10631( 4) - 09/16/05 14:23 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10631 Version: 4 Check-in Time: 16-Sep-2005 18:22:28 Title Intermediate-Age Globular Clusters in M31 ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 14 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Thomas H. Puzia Space Telescope Science Institute CoI: Dr. Rupali Chandar Space Telescope Science Institute N CoI: Dr. Paul Goudfrooij Space Telescope Science Institute N CoI: Dr. Thomas M. Brown Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract We propose deep ACS/WFC imaging of four halo M31 globular clusters in order to derive their horizontal branch morphologies. Our spectroscopic investigation of their integrated light identifies them as members of an intermediate-age population of globular clusters in M31. Since our spectroscopic results are based on the analysis of Balmer absorption lines, we need to secure our results against an artificial juvenation due to extreme horizontal branch morphologies. The proposed observations will allow a clear-cut answer to the question of whether spectroscopically derived intermediate-age estimates are due to genuinely younger ages or are the result of anomalously hot horizontal branch morphologies. Either way, our results will have important implications for spectroscopically derived ages and metallicities of distant stellar populations. Because of the high spatial resolution of the proposed ACS/WFC observations we will also derive accurate surface brightness profiles of our target globular clusters and investigate the influence of stellar density on horizontal branch morphology. Moreover, together with deep parallel WFPC2 fields we will study the metallicity dispersion of the background stellar population in M31 as a function of galactocentric radius. ------------------------------------------------------------------------------------ 10631( 4) - 09/16/05 14:23 - [ 2] Observations Description ------------------------ We will observe resolved globular clusters in M31 in the two filters F435W and F606W, using the wide-field channel of ACS. To optimize the scientific output of the images two pointings (B337-336 and B058-049) contain more than one globular cluster. Another pointing contains one confirmed (B350) and one candidate globular cluster. The fourth pointing includes only one globular cluster (B292). For the fields with multiple objects we set orientation requirements to guarantee the best coverage of all targets. The B292 pointing additional orient constraints were added to avoid a bright star in the field of view. All roll angle requirements have little impact on the schedulability of the observations. Coordinated parallel observations in the filters F450W and F606W will be carried out with WFPC2 in order to sample the field stellar population of M31. In order to be as complete as possible for the much cooler WFPC2 targets, we choose to observe with WFPC2 in F450W when ACS is observing in the F606W filter, and in F606W when ACS will be taking integrations through the F435W filter. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10631( 4) - 09/16/05 14:23 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B337- EXT-CLUSTER, GLOBULAR RA=00H40M48.0720S +/- 0.1", J2000 V = 17.811+/-0.05 336 CLUSTER DEC=+42D10'27.44" +/- 0.1" B = 18.52 Coordinate Source: Other_Source: Galleti et al. (2004) Comments: Coordinates were taken from Galleti et al. (2004, A&A 416, 917) 2 M31GC-B058- EXT-CLUSTER, GLOBULAR RA=00H41M47.5914S +/- 0.1", J2000 V = 14.97+/-0.05 049 CLUSTER DEC=+40D48'29.37" +/- 0.1" B = 15.81 Coordinate Source: Other_Source: Galleti et al. (2004) Comments: Coordinates were taken from Galleti et al. (2004, A&A 416, 917) 3 M31GC-B292 EXT-CLUSTER, GLOBULAR RA=00H36M16.5900S +/- 0.1", J2000 V = 17.0+/-0.05 CLUSTER DEC=+40D58'26.64" +/- 0.1" B = 17.89 Coordinate Source: Other_Source: Galleti et al. (2004) Comments: Coordinates were taken from Galleti et al. (2004, A&A 416, 917) 4 M31GC-B350 EXT-CLUSTER, GLOBULAR RA=00H42M28.3300S +/- 0.1", J2000 V = 16.74+/-0.05 CLUSTER DEC=+40D24'50.18" +/- 0.1" B = 17.36 Coordinate Source: Other_Source: Galleti et al. (2004) Comments: Coordinates were taken from Galleti et al. (2004, A&A 416, 917) 10631( 4) - 09/16/05 14:23 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.171 Line_Spacing 0.171 Coordinate_Frame POS-TARG Pattern_Orient 30.16 Angle_Between_Sides 145.82 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.17 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 47.23 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 10631( 4) - 09/16/05 14:23 - [ 5] Visit: 01 Visit Priority: Visit Requirements: ORIENT 30.0D TO 65.0 D; ORIENT 125.0D TO 153.0 D; ORIENT 206.0D TO 246.0 D; ORIENT 301.0D TO 333.0 D On Hold Comments: Additional Comments: This visit includes a pair of clusters (B337 and B336) that can be simultaneously observed, placing the ACS field so that each clusters lies in one corner of the field of view. Consequently, four different roll angle windows, which are specified in the orientation requirements, are optimal to perform this observation. The first roll angle window (30-65 deg) should have lower priority, as a bright star is contaminating the coordinated parallel WFPC2 observations. Higher priority should therefore be given to the last three orient windows with roll angles >125 deg. The optimal orient angles are 47 and 227 degrees. We provide here the J2000 coordinates for the two globular clusters B337: 00 40 48.45, +42 12 11.45 and B336: 00 40 47.57, +42 08 41.38. