7497( 18) - 02/01/99 12:06 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 7497 Version: 18 Check-in Date: 01-Feb-1999 12:05:19 1.Proposal Title: WFPC2 Observations of Astrophysically Important Visual Binaries ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 7 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Howard Bond Space Telescope Science Institute CoI: Ronald Gilliland Space Telescope Science Institute N CoI: Terry Girard Yale University N CoI: Karen G. Schaefer Space Telescope Science Institute N ------------------------------------------------------------------------------------ 5. Abstract We recently used WFPC2 images of Procyon A and B to measure an extremely accurate separation of the bright F star and its much fainter white-dwarf companion. Combined with ground-based astrometry of the bright star, our observation significantly revises downward the derived masses, and brings Procyon A into excellent agreement with theoretical evolutionary tracks for the first time. We now propose to begin a modest but long-term program of WFPC2 measurements of astrophysically important visual binaries, working in a regime of large magnitude differences and/or faint stars where ground-based speckle interferometry cannot compete. We have selected three systems: Procyon (P=40 yr), for which continued monitoring will even further refine the very accurate masses; Mu Cas (P=21 yr), a famous metal-deficient G dwarf for which accurate masses will lead to the star's helium content with cosmological implications; and G 107-70, a close double white dwarf (P=18 yr) that promises to add two accurate masses to the tiny handful of white-dwarf masses that are directly known from dynamical measurements. ------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 2] Observations Description ------------------------ We will obtain direct images with WFPC2 of three astrophysically important visual binaries. Each binary will be observed once or twice per CALENDAR YEAR for the next three years (and we would expect to continue to observe them through the lifetime of HST), in order to obtain very accurate masses for the stellar components. The WFPC2 filters will be chosen appropriately for each target. The following table summarizes the program: Star Delta Nominal P (yr) Observations mag separation (") per calendar year Procyon 10 4.9 41 1 Mu Cas 6 0.4 22 2 G 107-70 0.3 0.6 18 2 Real Time Justification ----------------------- The dates of the observations are time-critical, since we need them to be spaced roughly equally in time, at yearly intervals for Procyon and biannually for the other two targets. For G 107-70, we have an opportunity to improve the ground-based parallax, since the target will be near two slightly fainter reference stars in the PC chip for the next decade or so. Hence we must schedule the two annual observations at the times of maximum parallax factor in October and April. Mu Cas is presently passing through periastron, so it is crucially important to obtain the observations at the dates specified. All three targets will be observed with ORIENTs that place the companions well away from the diffraction spikes and bleeding columns of the bright primary stars. Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Paper Products: Media: ELECTRONIC Blocking Factor: 10 Ship To: STSCI Ship Via: Email: bond@stsci.edu ------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PROCYON STAR, F3-F9, DA RA = 07H 39M 18.36S +/- 1", DEC J2000 V = 0.36 = +05D 13' 35.6" +/- 1" B-V = 0.42 Comments: coords are for center of gravity of binary Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1995.18 -0.04755 -1.0229 0.283 2 MU-CAS STAR, G V-IV RA = 01H 08M 16.378S +/- 0.5", J2000 V = 5.15 DEC = +54D 55' 13.41" +/- 0.5" B-V = 0.70 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) J2000 0.3972 -1.596 0.134 3 G107-70 STAR, DC RA = 07H 30M 46.44S +/- 0.5", J2000 V = 15.25 DEC = +48D 10' 25.5" +/- 0.5" B-V = 0.99 Comments: We have worked out the position of the target for epoch 1997.75, and therefore give the proper motion as zero. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1997.75 0. 0. 0.090 7497( 18) - 02/01/99 12:06 - [ 4] Visit: 01 Visit Priority: Visit Requirements: BETWEEN 01-OCT-97 AND 30-DEC-97 ORIENT 272D TO 292D SCHED 40% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes or bleeding columns of primary star. It will result in an observation date near 1997 Nov 1. If absolutely necessary, ORIENT could be decreased by about 180 degrees to 99D +/- 10D and observation could be done earlier in 1997 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.14 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 20 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 30 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.14 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 40 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 50 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15,CR-SPLIT=0.5, 1 0.28 S POS TARG -0.421, -0.375 CR-TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 60 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15,CR-SPLIT=0.5, 1 200 S POS TARG -0.421, -0.375 CR-TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 70 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.14 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 80 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 90 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.14 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 100 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG -0.568, -0.273 Comments: If this last line in reality causes a 2nd orbit, then it could be dropped to maintain efficiency. ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 5] Visit: 02 Visit Priority: Visit Requirements: ORIENTation 259D TO 299D BETWEEN 01-JUN-97 AND 01-SEP-97 SCHED 60% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG 0., 0. Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 3 MU-CAS WFPC2 IMAGE PC1 F467M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG 0., 0. Comments: This gets the Stromgren b color ------------------------------------------------------------------------------------------------------------------------------------ 4 MU-CAS WFPC2 IMAGE PC1 F547M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG 0., 0. Comments: This gets the Stromgren y color ------------------------------------------------------------------------------------------------------------------------------------ 5 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 6 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG -0.659, -0.659 Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 7 MU-CAS WFPC2 IMAGE PC1 F467M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.659, -0.659 Comments: This gets the Stromgren b color ------------------------------------------------------------------------------------------------------------------------------------ 8 MU-CAS WFPC2 IMAGE PC1 F547M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.659, -0.659 Comments: This gets the Stromgren y color ------------------------------------------------------------------------------------------------------------------------------------ 9 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 10 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG -0.318, -0.477 Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 11 MU-CAS WFPC2 IMAGE PC1 F467M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.318, -0.477 Comments: This gets the Stromgren b color ------------------------------------------------------------------------------------------------------------------------------------ 12 MU-CAS WFPC2 IMAGE PC1 F547M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.318, -0.477 Comments: This gets the Stromgren y color ------------------------------------------------------------------------------------------------------------------------------------ 13 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 14 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG -0.568, -0.273 Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 6] Visit: 03 Visit Priority: Visit Requirements: ORIENTation 74D TO 104D BETWEEN 01-JAN-98 AND 01-MAR-98 SCHED 50% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG 0., 0. Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 3 MU-CAS WFPC2 IMAGE PC1 F467M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG 0., 0. Comments: This gets the Stromgren b color ------------------------------------------------------------------------------------------------------------------------------------ 4 MU-CAS WFPC2 IMAGE PC1 F547M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG 0., 0. Comments: This gets the Stromgren y color ------------------------------------------------------------------------------------------------------------------------------------ 5 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 6 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG -0.659, -0.659 Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 7 MU-CAS WFPC2 IMAGE PC1 F467M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.659, -0.659 Comments: This gets the Stromgren b color ------------------------------------------------------------------------------------------------------------------------------------ 8 MU-CAS WFPC2 IMAGE PC1 F547M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.659, -0.659 Comments: This gets the Stromgren y color ------------------------------------------------------------------------------------------------------------------------------------ 9 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 10 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG -0.318, -0.477 Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 11 MU-CAS WFPC2 IMAGE PC1 F467M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.318, -0.477 Comments: This gets the Stromgren b color ------------------------------------------------------------------------------------------------------------------------------------ 12 MU-CAS WFPC2 IMAGE PC1 F547M ATD-GAIN=15,CR-SPLIT=NO 1 0.11 S POS TARG -0.318, -0.477 Comments: This gets the Stromgren y color ------------------------------------------------------------------------------------------------------------------------------------ 13 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.5 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 14 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 1 0.3 S POS TARG -0.568, -0.273 Comments: Repeat exp no. 1 with shorter exp time for insurance ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 7] Visit: 04 Visit Priority: Visit Requirements: ORIENTation 244D TO 274D BETWEEN 01-JUL-98 AND 01-SEP-98 SCHED 60% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 3 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 4 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 5 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.421, -0.375 ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 8] Visit: 05 Visit Priority: Visit Requirements: ORIENTation 281D TO 317D BETWEEN 26-SEP-97 AND 24-OCT-97 SCHED 70% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Date requirement is to maximize the parallax factor. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 3 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 4 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 5 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 6 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 7 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 8 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 20 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 9 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 2 20 S POS TARG -0.421, -0.375 Comments: This exposure done twice to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 10 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 2 20 S POS TARG -0.421, -0.375 Comments: This exposure done twice to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 9] Visit: 06 Visit Priority: Visit Requirements: ORIENTation 107D TO 143D BETWEEN 22-MAR-98 AND 19-APR-98 SCHED 40% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Date requirement is to maximize the parallax factor. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 3 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 4 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 5 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 6 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 7 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 8 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 9 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 3 40 S POS TARG -0.421, -0.375 Comments: This exposure done 3 times to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 10 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 2 40 S POS TARG -0.421, -0.375 Comments: This exposure done twice to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 10] Visit: 07 Visit Priority: Visit Requirements: ORIENTation 290D TO 326D BETWEEN 26-SEP-98 AND 24-OCT-98 SCHED 50% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Date requirement is to maximize the parallax factor. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 3 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 4 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 5 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 6 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 7 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 8 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 9 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 3 40 S POS TARG -0.421, -0.375 Comments: This exposure done 3 times to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 10 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 2 40 S POS TARG -0.421, -0.375 Comments: This exposure done twice to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 11] Visit: 08 Visit Priority: Visit Requirements: BETWEEN 01-OCT-98 AND 30-DEC-98 ORIENT 277D TO 297D On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes or bleeding columns from the very bright primary star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.12 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 20 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 30 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.12 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 40 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 50 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15,CR-SPLIT=0.5, 1 0.24 S POS TARG -0.421, -0.375 CR-TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 60 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15,CR-SPLIT=0.5, 1 200 S POS TARG -0.421, -0.375 CR-TOLERANCE=0.0 ------------------------------------------------------------------------------------------------------------------------------------ 70 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.12 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 80 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 90 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 0.12 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 100 PROCYON WFPC2 IMAGE PC1 F218W ATD-GAIN=15 1 100 S POS TARG -0.568, -0.273 Comments: If this last line in reality causes a 2nd orbit, then it could be dropped to maintain efficiency. ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 12] Visit: 09 Visit Priority: Visit Requirements: ORIENTation 41D TO 71D BETWEEN 01-FEB-99 AND 10-MAR-99 SCHED 50% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 3 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 4 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 5 MU-CAS WFPC2 IMAGE PC1 F953N ATD-GAIN=15,CR-SPLIT=NO 3 1.0 S POS TARG -0.421, -0.375 ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 13] Visit: 10 Visit Priority: Visit Requirements: ORIENTation 115D TO 151D BETWEEN 1-APR-99 AND 19-APR-99 SCHED 40% On Hold Comments: Additional Comments: ORIENT requirement is done so that companion star will not lie near diffraction spikes of primary star. Date requirement is to maximize the parallax factor. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 2 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG 0., 0. ------------------------------------------------------------------------------------------------------------------------------------ 3 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 4 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.659, -0.659 ------------------------------------------------------------------------------------------------------------------------------------ 5 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 6 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.318, -0.477 ------------------------------------------------------------------------------------------------------------------------------------ 7 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 8 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 1 40 S POS TARG -0.568, -0.273 ------------------------------------------------------------------------------------------------------------------------------------ 9 G107-70 WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15,CR-SPLIT=NO 3 40 S POS TARG -0.421, -0.375 Comments: This exposure done 3 times to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 10 G107-70 WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15,CR-SPLIT=NO 2 40 S POS TARG -0.421, -0.375 Comments: This exposure done twice to use up rest of orbit ------------------------------------------------------------------------------------------------------------------------------------ 7497( 18) - 02/01/99 12:06 - [ 14] Summary Form for Proposal 7497 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PC1 PC1-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ATD-GAIN=15 CR-TOLERANCE=0.0 CR-SPLIT=0.5 CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-OCT-97 AND 30-DEC-97 ORIENT 272D TO 292D SCHED 40% POS TARG 0., 0. POS TARG -0.659, -0.659 POS TARG -0.421, -0.375 POS TARG -0.318, -0.477 POS TARG -0.568, -0.273 ORIENTation 259D TO 299D BETWEEN 01-JUN-97 AND 01-SEP-97 SCHED 60% ORIENTation 74D TO 104D BETWEEN 01-JAN-98 AND 01-MAR-98 SCHED 50% ORIENTation 244D TO 274D BETWEEN 01-JUL-98 AND 01-SEP-98 SCHED 60% ORIENTation 281D TO 317D BETWEEN 26-SEP-97 AND 24-OCT-97 SCHED 70% ORIENTation 107D TO 143D BETWEEN 22-MAR-98 AND 19-APR-98 SCHED 40% ORIENTation 290D TO 326D BETWEEN 26-SEP-98 AND 24-OCT-98 SCHED 50% BETWEEN 01-OCT-98 AND 30-DEC-98 ORIENT 277D TO 297D ORIENTation 41D TO 71D BETWEEN 01-FEB-99 AND 10-MAR-99 SCHED 50% ORIENTation 115D TO 151D BETWEEN 1-APR-99 AND 19-APR-99 SCHED 40% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F218W F953N F467M F547M F555W F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names PROCYON MU-CAS G107-70 ------------------------------------------------------------------------------------------------------------------------------------