6114( 18) - 08/29/95 10:56 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6114 Version: 18 Check-in Date: ********** 1.Proposal Title: White Dwarf Distance and Precision Age for the Globular Cluster 47 Tuc ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle Stellar Populations GO 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Alvio Renzini Dipartimento di Astronomia CoI: Francesco Ferraro Osservatorio di Bologna N CoI: Angela Bragaglia Osservatorio di Bologna N CoI: Kenneth J. Mighell Columbia University N CoI: Sergio Ortolani Osservatorio di Padova N CoI: Michael Shara Space Telescope Science Institute N CoI: Eugenio Carretta Dip. Astronomia Padova N CoI: Gianni Marconi Osservatorio di Roma N CoI: Jay B. Holberg Lunar and Planetary Laboratory N CoI: Ralph Bohlin Space Telescope Science Institute N CoI: R. Michael Rich Columbia University N CoI: Roberto Gilmozzi ESO N CoI: Ronald Gilliland Space Telescope Science Institute N ------------------------------------------------------------------------------------ 6. Abstract This is the natural continuation of our Cycle 4 program aimed at using the White Dwarf cooling sequence for the calibration of the globular cluster distance scale, the determination of accurate distances being a prerequisite for the estimate of reliable cluster ages. Cycle 4 observations have just begun; they will deal with the metal poor cluster NGC 6752. Now the goal is to use the same method to obtain the distance modulus of the metal rich cluster 47 Tuc, with an accuracy better than ~ 0.1 mag, which allows a 10\ Besides allowing a more stringent determination of the age of the galactic globular cluster system, the comparison between the age of the two clusters will test whether there really exists a measurable age difference between the metal poor and the metal rich clusters, as has been inferred from some horizontal branch luminosity-metallicity calibration. Besides deep WFPC2 UBVI imaging of 47 Tuc, we also need UBVI photometry of a few local calibration WDs with trig parallax, so as to improve upon the White Dwarf Fiducial Cooling Sequences (FCS) that we have started to construct in Cycle 4. The observed cooling sequences for the cluster (separately for DA and non-DA WDs) will then be fit to the corresponding FCSs to determine the cluster distance modulus. Moreover, directly fitting to each other the WD cooling sequences of the two clusters will allow a very accurate relative distance (hence age ------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 2] Observations Description ------------------------ For this program, we are observing 47 Tuc in the U, B, V, I filters only. The formulae used for the exposure time calculation are those specified in the WFPC2 Handbook, May 1994, for the central pixel of each camera, with the following assumptions: 1) Updated instrument efficiencies, 2) AB values for sky and stellar spectra from Table 6.1, taking into account that WDs have different spectral types at V=25 and 26, 3) =23 mag/squarearcsec, 4) Dark=0.005, 5) Read out noise = 5.2 electrons rms per reading, 6) Pij from interpolation of Table 6.4 (p. 58). The exposure times on the target cluster have been calculated in order to reach magnitude V=26 in the three filters F439W, F555W, F814W with S/N ~ 10 for the WDs in 47 Tuc both in the WFC and in the PC. The total exposure time ON the target cluster is 39,000 sec (cf. Table 2). beginverbatim TABLE 2 - exposure times and S/N reached for the cluster WDs Filter Texp (sec) V S/N WF S/N PC B F439W 20000 26 10 7 V F555W 7000 26 13 10 I F814W 12000 26 12 8 endverbatim We are aware that the high star density within the cluster may have the effect of rising the background over the assumed Sky=23 mag/sq. arcsec. However, even assuming a one mag brighter Sky S/N ratios do not change appreciably for the adopted exposure times. We also require observations of further field WDs with accurate trig parallax; in this case, we do require also U filter images, since the new WDs will be used in conjunction with the Cycle 4 ones to build up a more accurately defined Fiducial Cooling Sequence, to be applied to NGC 6752 as well. In the case of the local calibration WD exposures we have used the same photometric data described above to calculate exposure times, in order to have approximately S/N=100 for all the four filters. Each WD will have to be observed once per filter and chip, for a total of 16 exposures on the same WD. Because the WD must be placed accurately on each chip, it will be necessary to acquire guide stars for the calibration observations. The total exposure time (shutter open) for the calibration WDs is 247 sec. Real Time Justification ----------------------- The target cluster 47 Tuc could be done during the CVZ period. However, such period is very short, only ~ 60 hours/yr, and so we prefer to have a more flexible scheduling. We have already secured a suitable number of CCD frames of 47 Tuc, taken at ESO NTT, that will allow us to select the best field for HST observations, so as to reduce to a minimum the number of contaminating red giants sampled by WFPC2, especially in the PC chip. These data also conclusively prove that the WD sequence can only be observed with the necessary accuracy using HST. Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 3] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: __User-Comments__ The proposal has the following pr, ------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 4] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 47TUC-WDF STELLAR CLUSTER, RA=0H 22M 40.0S +/- 0.01S, DEC=- 2000 V=26.5 GLOBULAR CLUSTER 72D 4' 0.0" +/- 0.1", PLATE- B-V=0.5 ID=06B1 Comments: Flux a WD in 47 TUC; 5' from core; 2 WD0644+375 STAR,DB RA= 6H 47M 38.31S +/- 0.05S, 2000 V=12.07 DEC= +37D 31' 12.7" +/- 0.6", B=11.99 PLATE-ID=03Y4 U=11.07 Comments: Check PM; RA,DEC correct for J2000, including measured PM Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1982.806 -0.01946 -0.9288 0.0626 3 WD1647+591 STAR, DB RA=16H 48M 25.28S +/- 0.06S, 2000 V=12.23 DEC=+59D 03' 27.6" +/-0.5", B=12.40 PLATE-ID=00T2 U=11.77 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1983.614 0.01852 -0.3027 0.0817 4 WD2326+049 STAR, DB RA=23H 28M 48.10S +/- 0.1S, 2000 V=13.05 DEC=+5D 14' 59.0" +/- 0.1", B=13.22 PLATE-ID=0515 U=12.58 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1983.683 -0.03032 -0.2668 0.0735 5 WD0002+729 STAR, DB RA=00H 05M 06.09S +/- 0.01S, 2000 V=14.35 DEC=+73D 13' 07.4" +/- 0.1", B=14.41 PLATE-ID=02RF U=13.49 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1983.849 0.031 0.121 0.0288 6 WD1917-077 STAR, DB RA=19H 20M 35.01S +/- 0.04S, 2000 V=12.29 DEC=-07D 39' 57.6" +/- 0.6", B=12.35 PLATE-ID=060D U=11.52 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1987.413 -0.0041 -0.189 0.0098 6114( 18) - 08/29/95 10:56 - [ 5] Visit: 01 Visit Requirements: CVZ On Hold Comments: Additional Comments: This visit can be scheduled using 18 degree earth avoidance angle. Orbits 1 -6 have the full 96 minute target visibility. Orbits 7-14 have 65-75 minute visibility. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 800S FIX ------------------------------------------------------------------------------------------------------------------------------------ 11 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=DEF 1 2800S FIX ------------------------------------------------------------------------------------------------------------------------------------ 12 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX Comments: Orbit 1 should end roughly between exposures 12 and 20. ------------------------------------------------------------------------------------------------------------------------------------ 20 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 21 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=DEF 1 3200S FIX ------------------------------------------------------------------------------------------------------------------------------------ 22 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX Comments: Orbit 2 should end roughly between exposures 22 and 30. ------------------------------------------------------------------------------------------------------------------------------------ 30 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 31 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=DEF 1 3200S FIX ------------------------------------------------------------------------------------------------------------------------------------ 32 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX Comments: Orbit 3 should end roughly between exposures 32 and 40. ------------------------------------------------------------------------------------------------------------------------------------ 40 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 41 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=DEF 1 3200S FIX ------------------------------------------------------------------------------------------------------------------------------------ 42 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX Comments: Orbit 4 should end roughly between exposures 42 and 50. ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 50 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 51 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=DEF 1 3200S FIX ------------------------------------------------------------------------------------------------------------------------------------ 52 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX Comments: Orbit 5 should end roughly between exposures 52 and 60. ------------------------------------------------------------------------------------------------------------------------------------ 60 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 61 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=DEF 1 3200S FIX ------------------------------------------------------------------------------------------------------------------------------------ 62 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 6 should end between exposures 62 and 70. ------------------------------------------------------------------------------------------------------------------------------------ 70 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 71 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=NO 1 1900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 72 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 7 has 75 min of target visibility, and should end after exposure 72. ------------------------------------------------------------------------------------------------------------------------------------ 80 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 81 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=NO 1 1400S FIX ------------------------------------------------------------------------------------------------------------------------------------ 82 