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B337- ACS/WFC ACCUM WFCENTER F435W CR-SPLIT=NO 1 900 S PATTERN 1 1-2; PAR 2 WITH 336 see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F606W CR-SPLIT=NO 1 200 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F435W 1 none none none 1 1200.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F435W 2 none none none 1 1250.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F435W 3 none none none 2 1200.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F435W 4 none none none 2 1250.0 S ANY 2 WFPC2 IMAGE WFALL F606W 1 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 2 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 3 none none none 2 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 4 none none none 2 1000.0 S 10631( 4) - 09/16/05 14:23 - [ 6] Visit: 02 Visit Priority: Visit Requirements: ORIENT 350.0D TO 27.0 D; ORIENT 82.0D TO 115.0 D; ORIENT 166.0D TO 205.0 D; ORIENT 258.0D TO 295.0 D On Hold Comments: Additional Comments: In this visit we aim to include three globular cluster in one pointing (B058, B049, and B206D). The primary target is B058. To maximize schedulability the roll angles were optimized to include the clusters B058 and B049 only. The ideal roll angles of 97 and 277 deg include all three clusters within one ACS pointing. The J2000 coordinates of all three clusters are: B058: 00 41 53.01, +40 47 08.63; B049: 00 41 45.60, +40 49 53.73; B206D: 00 41 40.596, +40 50 06.90. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B058- ACS/WFC ACCUM WFCENTER F435W CR-SPLIT=NO 1 1305 S PATTERN 1 1-2; PAR 2 WITH 049 see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F606W CR-SPLIT=NO 1 1100 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F435W 1 none none none 1 1200.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F435W 2 none none none 1 1200.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F435W 3 none none none 2 1200.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F435W 4 none none none 2 1200.0 S ANY 2 WFPC2 IMAGE WFALL F606W 1 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 2 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 3 none none none 2 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 4 none none none 2 1000.0 S 10631( 4) - 09/16/05 14:23 - [ 7] Visit: 03 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B292 ACS/WFC ACCUM WFC2 F435W CR-SPLIT=NO 1 1305 S PATTERN 1 1-2; PAR 2 WITH see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F606W CR-SPLIT=NO 1 1100 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B292 1 ACS/WFC ACCUM WFC2 F435W 1 none none none 1 1200.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F435W 2 none none none 1 1250.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F435W 3 none none none 2 1200.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F435W 4 none none none 2 1250.0 S ANY 2 WFPC2 IMAGE WFALL F606W 1 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 2 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 3 none none none 2 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 4 none none none 2 1000.0 S 10631( 4) - 09/16/05 14:23 - [ 8] Visit: 04 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B350 ACS/WFC ACCUM WFC1 F435W CR-SPLIT=NO 1 1305 S PATTERN 1 1-2; PAR 2 WITH see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F606W CR-SPLIT=NO 1 1100 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B350 1 ACS/WFC ACCUM WFC1 F435W 1 none none none 1 1200.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F435W 2 none none none 1 1250.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F435W 3 none none none 2 1200.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F435W 4 none none none 2 1250.0 S ANY 2 WFPC2 IMAGE WFALL F606W 1 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 2 none none none 1 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 3 none none none 2 1000.0 S ANY 2 WFPC2 IMAGE WFALL F606W 4 none none none 2 1000.0 S 10631( 4) - 09/16/05 14:23 - [ 9] Visit: 05 Visit Priority: Visit Requirements: ORIENT 30.0D TO 65.0 D; ORIENT 125.0D TO 153.0 D; ORIENT 206.0D TO 246.0 D; ORIENT 301.0D TO 333.0 D On Hold Comments: Additional Comments: This visit includes a pair of clusters (B337 and B336) that can be simultaneously observed, placing the ACS field so that each clusters lies in one corner of the field of view. Consequently, four different roll angle windows, which are specified in the orientation requirements, are optimal to perform this observation. The first roll angle window (30-65 deg) should have lower priority, as a bright star is contaminating the coordinated parallel WFPC2 observations. Higher priority should therefore be given to the last three orient windows with roll angles >125 deg. The optimal orient angles are 47 and 227 degrees. We provide here the J2000 coordinates for the two globular clusters B337: 00 40 48.45, +42 12 11.45 and B336: 00 40 47.57, +42 08 41.38. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B337- ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 2 1200 S PATTERN 2 1-2; PAR 2 WITH 336 see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F450W CR-SPLIT=NO 2 1100 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F606W 1 none 1 none 1 1250.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F606W 1 none 2 none 1 1250.