10121( 3) - 06/22/04 13:51 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10121 Version: 3 Check-in Date: 22-Jun-2004 17:47:04 1.Proposal Title: The Core Dynamics of the Dense Globular Cluster NGC 6752 ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle 4. Parallel Pointing Tolerance GO 13 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Dr. Charles David Bailyn Yale University CoI: Dr. Gordon A. Drukier Yale University N CoI: Dr. William F. van Altena Yale University N CoI: Dr. Terrence M. Girard Yale University N CoI: Mr. Bing Zhao Yale University N ------------------------------------------------------------------------------------ 6. Abstract NGC 6752 is one of the best-studied dense globular clusters, and a wide variety of intriguing and anomalous results have been obtained. We propose ACS imaging of the core of this cluster. This will increase the accuracy of our previous internal proper motion measurements by almost an order of magnitude, providing an unprecedented probe of the central potential. The data will also greatly increase the radial extent of previous work on the binary frequency and luminosity function of this cluster. Together, the data will provide a new level of constraints on the dynamics of a dense globular cluster. ------------------------------------------------------------------------------------ 10121( 3) - 06/22/04 13:51 - [ 2] Observations Description ------------------------ On each orbit of the single visit, we will take two short F555W and two short F814W exposures with a gap-filling dither between the two exposures. These will be our primary astrometric frames. In addition, at each position we will take a long F555W exposure in order to reach as deep in this band as in F814W. There is a small scale dither between orbits in order to allow for cosmic-ray removal and hot-pixel corrections. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10121( 3) - 06/22/04 13:51 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6752 STELLAR CLUSTER, RA=19H10M54.61S +/- 0.1", DEC=- J2000 V = 16.0 GLOBULAR CLUSTER 59D58'47.15" +/- 0.1", PLATE- ID=03D3 Coordinate Source: GSC_SURVEY_PLATE 10121( 3) - 06/22/04 13:51 - [ 4] Visit: 01 Visit Priority: Visit Requirements: ORIENT 62.13D TO 62.13 D 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 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S POS TARG -4.283,-54.194; SEQ 1-5 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S POS TARG -4.036,-51.21 ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S SAME POS AS 4 ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S POS TARG -4.175,-54.012; SEQ 6-11 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 6 ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S SAME POS AS 6 ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 10 ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S POS TARG -3.928,-51.028 ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S SAME POS AS 10 ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S POS TARG -4.068,-54.169; SEQ 12-17 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 12 ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S SAME POS AS 12 ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 16 ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S POS TARG -3.821,-51.185 ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S SAME POS AS 16 ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S POS TARG -4.258,-54.051; SEQ 18-23 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 10121( 3) - 06/22/04 13:51 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 19 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 18 ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S SAME POS AS 18 ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 22 ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S POS TARG -4.011,-51.067 ------------------------------------------------------------------------------------------------------------------------------------ 23 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S SAME POS AS 22 ------------------------------------------------------------------------------------------------------------------------------------ 24 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S POS TARG -4.151,-54.167; SEQ 24-29 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 25 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 24 ------------------------------------------------------------------------------------------------------------------------------------ 26 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S SAME POS AS 24 ------------------------------------------------------------------------------------------------------------------------------------ 27 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 28 ------------------------------------------------------------------------------------------------------------------------------------ 28 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S POS TARG -3.904,-51.183 ------------------------------------------------------------------------------------------------------------------------------------ 29 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S SAME POS AS 28 ------------------------------------------------------------------------------------------------------------------------------------ 30 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S POS TARG -4.043,-54.043; SEQ 30-35 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 31 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 30 ------------------------------------------------------------------------------------------------------------------------------------ 32 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S SAME POS AS 30 ------------------------------------------------------------------------------------------------------------------------------------ 33 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 435 S SAME POS AS 34 ------------------------------------------------------------------------------------------------------------------------------------ 34 NGC6752 ACS/WFC ACCUM WFC1 F555W CR-SPLIT=NO,GAIN=2 1 80 S POS TARG -3.796,-51.059 ------------------------------------------------------------------------------------------------------------------------------------ 35 NGC6752 ACS/WFC ACCUM WFC1 F814W CR-SPLIT=NO,GAIN=2 1 40 S SAME POS AS 34 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 01 1 none none none none 1 tbd 01 2 none none none none 1 tbd 01 3 none none none none 1 tbd 01 4 none none none none 1 tbd 01 5 none none none none 1 tbd 01 6 none none none none 2 tbd 10121( 3) - 06/22/04 13:51 - [ 6] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Visit Id| Exp Id |Primary |Secondary |Iteration |CR-SPLIT |Orbit Num |Duration | |Pattern Pos |Pattern Pos |Num |Num | | ------------------------------------------------------------------------------------------------------------------------------------ 01 7 none none none none 2 tbd 01 8 none none none none 2 tbd 01 9 none none none none 2 tbd 01 10 none none none none 2 tbd 01 11 none none none none 2 tbd 01 12 none none none none 3 tbd 01 13 none none none none 3 tbd 01 14 none none none none 3 tbd 01 15 none none none none 3 tbd 01 16 none none none none 3 tbd 01 17 none none none none 3 tbd 01 18 none none none none 4 tbd 01 19 none none none none 4 tbd 01 20 none none none none 4 tbd 01 21 none none none none 4 tbd 01 22 none none none none 4 tbd 01 23 none none none none 4 tbd 01 24 none none none none 5 tbd 01 25 none none none none 5 tbd 01 26 none none none none 5 tbd 01 27 none none none none 5 tbd 01 28 none none none none 5 tbd 01 29 none none none none 5 tbd 01 30 none none none none 6 tbd 01 31 none none none none 6 tbd 01 32 none none none none 6 tbd 01 33 none none none none 6 tbd 01 34 none none none none 6 tbd 01 35 none none none none 6 tbd 10121( 3) - 06/22/04 13:51 - [ 7] Summary Form for Proposal 10121 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO GAIN=2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 62.13D TO 62.13 D POS TARG -4.283,-54.194; SEQ 1-5 NON-INT SAME POS AS 1 POS TARG -4.036,-51.21 SAME POS AS 4 POS TARG -4.175,-54.012; SEQ 6-11 NON-INT SAME POS AS 6 SAME POS AS 10 POS TARG -3.928,-51.028 POS TARG -4.068,-54.169; SEQ 12-17 NON-INT SAME POS AS 12 SAME POS AS 16 POS TARG -3.821,-51.185 POS TARG -4.258,-54.051; SEQ 18-23 NON-INT SAME POS AS 18 SAME POS AS 22 POS TARG -4.011,-51.067 POS TARG -4.151,-54.167; SEQ 24-29 NON-INT SAME POS AS 24 SAME POS AS 28 POS TARG -3.904,-51.183 POS TARG -4.043,-54.043; SEQ 30-35 NON-INT SAME POS AS 30 SAME POS AS 34 POS TARG -3.796,-51.059 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W F555W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC6752 ------------------------------------------------------------------------------------------------------------------------------------