6495( 15) - 02/21/97 11:23 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6495 Version: 15 Check-in Date: 21-Feb-1997 11:08:39 1.Proposal Title: The Mass of the Bright Giant HD 173764 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle COOL STARS GO 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: SID PARSONS SPACE TELESCOPE SCIENCE INSTITUTE CoI: Otto Franz Lowell Observatory N ------------------------------------------------------------------------------------ 6. Abstract TRANS mode interferometry of HD 173764 at an estimated distance of 150 pc is expected to resolve the component separation of this G4 II + B9 spectroscopic binary system. With its 832 day period, the binary will be observable over a large range of orbital motion during the next two years. The FGS measurements, analyzed with respect to the spectroscopic orbit, will yield the system's inclination, distance, luminosities, and sum of the component masses. Concurrent POS mode astrometry will provide the mass ratio. Since G-type bright giants and supergiants are relatively rare, the primary's mass and luminosity are especially important for comparison with theory for rapid post main sequence evolution. ------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 2] Observations Description ------------------------ We propose to make TRANS and POS mode observations at intervals of roughly 60 days for a total of 3 measurement sets before the target enters solar avoidance in November, plus 2 measurement sets in Spring 1997 if warranted by analysis of the 1996 observations. At the start of Cycle 6, the system is expected to be at a separation of about 34 mas, then progress toward smaller separations. The first 3 observations will provide a rough approximation to the inclination and major axis. If these early results are promising, we would submit a continuation proposal for Cycle 7 in order to secure measurements on the opposite side of the orbit for very definitive results. If we do resolve HD 173764 in TRANS mode over a substantial portion of the orbit AND observe it relative to a set of local reference stars, then we will, of course, get the mass ratio astrometrically. If we cannot resolve (or not resolve at all dates of observation) the components directly, then POS mode will still give us the reflex motion (i.e. astrometric perturbation) of the photocenter and thus the orbital inclination. With the inferred system parameters, the reflex motion of the primary around the center of mass is about 8 mas, significantly above the precision of 2 mas per observation. A combination of POS and TRANS modes, involving 3 - 4 reference stars, will fit into one orbit. The field of HD 173764 in the Guide Star Catalog finds several well distributed stars surrounding HD 173764 and available as local reference stars throughout the target visibility without the need for substantial off-nominal-roll requirements. TRANS-mode data will be reduced and analyzed with the use of algorithms and software developed, tested, and extensively applied at Lowell Observatory by Franz and Wasserman under GTO proposals of the Astrometry Science Team. TRANS scan data are analyzed under the assumption that the transfer function (TF) of a resolvable binary is a linear superposition of two single-star functions. If F(X) is the TF of a single star on the FGS X-axis, a double star will then yield a TF of the form D(X) = A*F(X + Z) + B*F(X + Z + S) + C, where A and B are the fractional intensities and S is the effective separation of the binary components along the FGS X-axis. Z and C are a zeropoint offset and a bias, respectively. An equivalent expression exists in Y. We determine the values of these parameters by least-squares solutions. Appropriate single-star transfer functions of high signal-to-noise ratio serve as templates. The resulting S-values in X and Y yield the binary separation and, by transformation from the FGS X-Y frame to equatorial coordinates, the position angle of the pair. The fractional intensities A and B yield directly the magnitude difference between the binary components. Tests on four visual binaries with very accurately known orbits have shown that FGS in TRANS mode yields both astrometric precision and accuracy of 1 mas from one observation. Derived magnitude differences are accurate to a few percent. Current estimation of the visual magnitude difference in this binary, from fitting UV and optical fluxes, is 3.3 +/- 0.3 mag. Assuming success, we will propose at a future time far-UV spectroscopy which should enable independent and probably more precise determination of the mass ratio via photospheric lines from the hot component. Mass ratio determination has been attempted from IUE mid-UV spectra, but the signature of photospheric lines could not clearly be found among G-star photospheric and wind features at limited S/N. There was a slight indication for a mass ratio of order 3.3 between cool primary and hot secondary, not consistent with present isochrone fitting which gives estimated masses of around 5 and 2.5 solar masses for cool and hot components. This study will provide important information on the accuracy of indirect methods for determining stellar parameters. