! Proposal 6472, submission 1 ! PI: Robert Mathieu ! Received Thu Feb 15 13:04:08 EST 1996 ! From: dctaylor@stsci.edu Proposal_Information ! Section 4 Title: Dynamical Masses for the Stars in the Pre -Main- Sequence Spectroscopic Binary 045251+3016 Proposal_Category: GO Scientific_Category: COOL STARS Cycle: 6 Investigators PI_name: Robert Mathieu PI_Institution: University of Wisconsin - Madison CoI_Name: Hans Zinnecker CoI_Institution: Astron. Institut Univ. Wuerzburg Contact: ! Y or N (designate at most one contact) CoI_Name: Mario Lattanzi CoI_Institution: Osservatorio Astronomico di Torino Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to use the Fine Guidance Sensors to measure dynamical masses for the two stars in the pre-main-sequence binary 045251+3016 =GSC2387 535. We have already completed an excellent single-lined spectroscopic orbit, which provides all of the essential orbital elements except inclination angle and mass ratio. We will use the FGS to derive both the apparent relative orbit of the binary (giving the inclination angle) and the absolute orbits of both components (giving the mass ratio). The predicted separation during Cycles 6-7 is >~ 20 mas, so this experiment is well suited to the FGS. This project was allocated 6 orbits in each of Cycles 5, 6 and 7. We have obtained the first Cycle 5 observation, which successfully resolved the binary. Continued observations in Cycles 6 and 7 are required to obtain the astrometric orbital elements necessary to derive the stellar masses. These observations will provide the first dynamical mass measurements for stars on their Hayashi tracks. Furthermore, the completed spectroscopic orbital solution makes this a unique opportunity for such measurements independent of any assumptions about the stars or their distance. These measurements are fundamental tests of pre-main-sequence stellar evolution theory. Questions ! Free format text (please update) Observing_Description: We propose to use both astrometric modes of operation of the astrometer FGS (FGS3): TRANS mode and POSitional mode. TRANS is used to map out a highly precise relative orbit of the binary, while POS mode is used in conjunction with TRANS to determine the absolute orbits of the two components. sectionInstrument Performance TRANS mode samples the interference fringe produced by the Koester's prism interferometer. There are two Koester's prism interferometers in each FGS to give sensitivity in two orthogonal directions, usually referred to as X and Y axes. Therefore, each FGS3 TRANS scan produces two fringes which can then be independently analyzed for signatures other than those characteristic of the appropriate FGS3 template (single) star. Deviations from the single-star fringes provide measures of the projected separations of binary stars. On-- sky separation and position angle are easily derived from these measurements and telescope attitude data (Bernacca et al. 1993, Lattanzi et al. 1994, and references therein). In April 1995 we obtained the first of our Cycle 5 observations. The TRANS observation consisted of 15 scans across the target. In our initial reduction we co-added 5 of those scans and cross-correlated the merged fringe with the UP69 single- star template. This produced an X-axis separation of 15 mas and a magnitude difference of DeltaV~eq1.88 mag; cross- correlating the Y-axis merged fringe gave 30 mas for the separation and DeltaV~eq1.83 mag. The errors on the single- axis separations are ~ 2 mas. These should approach the predicted 1 mas with the coaddition of all 15 TRANS scans. The excellent agreement between the independent determinations of DeltaV is also very encouraging. Based on this successful first observation and the orbit curves given in Figure 3, we can now securely say that FGS measurements in cycles 5 through 7 will provide a precise relative orbital curve over one-quarter of the orbit. (We note that the UP69 template has a B-V=0.5 compared to the B-V=1.3 of our target. Since the fringe FWHM is a function of effective wavelength, the values derived here must be considered preliminary. Final reductions will be made with a red template, the creation of which is part of the STScI Cycle 5 calibration program for the FGS.) POSitional mode is used for relative astrometry within the FGS field of view. High precision is achieved by sensing the linear portion (highest gain) of the interferometric fringe. Our initial reduction of the April 1995 POS mode observations yielded precisions better than 2.5 mas per single measurement of the relative position of one star. This error estimate is an upper limit to the actual precision of the measurements, since it includes intra-orbit drifts within FGS3; these will be removed using repeated measurements of several check stars observed throughout the orbit. A true assessment of the POS mode accuracy must await