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 8 has 68 min of target visibility, and should end after exposure 82. ------------------------------------------------------------------------------------------------------------------------------------ 90 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 91 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=NO 1 1100S FIX ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 7] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 92 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 9 has 63 min of target visibility, and should end after exposure 92. ------------------------------------------------------------------------------------------------------------------------------------ 100 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 101 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=NO 1 1600S FIX ------------------------------------------------------------------------------------------------------------------------------------ 102 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 10 has 71 min of target visibility, and should end after exposure 102. ------------------------------------------------------------------------------------------------------------------------------------ 110 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX Comments: A guide star reacquisition must occur for orbits 11-14. ------------------------------------------------------------------------------------------------------------------------------------ 111 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=NO 1 1700S FIX ------------------------------------------------------------------------------------------------------------------------------------ 112 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 11 has 73 min of target visibility, and should end after exposure 112. ------------------------------------------------------------------------------------------------------------------------------------ 120 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 121 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=NO 1 1800S FIX ------------------------------------------------------------------------------------------------------------------------------------ 122 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 12 has 75 min of target visibility, and should end after exposure 122. ------------------------------------------------------------------------------------------------------------------------------------ 130 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 131 47TUC-WDF WFPC2 IMAGE WFALL- F555W CR-SPLIT=NO 1 1700S FIX ------------------------------------------------------------------------------------------------------------------------------------ 132 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 13 has 77 min of target visibility, and should end after exposure 132. ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 140 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S FIX ------------------------------------------------------------------------------------------------------------------------------------ 141 47TUC-WDF WFPC2 IMAGE WFALL- F814W CR-SPLIT=NO 1 1700S FIX ------------------------------------------------------------------------------------------------------------------------------------ 142 47TUC-WDF WFPC2 IMAGE WFALL- F336W CR-SPLIT=NO 1 900S END ORBIT FIX Comments: Orbit 14 has 75 min of target visibility, and should end after exposure 142. ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 9] Visit: 03 Visit Requirements: On Hold Comments: Additional Comments: READ=NO is not working; cannot fix it; please check Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 WD0644+375 WFPC2 IMAGE PC1 F336W READ=NO 1 1S SEQ 1-4 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 WD0644+375 WFPC2 IMAGE WF2 F336W READ=NO 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 3 WD0644+375 WFPC2 IMAGE WF3 F336W READ=NO 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 4 WD0644+375 WFPC2 IMAGE WF4 F336W READ=YES 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 5 WD0644+375 WFPC2 IMAGE PC1 F439W READ=NO 1 0.7S SEQ 5-8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 WD0644+375 WFPC2 IMAGE WF2 F439W READ=NO 1 0.7S ------------------------------------------------------------------------------------------------------------------------------------ 7 WD0644+375 WFPC2 IMAGE WF3 F439W READ=NO 1 0.7S ------------------------------------------------------------------------------------------------------------------------------------ 8 WD0644+375 WFPC2 IMAGE WF4 F439W READ=YES 1 0.7S ------------------------------------------------------------------------------------------------------------------------------------ 9 WD0644+375 WFPC2 IMAGE PC1 F555W READ=NO 1 0.18S SEQ 9-12 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 10 WD0644+375 WFPC2 IMAGE WF2 F555W READ=NO 1 0.18S ------------------------------------------------------------------------------------------------------------------------------------ 11 WD0644+375 WFPC2 IMAGE WF3 F555W READ=NO 1 0.18S ------------------------------------------------------------------------------------------------------------------------------------ 12 WD0644+375 WFPC2 IMAGE WF4 F555W READ=YES 1 0.18S ------------------------------------------------------------------------------------------------------------------------------------ 13 WD0644+375 