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 3] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: Otto Franz*Lowell Observatory*1400 W. Mars Hill Rd*Flagstaff, AZ 86001 Ship Via: Email: ogf@lowell.edu ------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 4] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD173764 STAR, G III-I, RA=18H 47M 10.40S +/- .1S, DEC=- J2000 V = 4.22+/-0.03 Composite Spectral Type 04D 44' 51.6" +/- 1" B-V = 1.10+/-0.03 E(B-V) = 0.20+/-0.04 Comments: Star 426 on OGF list 2 HD173764-2- CALIBRATION, RA=281.76945D +/- .0002D, DEC=- J2000 V = 13.01+/-0.2 REF ASTROMETRIC 4.72450D +/- .0002D Comments: Star 180 on OGF list 3 HD173764-3- CALIBRATION, RA=281.86546D +/- .0002D, DEC=- J2000 V = 12.22+/-0.2 REF ASTROMETRIC 4.74021D +/- .0002D Comments: Star 222 on OGF list 4 HD173764-4- CALIBRATION, RA=281.81180D +/- .0002D, DEC=- J2000 V = 13.12+/-0.2 REF ASTROMETRIC 4.71856D +/- .0002D Comments: Star 233 on OGF list 5 HD173764-5- CALIBRATION, RA=281.74026D +/- .0002D, DEC=- J2000 V = 12.71+/-0.2 REF ASTROMETRIC 4.73401D +/- .0002D Comments: Star 333 on OGF list 6 HD173764-6- CALIBRATION, RA=281.83711D +/- .0002D, DEC=- J2000 V = 12.48+/-0.2 REF ASTROMETRIC 4.75820D +/- .0002D Comments: Star 348 on OGF list 7 HD173764-7- CALIBRATION, RA=281.75754D +/- .0002D, DEC=- J2000 V = 11.58+/-0.2 REF ASTROMETRIC 4.74200D +/- .0002D Comments: Star 367 on OGF list 6495( 15) - 02/21/97 11:23 - [ 5] Visit: 01 Visit Requirements: PCS MODE Fine; ORIENTation 83D TO 113D; BETWEEN 1-AUG-96 AND 15-AUG-96 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 HD173764 FGS POS 3 F5ND 1 12 S POS TARG 0.0, 0.0; MAX DUR 12S SEQ 10-150 NON-INT Comments: OBSERVATION MAY BE TRUNCATED TO SATISFY MONITORING SPACING REQUIREMENTS ------------------------------------------------------------------------------------------------------------------------------------ 20 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 30 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 40 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 50 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 55 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 60 HD173764 FGS POS 3 F5ND 1 12 S MAX DUR 12S ------------------------------------------------------------------------------------------------------------------------------------ 70 HD173764 FGS TRANS 3 F5ND SCANS=20,STEP-SIZE=1 1 500 S ------------------------------------------------------------------------------------------------------------------------------------ 80 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 90 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 100 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 105 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 110 HD173764 FGS POS 3 F5ND 1 12 S ------------------------------------------------------------------------------------------------------------------------------------ 120 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 125 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 130 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 140 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 150 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 7] Visit: 02 Visit Requirements: PCS MODE Fine; ORIENTation 81D TO 81D; BETWEEN 01-SEP-96 AND 17-SEP-96 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 HD173764 FGS POS 3 F5ND 1 12 S POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-180 NON-INT Comments: OBSERVATION MAY BE TRUNCATED TO SATISFY MONITORING SPACING REQUIREMENTS ------------------------------------------------------------------------------------------------------------------------------------ 20 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 30 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 40 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 50 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 60 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 65 HD173764-4- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 70 HD173764 FGS POS 3 F5ND 1 12 S MAX DUR 12S ------------------------------------------------------------------------------------------------------------------------------------ 80 HD173764 FGS TRANS 3 F5ND SCANS=16,STEP-SIZE=1 1 400 S ------------------------------------------------------------------------------------------------------------------------------------ 90 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 100 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 110 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 120 HD173764 FGS POS 3 F5ND 1 12 S ------------------------------------------------------------------------------------------------------------------------------------ 130 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 140 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 150 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 160 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 170 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 180 HD173764-4- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 9] Visit: 03 Visit Requirements: PCS MODE Fine; ORIENTation 81D TO 83D; BETWEEN 10-OCT-96 AND 12-NOV-96 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 HD173764 FGS POS 3 F5ND 1 12 S POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-180 NON-INT Comments: OBSERVATION MAY BE TRUNCATED TO SATISFY MONITORING SPACING REQUIREMENTS ------------------------------------------------------------------------------------------------------------------------------------ 20 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 30 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 40 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 50 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 60 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 65 HD173764-4- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 70 HD173764 FGS POS 3 F5ND 1 12 S MAX DUR 12S ------------------------------------------------------------------------------------------------------------------------------------ 80 HD173764 FGS TRANS 3 F5ND SCANS=17,STEP-SIZE=1 1 425 S ------------------------------------------------------------------------------------------------------------------------------------ 90 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 100 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 