at least one other Cycle 5 observation; however, our preliminary results indicate that after proper reduction of the data <=sssim 2 mas precision should be achieved. sectionObserving Strategy In order to meaningfully distinguish between different sets of theoretical tracks we need to measure the stellar masses to relative uncertainties (1 Sigma) of 10\% (see Figure 1). Our observing strategy is designed to achieve this goal. Typically the best astrometric orbit solutions are obtained with well distributed observations over 180^degrees of the projected orbit. However, given the spectroscopic orbit we already have excellent measures of all but three of the relative orbital elements: the angular semimajor axis, the inclination angle, and the orientation of the line of nodes Omega. Hence we can obtain very good measures for these quantities with coverage of only a quarter of an orbit. In particular, the present uncertainty in a_prim sin(i) is 3\%; this will improve as radial-velocity measurements continue to be acquired. To determine sin(i) to a similar level of precision requires determining the inclination angle to a few degrees. If the other two free parameters were known a priori, examination of Figure 3 shows that this precision could be achieved with several 1-mas-precision measurements obtained in Cycles 6 and 7. On the other hand, observations during Cycle 5 place more constraint on semimajor axis than inclination (i.e. a node of the apparent orbit falls between points 3 and 4 in Figure 3). Assuming a maximum separation ~ 30 mas (Figure 3 and first observation) and a single-measurement precision of 1 mas, the allocated Cycle 5 observations will determine the angular relative semimajor axis to 1-2\%. In practice, all three unknown orbital elements will be solved for simultaneously, but this discussion shows the importance of observations in all three cycles to obtain a completely defined orbital solution. With such observations, we anticipate measurement errors of no more than a few percent in the relative orbital elements. In order to measure the stellar masses, the mass ratio must also be derived by determining the angular semimajor axes of both absolute orbits. Since the shape of these orbits will be very well determined from both the spectroscopic and relative orbits, this is essentially a matter of establishing size scales. An error analysis shows that to obtain an uncertainty on each stellar mass of 10\%, we must measure the absolute semimajor axes to better than 3\%. Assuming a measurement error of 1.5 mas on a single POS measurement and absolute semimajor axes of order 10 mas, this error budget requires 20 measurements. We argued above that we need observations in all of Cycles 5, 6 and 7 to determine both the relative semimajor axis and the inclination angle. Hence we have proposed 6 measurements per cycle. Fortunately, the star field toward 045251+3016 includes 5 GSC stars within ~eq 2' of the target, i.e. within the field of view always accessible to the FGS regardless of telescope orientation. Since our Cycle 5 time allocation we have done considerable ground-based work to establish the nature of these stars. Dr. K. Cudworth has obtained proper motions (Sigma = 3 mas/yr precision), which show that none of the stars have very large proper motions. In addition, Dr. M. Reuther has obtained intermediate-dispersion spectra and Lattanzi has obtained CCD photometry. Two of the stars are giants and thus assured to be very distant. Two others are F-G dwarfs at apparent distance moduli of ~ 10 mag. The fifth star is a relatively nearby dwarf. Thus four of the stars should define a stable astrometric reference frame. We propose to observe all four so as to precisely define the reference frame, reduce our astrometric error on the relative position of 045251+3016 to only the contribution from the 045251+3016 measurement, and protect against peculiar motions or other problems with any one star. Given four astrometric standards, our detailed observing plan for each visit is as follows. The orbit starts with a POS mode observation of the first standard star, which is also the primary check star to be observed three times throughout the orbit. Next is a POS mode observation of the second standard star, a secondary check star with two observations in the orbit. 15 TRANS mode scans of 045251+3016 follow, taking approximately 15 minutes. Note that in addition to measuring separations these TRANS scans provide 1) absolute positions of each component with respect to the reference stars and 2) accurate monitoring of any drifts within FGS3. POS mode measurements resume with a repeat of the first standard star, than with the third standard star. A repeat of the second standard star follows, and then the fourth, and last, standard star. The orbit is closed with the third observation of the first standard star. This orbit plan has already been run successfully through the Phase II software for feasibility. To conclude, we stress that it is essential to continue this program through Cycles 6 and 7 in order to i) determine the inclination angle of the system and ii) to achieve sufficiently precise measures of the absolute semimajor axes. Real_Time_Justification: None. Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: STAR-045602+302104 Alternate_Names: GSC2387-535, 045251+3016 Description: STAR, T Tauri Star Position: RA = 04H 56M 02.01S +/- 0.1S, DEC = +30D 21' 04.0" +/- 1" ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=02TR Equinox: 2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: 1982.8 Annual_Parallax: Flux: V=11.60 +/- 0.05, B-V=1.28 +/- 0.05 ! Include at least V and B-V Comments: Target_Number: 2 Target_Name: STAR-045600+302206 Alternate_Names: GSC2387-421 Description: STAR Position: RA = 04H 55M 59.86S +/- 0.1S, DEC = +30D 22' 05.7" +/- 1.0", ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", PLATE-ID=02TR Equinox: 2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=13.6 +/- 0.1 ! Include at least V and B-V Comments: Target_Number: 3 Target_Name: STAR-045605+302242 Alternate_Names: GSC2387-527 Description: STAR Position: RA = 04H 56M 04.88S +/- 0.1S, DEC = +30D 22' 41.6" +/- 1.0", ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", PLATE-ID=02TR Equinox: 2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=11.6 +/- 0.1 ! Include at least V and B-V Comments: Target_Number: 4 Target_Name: STAR-045603+302050 Alternate_Names: GSC2387-481 Description: STAR Position: RA = 04H 56M 02.51S +/- 0.1S, DEC = +30D 20' 50.5" +/- 1.0", ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", PLATE-ID=02TR Equinox: 2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=12.3 +/- 0.1 ! Include at least V and B-V Comments: Target_Number: 5 Target_Name: STAR-045606+302144 Alternate_Names: GSC2387-451 Description: STAR Position: RA = 04H 56M 05.92S +/- 0.1S, DEC = +30D 21' 44.0" +/- 1.0", ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", PLATE-ID=02TR Equinox: 2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=15.3 +/- 0.1 ! Include at least V and B-V Comments: Target_Number: 6 Target_Name: STAR-045623+301937 Alternate_Names: GSC2387-533 Description: STAR Position: RA = 04H 56M 23.33S +/- 0.1S, DEC = +30D 19' 36.8" +/- 1.0", ! Most common specification format is ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", PLATE-ID=02TR Equinox: 2000 RV_or_Z: RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V=14.0 +/- 0.1 ! Include at least V and B-V Comments: !******************************** VISIT 1 Cycle6 ******************** Visits ! Section 6 Visit_Number: 1 Visit_Requirements: BETWEEN 15-AUG-1996 AND 25-AUG-1996 ORIENT 0D TO 5D FROM NOMINAL Visit_Comments: Exposure_Number: 1 ! Section 6.5 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SEQuence 1-8 NON-INT SAME POS AS 3 Exposure_Number: 2 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 3 Target_Name: STAR-045602+302104 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: PUPIL Wavelength: Optional_Parameters: STEP-SIZE = 0.6, SCANS = 15 Number_of_Iterations: 1 Time_Per_Exposure: 937.5S Special_Requirements: POS TARG 0,-14 Exposure_Number: 4 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 5 Target_Name: STAR-045600+302206 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 150S Special_Requirements: SAME POSition AS 3 Exposure_Number: 6 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 7 Target_Name: STAR-045606+302144 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: FES-TIME=1.6 Number_of_Iterations: 1 Time_Per_Exposure: 180S Special_Requirements: SAME POSition AS 3 Exposure_Number: 8 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 !************************** END VISIT 1 ******************** ! !*************************** VISIT 2 CYCLE 6***************** Visits Visit_Number: 2 Visit_Requirements: BETWEEN 11-OCT-1996 AND 21-OCT-1996 ORIENT 0D TO 5D FROM NOMINAL Exposure_Number: 1 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SEQuence 1-8 NON-INT SAME POS AS 3 Exposure_Number: 2 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POS AS 3 Exposure_Number: 3 Target_Name: STAR-045602+302104 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: PUPIL Wavelength: Optional_Parameters: STEP-SIZE = 0.6, SCANS = 15 Number_of_Iterations: 1 Time_Per_Exposure: 937.5S Special_Requirements: POS TARG 0,-7 Exposure_Number: 4 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 5 Target_Name: STAR-045600+302206 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 150S Special_Requirements: SAME POSition AS 3 Exposure_Number: 6 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 7 Target_Name: STAR-045606+302144 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: FES-TIME=1.6 Number_of_Iterations: 1 Time_Per_Exposure: 180S Special_Requirements: SAME POSition AS 3 Exposure_Number: 8 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 !