   delimited with carriage returns or semi-colons, but not commas
!
! For help call your Program Coordinator: Ready
!             Phone: 410-338-4546    , E-mail: ready@stsci.edu
!
! This partially completed template was generated from a Phase I proposal.
! Name of Phase I Proposal: archive-0041.fridlund.prop
! Date generated: Fri Dec 22 17:33:43 EST 1995
!

Proposal_Information                           ! Section 4
              Title:  Velocity field and small scale structure
                      in the L1551 IRS5 jet
  Proposal_Category:  GO
Scientific_Category:  BINARIES AND STAR FORMATION
             Cycle:    6

Investigators
     PI_name:         Dr. Malcolm Fridlund
     PI_Institution:  Astrophysics Division, European Space Agency

          CoI_Name:   Dr. Rene Liseau
   CoI_Institution:   Stockholm Observatory
           Contact:             ! Y or N (designate at most one contact)

          CoI_Name:   Erik Gullbring
   CoI_Institution:   Stockholm Observatory
           Contact:             ! Y or N (designate at most one contact)


Abstract:                                ! Free format text (please update)
    This is a continuation proposal from cycle 5. Our aim is to
    image the optical jet emanating from the young stellar object
    L1551 IRS5 over a period of three cycles. Using two narrow
    band filters sensitive to high- and low-excitation shocks
    respectively, we aim to study the
    time evolution of small scale structures within this object.
    Ground based observations have already detected the time scale
    for evolution of this object. HST is going to provide the
    level of detail necessary for a direct comparison with
    (existing) hydrodynamical models. Our data will resolve the
    smallest features observed (optically) so far in an
    astrophysical jet, and also detect their time evolution. This
    proposal received already time in cycle 5 with 4 orbits.

Questions                       ! Free format text (please update)

     Observing_Description:
         We will obtain 2 deep images in each of HAlpha and SII in cycle 
         6. One orbit will be dedicated to
         each of the filters. Although relative astrometry of the
         movements of the knots in the jet is the main purpose of this
         proposal, the orientation of the HST sould be such that the
         few reference stars available within the field of view fall
         onto the wide field part of the camera thus allowing also
         absolute astrometry.

   Real_Time_Justification:

         Ground based spectroscopic observations were carried out at 
         the Nordic Optical telescope, La Palma in mid September 1995.


Calibration_Justification:              ! Move appropriate text from Real_Time_Justification

      Additional_Comments:


Fixed_Targets                           ! Section 5.1
  Target_Number:1
    Target_Name:L1551-IRS5
Alternate_Names:HH154
    Description:ISM,HERBIG-HARO OBJECT,BIPOLAR OUTFLOW, JET
       Position:RA=4H 28M 40.23S +/- 0.02S,
                DEC=+18D 1' 42.23" +/- 0.7"
                        ! Most common specification format is
                                        ! RA=0H 0M 0.00S +/- 0S,
                                        ! DEC=0D 0' 0.0" +/- 0",
                                        ! PLATE-ID=0000
        Equinox:1950.0
        RV_or_Z:
          RA_PM:                        ! Units are seconds of time per year
         Dec_PM:                        ! Units are seconds of arc per year
          Epoch:1982.11
Annual_Parallax:
           Flux:F-LINE(6563)=3.3E-14                        
                W-LINE(6563)=7+/-3
                F-LINE(6716)=1.0E-14
                W-LINE(6716)=7+/-3
                F-LINE(6731)=1.9E-14
                W-LINE(6731)=7+/-3
! Include at least V and B-V
       Comments:Total fluxes for 10 arcsec by 2 arcsec part of jet

! This is a template for a single visit containing a single exposure
! Repeat exposure and visit blocks as needed

Visits                                  ! Section 6
      Visit_Number:1
Visit_Requirements:                     ! Section 7.1

! Uncomment or copy visit level special requirements needed
! Most of these requirements (including ORIENT) will limit scheduling

         PCS MODE Fine
        ! GUIDing TOLerance <angle>
        ! DROP TO GYRO IF NECESSARY [NO REACQuisition]
         ORIENTation 40D TO 90D
        ! ORIENTation <angle1> TO <angle2> FROM <visit>
        ! ORIENTation <angle1> TO <angle2> FROM NOMINAL
        ! SAME ORIENTation AS <visit>
        ! CVZ
        ! PARallel
        ! SCHEDulability <percentage>
        ! AFTER <visit> [BY <time1> [TO <time2>]]
         AFTER 1-OCT-96
        ! BEFORE <date>
        ! BETWEEN <date1> AND <date2>
        ! GROUP <visit-list> WITHIN <time>
        ! PERIOD <time> AND ZERO-PHASE <date>
        ! SEQ <visit-list> WITHIN <time>
        ! ON HOLD [FOR <visit-list>]

  On_Hold_Comments:
    Visit_Comments:The visit should be carried out more than 7 months 
after the cycle 5 observation, in order to show the proper motions in 
the jet. 

     Exposure_Number:1                   ! Section 6.5
         Target_Name:L1551-IRS5
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F673N
          Wavelength:
 Optional_Parameters:
Number_of_Iterations:1
   Time_Per_Exposure:2600S
Special_Requirements:                   ! Section 7.2

! Uncomment or copy exposure level special requirements needed

        ! INTeractive ACQuisition FOR <exp-list>
        ! ONBOARD ACQuisition FOR <exp-list>
        ! SAVE OFFSET <id>
        ! USE OFFSET <id>
        ! POSition TARGet <x-value>,<y-value>
        !SAME POSition AS 1
        ! DO FOR TARGets <targ-list>    ! FGS only
        ! PARallel WITH <exp>
        ! GROUP-FGS <exp-list> WITHIN <time>
        ! SPATIAL SCAN <#> [<exp-list> | SINGLE-EXP ]
        ! RT ANALYSIS [FOR <exp-list>]
        ! REQuires UPLINK
        ! REQuires EPHEMeris CORRection <id>
        ! END ORBIT
        ! EXPAND
        ! LOW-SKY
        ! MAXimum DURation [<time> | <%>]
        ! MINimum DURation [<time> | <%>]
        ! NO SPLIT
        ! PHASE <number1[0,1]> TO <number2[0,1]>
        ! SEQuence <exp-list> NON-INTerruptible
        ! SHADOW

            Comments:
     Exposure_Number:2                   ! Section 6.5
         Target_Name:L1551-IRS5
              Config:WFPC2
              Opmode:IMAGE
            Aperture:PC1
          Sp_Element:F656N
          Wavelength:
 Optional_Parameters:
Number_of_Iterations:1
   Time_Per_Exposure:2600S
Special_Requirements:                   ! Section 7.2

          SAME POSition AS 1

Data_Distribution                       ! Defaults indicated; change if desired

         Medium:        8MM             ! 8MM or 6250BPI or 1600BPI
Blocking_Factor:        10              ! 10 or 1
                                        ! Only astronomers with very old 9-
                                        ! track tape drives should consider
                                        ! a blocking factor of 1

        Ship_To:        PI_Address      ! STSCI or PI_Address or <free-text>
                                        ! PI Address from Phase I is:
                                        !
                                                 !  ESTEC
                                                 !  P.O. Box 299
                                                 !  Noordwijk
                                                 !  NL-2200AG
                                        !
                                        !
       Ship_Via:        UPS             ! UPS (2-day) or OVERNIGHT
                                        ! Overnight shipping done at PI expense

Recipient_Email:                        ! Needed if Ship_To: is not PI_Address
                                        ! <free-text>

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