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F606W 2 none 1 none 2 1250.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F606W 2 none 2 none 2 1250.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F606W 3 none 1 none 3 1250.0 S M31GC-B337-336 1 ACS/WFC ACCUM WFCENTER F606W 3 none 2 none 3 1250.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 1 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 2 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 1 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 2 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 1 none 3 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 2 none 3 1100.0 S 10631( 4) - 09/16/05 14:23 - [ 10] Visit: 06 Visit Priority: Visit Requirements: ORIENT 350.0D TO 27.0 D; ORIENT 82.0D TO 115.0 D; ORIENT 166.0D TO 205.0 D; ORIENT 258.0D TO 295.0 D On Hold Comments: Additional Comments: In this visit we aim to include three globular cluster in one pointing (B058, B049, and B206D). The primary target is B058. To maximize schedulability the roll angles were optimized to include the clusters B058 and B049 only. The ideal roll angles of 97 and 277 deg include all three clusters within one ACS pointing. The J2000 coordinates of all three clusters are: B058: 00 41 53.01, +40 47 08.63; B049: 00 41 45.60, +40 49 53.73; B206D: 00 41 40.596, +40 50 06.90. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B058- ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 2 1315 S PATTERN 2 1-2; PAR 2 WITH 049 see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F450W CR-SPLIT=NO 2 1300 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F606W 1 none 1 none 1 1250.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F606W 1 none 2 none 1 1250.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F606W 2 none 1 none 2 1250.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F606W 2 none 2 none 2 1250.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F606W 3 none 1 none 3 1250.0 S M31GC-B058-049 1 ACS/WFC ACCUM WFCENTER F606W 3 none 2 none 3 1250.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 1 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 2 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 1 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 2 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 1 none 3 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 2 none 3 1100.0 S 10631( 4) - 09/16/05 14:23 - [ 11] Visit: 07 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B292 ACS/WFC ACCUM WFC2 F606W CR-SPLIT=NO 2 1315 S PATTERN 2 1-2; PAR 2 WITH see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F450W CR-SPLIT=NO 2 1300 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B292 1 ACS/WFC ACCUM WFC2 F606W 1 none 1 none 1 1250.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F606W 1 none 2 none 1 1250.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F606W 2 none 1 none 2 1250.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F606W 2 none 2 none 2 1250.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F606W 3 none 1 none 3 1250.0 S M31GC-B292 1 ACS/WFC ACCUM WFC2 F606W 3 none 2 none 3 1250.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 1 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 2 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 1 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 2 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 1 none 3 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 2 none 3 1100.0 S 10631( 4) - 09/16/05 14:23 - [ 12] Visit: 08 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M31GC-B350 ACS/WFC ACCUM WFC1 F606W CR-SPLIT=NO 2 1315 S PATTERN 2 1-2; PAR 2 WITH see below 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFPC2 IMAGE WFALL F450W CR-SPLIT=NO 2 1300 S see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ M31GC-B350 1 ACS/WFC ACCUM WFC1 F606W 1 none 1 none 1 1250.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F606W 1 none 2 none 1 1250.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F606W 2 none 1 none 2 1250.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F606W 2 none 2 none 2 1250.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F606W 3 none 1 none 3 1250.0 S M31GC-B350 1 ACS/WFC ACCUM WFC1 F606W 3 none 2 none 3 1250.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 1 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 1 none 2 none 1 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 1 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 2 none 2 none 2 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 1 none 3 1100.0 S ANY 2 WFPC2 IMAGE WFALL F450W 3 none 2 none 3 1100.0 S 10631( 4) - 09/16/05 14:23 - [ 13] Summary Form for Proposal 10631 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFCENTER WFALL WFC2 WFC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 30.0D TO 65.0 D; ORIENT 125.0D TO 153.0 D; ORIENT 206.0D TO 246.0 D; ORIENT 301.0D TO 333.0 D PATTERN 1 1-2; PAR 2 WITH 1 ORIENT 350.0D TO 27.0 D; ORIENT 82.0D TO 115.0 D; ORIENT 166.0D TO 205.0 D; ORIENT 258.0D TO 295.0 D PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F435W F606W F450W ------------------------------------------------------------------------------------------------------------------------------------ Target Names M31GC-B337-336 ANY M31GC-B058-049 M31GC-B292 M31GC-B350 ------------------------------------------------------------------------------------------------------------------------------------