************************** END VISIT 2 ******************** ! !*************************** VISIT 3 CYCLE 6***************** Visits Visit_Number: 3 Visit_Requirements: BETWEEN 06-DEC-1996 AND 16-DEC-1996 ORIENT 0D TO 5D FROM NOMINAL Exposure_Number: 1 Target_Name: STAR-045602+302104 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: PUPIL Wavelength: Optional_Parameters: STEP-SIZE = 0.6, SCANS = 30 Number_of_Iterations: 1 Time_Per_Exposure: 1875S Special_Requirements: POS TARG 0,+10 !************************** END VISIT 3 ******************** ! !*************************** VISIT 4 CYCLE 6***************** Visits Visit_Number: 4 Visit_Requirements: BETWEEN 30-JAN-1997 AND 09-FEB-1997 ORIENT 0D TO 5D FROM NOMINAL Exposure_Number: 1 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SEQuence 1-8 NON-INT SAME POS AS 3 Exposure_Number: 2 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POS AS 3 Exposure_Number: 3 Target_Name: STAR-045602+302104 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: PUPIL Wavelength: Optional_Parameters: STEP-SIZE = 0.6, SCANS = 15 Number_of_Iterations: 1 Time_Per_Exposure: 937.5S Special_Requirements: POS TARG 0,+14 Exposure_Number: 4 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 5 Target_Name: STAR-045600+302206 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 150S Special_Requirements: SAME POSition AS 3 Exposure_Number: 6 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 7 Target_Name: STAR-045606+302144 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: FES-TIME=1.6 Number_of_Iterations: 1 Time_Per_Exposure: 180S Special_Requirements: SAME POSition AS 3 Exposure_Number: 8 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 !************************** END VISIT 4 ******************** ! !*************************** VISIT 5 CYCLE 6***************** Visits Visit_Number: 5 Visit_Requirements: BETWEEN 27-MAR-1997 AND 06-APR-1997 ORIENT 0D TO 5D FROM NOMINAL Exposure_Number: 1 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SEQuence 1-8 NON-INT SAME POS AS 3 Exposure_Number: 2 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POS AS 3 Exposure_Number: 3 Target_Name: STAR-045602+302104 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: PUPIL Wavelength: Optional_Parameters: STEP-SIZE = 0.6, SCANS = 15 Number_of_Iterations: 1 Time_Per_Exposure: 937.5S Special_Requirements: POS TARG 0,+12 Exposure_Number: 4 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 5 Target_Name: STAR-045600+302206 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 150S Special_Requirements: SAME POSition AS 3 Exposure_Number: 6 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 7 Target_Name: STAR-045606+302144 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: FES-TIME=1.6 Number_of_Iterations: 1 Time_Per_Exposure: 180S Special_Requirements: SAME POSition AS 3 Exposure_Number: 8 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 !************************** END VISIT 5 ******************** ! !*************************** VISIT 6 CYCLE 6***************** Visits Visit_Number: 6 Visit_Requirements: BETWEEN 14-SEP-1997 AND 21-SEP-1997 Exposure_Number: 1 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SEQuence 1-8 NON-INT SAME POS AS 3 Exposure_Number: 2 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POS AS 3 Exposure_Number: 3 Target_Name: STAR-045602+302104 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: PUPIL Wavelength: Optional_Parameters: STEP-SIZE = 0.6, SCANS = 15 Number_of_Iterations: 1 Time_Per_Exposure: 937.5S Special_Requirements: POS TARG 0,0 Exposure_Number: 4 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 5 Target_Name: STAR-045600+302206 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 150S Special_Requirements: SAME POSition AS 3 Exposure_Number: 6 Target_Name: STAR-045603+302050 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 Exposure_Number: 7 Target_Name: STAR-045606+302144 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: FES-TIME=1.6 Number_of_Iterations: 1 Time_Per_Exposure: 180S Special_Requirements: SAME POSition AS 3 Exposure_Number: 8 Target_Name: STAR-045605+302242 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 60S Special_Requirements: SAME POSition AS 3 !************************** END VISIT 6 ******************** ! 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 ! PI Address from Phase I is: ! ! 475 N. Charter Street ! Madison ! 53706--1582 ! ! Ship_Via: UPS ! UPS (2-day) or OVERNIGHT ! Overnight shipping done at PI expense !Recipient_Email: ! Needed if Ship_To: is not PI_Address ! ! Let us know what you think of this template and software! ! Please send a list of your likes and dislikes to your Program Coordinator