110 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 120 HD173764 FGS POS 3 F5ND 1 12 S ------------------------------------------------------------------------------------------------------------------------------------ 130 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 140 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 150 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 160 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 170 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 180 HD173764-4- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 11] Visit: 04 Visit Requirements: PCS MODE Fine; ORIENTation 265D TO 278D; BETWEEN 01-MAR-97 AND 05-APR-97 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 HD173764 FGS POS 3 F5ND 1 12 S POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-170 NON-INT Comments: OBSERVATION MAY BE TRUNCATED TO SATISFY MONITORING SPACING REQUIREMENTS ------------------------------------------------------------------------------------------------------------------------------------ 20 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 30 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 40 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 50 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 60 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 70 HD173764 FGS POS 3 F5ND 1 12 S MAX DUR 12S ------------------------------------------------------------------------------------------------------------------------------------ 80 HD173764 FGS TRANS 3 F5ND SCANS=22,STEP-SIZE=1 1 550 S ------------------------------------------------------------------------------------------------------------------------------------ 90 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 100 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 110 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 120 HD173764 FGS POS 3 F5ND 1 12 S ------------------------------------------------------------------------------------------------------------------------------------ 130 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 140 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 150 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 160 HD173764-5- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 12] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 170 HD173764-2- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 13] Visit: 05 Visit Requirements: PCS MODE Fine; ORIENTation 242D TO 265D; BETWEEN 20-APR-97 AND 01-JUN-97 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 HD173764 FGS POS 3 F5ND 1 12 S POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-150 NON-INT Comments: OBSERVATION MAY BE TRUNCATED TO SATISFY MONITORING SPACING REQUIREMENTS ------------------------------------------------------------------------------------------------------------------------------------ 15 HD173764-4- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 20 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 30 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 40 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 50 HD173764 FGS POS 3 F5ND 1 12 S MAX DUR 12S ------------------------------------------------------------------------------------------------------------------------------------ 60 HD173764 FGS TRANS 3 F5ND SCANS=21,STEP-SIZE=1 1 525 S ------------------------------------------------------------------------------------------------------------------------------------ 70 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 80 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 90 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 100 HD173764 FGS POS 3 F5ND 1 12 S MAX DUR 12S ------------------------------------------------------------------------------------------------------------------------------------ 110 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 120 HD173764-3- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 125 HD173764-4- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 130 HD173764-7- FGS POS 3 F583W 1 24 S MAX DUR 24S REF ------------------------------------------------------------------------------------------------------------------------------------ 140 HD173764-6- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 14] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 150 HD173764-4- FGS POS 3 F583W 1 30 S MAX DUR 30S REF ------------------------------------------------------------------------------------------------------------------------------------ 6495( 15) - 02/21/97 11:23 - [ 15] Summary Form for Proposal 6495 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes POS TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SCANS=20 STEP-SIZE=1 SCANS=16 SCANS=17 SCANS=22 SCANS=21 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PCS MODE Fine; ORIENTation 83D TO 113D; BETWEEN 1-AUG-96 AND 15-AUG-96 POS TARG 0.0, 0.0; MAX DUR 12S SEQ 10-150 NON-INT MAX DUR 30S MAX DUR 24S MAX DUR 12S PCS MODE Fine; ORIENTation 81D TO 81D; BETWEEN 01-SEP-96 AND 17-SEP-96 POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-180 NON-INT PCS MODE Fine; ORIENTation 81D TO 83D; BETWEEN 10-OCT-96 AND 12-NOV-96 PCS MODE Fine; ORIENTation 265D TO 278D; BETWEEN 01-MAR-97 AND 05-APR-97 POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-170 NON-INT PCS MODE Fine; ORIENTation 242D TO 265D; BETWEEN 20-APR-97 AND 01-JUN-97 POS TARG 0.0, 0.0;MAX DUR 12S SEQ 10-150 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F5ND F583W ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD173764 HD173764-2-REF HD173764-5-REF HD173764-7-REF HD173764-6-REF HD173764-3-REF HD173764-4-REF ------------------------------------------------------------------------------------------------------------------------------------