WFPC2 IMAGE PC1 F814W READ=NO 1 0.5S SEQ 13-16 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 14 WD0644+375 WFPC2 IMAGE WF2 F814W READ=NO 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 15 WD0644+375 WFPC2 IMAGE WF3 F814W READ=NO 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 16 WD0644+375 WFPC2 IMAGE WF4 F814W READ=YES 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 10] Visit: 04 Visit Requirements: CVZ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 WD1647+591 WFPC2 IMAGE PC1 F336W READ=NO 1 5S SEQ 1-4 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 WD1647+591 WFPC2 IMAGE WF2 F336W READ=NO 1 5S ------------------------------------------------------------------------------------------------------------------------------------ 3 WD1647+591 WFPC2 IMAGE WF3 F336W READ=NO 1 5S ------------------------------------------------------------------------------------------------------------------------------------ 4 WD1647+591 WFPC2 IMAGE WF4 F336W READ=YES 1 5S ------------------------------------------------------------------------------------------------------------------------------------ 5 WD1647+591 WFPC2 IMAGE PC1 F439W READ=NO 1 1S SEQ 5-8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 WD1647+591 WFPC2 IMAGE WF2 F439W READ=NO 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 7 WD1647+591 WFPC2 IMAGE WF3 F439W READ=NO 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 8 WD1647+591 WFPC2 IMAGE WF4 F439W READ=YES 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 9 WD1647+591 WFPC2 IMAGE PC1 F555W READ=NO 1 0.2S SEQ 9-12 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 10 WD1647+591 WFPC2 IMAGE WF2 F555W READ=NO 1 0.2S ------------------------------------------------------------------------------------------------------------------------------------ 11 WD1647+591 WFPC2 IMAGE WF3 F555W READ=NO 1 0.2S ------------------------------------------------------------------------------------------------------------------------------------ 12 WD1647+591 WFPC2 IMAGE WF4 F555W READ=YES 1 0.2S ------------------------------------------------------------------------------------------------------------------------------------ 13 WD1647+591 WFPC2 IMAGE PC1 F814W READ=NO 1 0.4S SEQ 13-16 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 14 WD1647+591 WFPC2 IMAGE WF2 F814W READ=NO 1 0.4S ------------------------------------------------------------------------------------------------------------------------------------ 15 WD1647+591 WFPC2 IMAGE WF3 F814W READ=NO 1 0.4S ------------------------------------------------------------------------------------------------------------------------------------ 16 WD1647+591 WFPC2 IMAGE WF4 F814W READ=YES 1 0.4S ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 11] Visit: 05 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 WD2326+049 WFPC2 IMAGE PC1 F336W READ=NO 1 10S SEQ 1-4 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 WD2326+049 WFPC2 IMAGE WF2 F336W READ=NO 1 10S ------------------------------------------------------------------------------------------------------------------------------------ 3 WD2326+049 WFPC2 IMAGE WF3 F336W READ=NO 1 10S ------------------------------------------------------------------------------------------------------------------------------------ 4 WD2326+049 WFPC2 IMAGE WF4 F336W READ=YES 1 10S ------------------------------------------------------------------------------------------------------------------------------------ 5 WD2326+049 WFPC2 IMAGE PC1 F439W READ=NO 1 2.3S SEQ 5-8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 WD2326+049 WFPC2 IMAGE WF2 F439W READ=NO 1 2.3S ------------------------------------------------------------------------------------------------------------------------------------ 7 WD2326+049 WFPC2 IMAGE WF3 F439W READ=NO 1 2.3S ------------------------------------------------------------------------------------------------------------------------------------ 8 WD2326+049 WFPC2 IMAGE WF4 F439W READ=YES 1 2.3S ------------------------------------------------------------------------------------------------------------------------------------ 9 WD2326+049 WFPC2 IMAGE PC1 F555W READ=NO 1 0.5S SEQ 9-12 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 10 WD2326+049 WFPC2 IMAGE WF2 F555W READ=NO 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 11 WD2326+049 WFPC2 IMAGE WF3 F555W READ=NO 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 12 WD2326+049 WFPC2 IMAGE WF4 F555W READ=YES 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 13 WD2326+049 WFPC2 IMAGE PC1 F814W READ=NO 1 0.8S SEQ 13-16 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 14 WD2326+049 WFPC2 IMAGE WF2 F814W READ=NO 1 0.8S ------------------------------------------------------------------------------------------------------------------------------------ 15 WD2326+049 WFPC2 IMAGE WF3 F814W READ=NO 1 0.8S ------------------------------------------------------------------------------------------------------------------------------------ 16 WD2326+049 WFPC2 IMAGE WF4 F814W READ=YES 1 0.8S ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 12] Visit: 06 Visit Requirements: CVZ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 WD0002+729 WFPC2 IMAGE PC1 F336W READ=NO 1 20S SEQ 1-4 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 WD0002+729 WFPC2 IMAGE WF2 F336W READ=NO 1 20S ------------------------------------------------------------------------------------------------------------------------------------ 3 WD0002+729 WFPC2 IMAGE WF3 F336W READ=NO 1 20S ------------------------------------------------------------------------------------------------------------------------------------ 4 WD0002+729 WFPC2 IMAGE WF4 F336W READ=YES 1 20S ------------------------------------------------------------------------------------------------------------------------------------ 5 WD0002+729 WFPC2 IMAGE PC1 F439W READ=NO 1 6S SEQ 5-8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 WD0002+729 WFPC2 IMAGE WF2 F439W READ=NO 1 6S ------------------------------------------------------------------------------------------------------------------------------------ 7 WD0002+729 WFPC2 IMAGE WF3 F439W READ=NO 1 6S ------------------------------------------------------------------------------------------------------------------------------------ 8 WD0002+729 WFPC2 IMAGE WF4 F439W READ=YES 1 6S ------------------------------------------------------------------------------------------------------------------------------------ 9 WD0002+729 WFPC2 IMAGE PC1 F555W READ=NO 1 1.4S SEQ 9-12 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 10 WD0002+729 WFPC2 IMAGE WF2 F555W READ=NO 1 1.4S ------------------------------------------------------------------------------------------------------------------------------------ 11 WD0002+729 WFPC2 IMAGE WF3 F555W READ=NO 1 1.4S ------------------------------------------------------------------------------------------------------------------------------------ 12 WD0002+729 WFPC2 IMAGE WF4 F555W READ=YES 1 1.4S ------------------------------------------------------------------------------------------------------------------------------------ 13 WD0002+729 WFPC2 IMAGE PC1 F814W READ=NO 1 3.5S SEQ 13-16 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 14 WD0002+729 WFPC2 IMAGE WF2 F814W READ=NO 1 3.5S ------------------------------------------------------------------------------------------------------------------------------------ 15 WD0002+729 WFPC2 IMAGE WF3 F814W READ=NO 1 3.5S ------------------------------------------------------------------------------------------------------------------------------------ 16 WD0002+729 WFPC2 IMAGE WF4 F814W READ=YES 1 3.5S ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 13] Visit: 07 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 WD1917-077 WFPC2 IMAGE PC1 F336W READ=NO 1 5S SEQ 1-4 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 WD1917-077 WFPC2 IMAGE WF2 F336W READ=NO 1 5S ------------------------------------------------------------------------------------------------------------------------------------ 3 WD1917-077 WFPC2 IMAGE WF3 F336W READ=NO 1 5S ------------------------------------------------------------------------------------------------------------------------------------ 4 WD1917-077 WFPC2 IMAGE WF4 F336W READ=YES 1 5S ------------------------------------------------------------------------------------------------------------------------------------ 5 WD1917-077 WFPC2 IMAGE PC1 F439W READ=NO 1 1S SEQ 5-8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 WD1917-077 WFPC2 IMAGE WF2 F439W READ=NO 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 7 WD1917-077 WFPC2 IMAGE WF3 F439W READ=NO 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 8 WD1917-077 WFPC2 IMAGE WF4 F439W READ=YES 1 1S ------------------------------------------------------------------------------------------------------------------------------------ 9 WD1917-077 WFPC2 IMAGE PC1 F555W READ=NO 1 0.23S SEQ 9-12 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 10 WD1917-077 WFPC2 IMAGE WF2 F555W READ=NO 1 0.23S ------------------------------------------------------------------------------------------------------------------------------------ 11 WD1917-077 WFPC2 IMAGE WF3 F555W READ=NO 1 0.23S ------------------------------------------------------------------------------------------------------------------------------------ 12 WD1917-077 WFPC2 IMAGE WF4 F555W READ=YES 1 0.23S ------------------------------------------------------------------------------------------------------------------------------------ 13 WD1917-077 WFPC2 IMAGE PC1 F814W READ=NO 1 0.5S SEQ 13-16 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 14 WD1917-077 WFPC2 IMAGE WF2 F814W READ=NO 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 15 WD1917-077 WFPC2 IMAGE WF3 F814W READ=NO 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 16 WD1917-077 WFPC2 IMAGE WF4 F814W READ=YES 1 0.5S ------------------------------------------------------------------------------------------------------------------------------------ 6114( 18) - 08/29/95 10:56 - [ 14] Summary Form for Proposal 6114 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO CR-SPLIT=DEF READ=NO READ=YES ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category Stellar Populations ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CVZ END ORBIT SEQ 1-4 NON-INT SEQ 5-8 NON-INT SEQ 9-12 NON-INT SEQ 13-16 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W F555W F814W F439W ------------------------------------------------------------------------------------------------------------------------------------ Target Names 47TUC-WDF WD0644+375 WD1647+591 WD2326+049 WD0002+729 WD1917-077 ------------------------------------------------------------------------------------------------------------------------------------