10500( 3) - 07/05/05 14:05 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10500 Version: 3 Check-in Time: 05-Jul-2005 18:04:05 Title Exploring the Bottom End of the White Dwarf Cooling Sequence in the Galactic Open Cluster NGC2158 ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 14 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Luigi R. Bedin European Southern Observatory - Germany CoI: Prof. Giampaolo Piotto Universita di Padova Y CoI: Dr. Ivan R. King University of Washington N CoI: Dr. Jay Anderson Rice University N CoI: Dr. Maurizio Salaris Liverpool John Moores University N CoI: Dr. Yazan Momany Universita di Padova N CoI: Dr. Santi Cassisi INAF, Osservatorio Astronomico di Teramo N ------------------------------------------------------------------------------------ Abstract The recent discovery by our group of an unexpectedly bright and still unexplained peak in the white dwarf (WD) luminosity function (LF) of the metal rich, old open cluster NGC6791 casts serious doubts on our understanding of the physical process which rules the formation and the cooling of WDs. In order to investigate whether the same problem is present in other open clusters with different ages and metallicities, we propose deep ACS/HST observations reaching the bottom end of the WD LFs, for the first time in a young and so popolous Galactic open cluster: NGC2158. ------------------------------------------------------------------------------------ 10500( 3) - 07/05/05 14:05 - [ 2] Observations Description ------------------------ We propose to study the white dwarf cooling sequence (WDCS) of the open cluster NGC2158 with ACS/WFC. Other goals of this proposal are: i) determination of proper motions, in order to discern cluster members, from foreground blue stars ii) study the bright part of the WDCS in the outskirts of the clusters using WFPC2 parallely fields for which there will be no proper motions. To get proper motions for the stars in the ACS/WFC field we split our observations into two visits, with a separation of at least 6 months. We found that in 2-gyro mode we could get a 13-month separation between visits. This also gives us WFPC2 parallel observations in different locations in the cluster, so that we have more field-coverage for better statistics of the outer cluster population. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- In order to ensure a sufficient time baseline between the epochs, it is important to take the first visit during its earliest window (Oct 2005), and the second visit during its latest window (Nov 2006). ------------------------------------------------------------------------------------ 10500( 3) - 07/05/05 14:05 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-2158-OFF STELLAR CLUSTER, OPEN RA=06H07M35.2740S +/- 0.1", J2000 V = 28.2 CLUSTER DEC=+24D06'1.48" +/- 0.1" Coordinate Source: Other_Source: DSS 10500( 3) - 07/05/05 14:05 - [ 4] Visit: 01 Visit Priority: Visit Requirements: ORIENT 180.0D TO 252.5 D; BETWEEN 24-OCT-2005:00:00:00 AND 29-OCT- 2005:00:00:00 On Hold Comments: Additional Comments: This is the first epoch visit Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO,GAIN=2 1 0.5 S F ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1145 S PAR 3 WITH 2 F ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1130 S PAR 5 WITH 4 F ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.52, 0.27 F ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.52, 0.27; PAR F 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.52, 0.27; PAR F 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.29, 0.52 F ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.29, 0.52; PAR F 13 WITH 12 ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 10500( 3) - 07/05/05 14:05 - [ 5] Exposures ----------------------------------------------------------------------------------------------------------------------------------- Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ----------------------------------------------------------------------------------------------------------------------------------- 14 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.29, 0.52; PAR F 15 WITH 14 ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.01, 3.03 F ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.01, 3.03; PAR F 18 WITH 17 ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 19 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.01, 3.03; PAR F 20 WITH 19 ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.28, 3.29 F ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.28, 3.29; PAR F 23 WITH 22 ------------------------------------------------------------------------------------------------------------------------------------ 23 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 24 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.28, 3.29; PAR F 25 WITH 24 ------------------------------------------------------------------------------------------------------------------------------------ 25 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-2158-OFF 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A NGC-2158-OFF 2 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A NGC-2158-OFF 3 WFPC2 IMAGE WFALL F606W none none none none 1 N/A NGC-2158-OFF 4 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A NGC-2158-OFF 5 WFPC2 IMAGE WFALL F814W none none none none 1 N/A NGC-2158-OFF 6 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A 10500( 3) - 07/05/05 14:05 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-2158-OFF 7 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A NGC-2158-OFF 8 WFPC2 IMAGE WFALL F606W none none none none 2 N/A NGC-2158-OFF 9 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A NGC-2158-OFF 10 WFPC2 IMAGE WFALL F814W none none none none 2 N/A NGC-2158-OFF 11 ACS/WFC ACCUM WFCENTER F814W none none none none 3 N/A NGC-2158-OFF 12 ACS/WFC ACCUM WFCENTER F606W none none none none 3 N/A NGC-2158-OFF 13 WFPC2 IMAGE WFALL F606W none none none none 3 N/A NGC-2158-OFF 14 ACS/WFC ACCUM WFCENTER F814W none none none none 3 N/A NGC-2158-OFF 15 WFPC2 IMAGE WFALL F814W none none none none 3 N/A NGC-2158-OFF 16 ACS/WFC ACCUM WFCENTER F606W none none none none 4 N/A NGC-2158-OFF 17 ACS/WFC ACCUM WFCENTER F606W none none none none 4 N/A NGC-2158-OFF 18 WFPC2 IMAGE WFALL F606W none none none none 4 N/A NGC-2158-OFF 19 ACS/WFC ACCUM WFCENTER F814W none none none none 4 N/A NGC-2158-OFF 20 WFPC2 IMAGE WFALL F814W none none none none 4 N/A NGC-2158-OFF 21 ACS/WFC ACCUM WFCENTER F606W none none none none 5 N/A NGC-2158-OFF 22 ACS/WFC ACCUM WFCENTER F606W none none none none 5 N/A NGC-2158-OFF 23 WFPC2 IMAGE WFALL F606W none none none none 5 N/A NGC-2158-OFF 24 ACS/WFC ACCUM WFCENTER F814W none none none none 5 N/A NGC-2158-OFF 25 WFPC2 IMAGE WFALL F814W none none none none 5 N/A 10500( 3) - 07/05/05 14:05 - [ 7] Visit: 02 Visit Priority: Visit Requirements: ORIENT 285.0D TO 330.0 D; BETWEEN 09-NOV-2006:00:00:00 AND 22-NOV- 2006:00:00:00 On Hold Comments: Additional Comments: This is the second epoch visit Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO,GAIN=2 1 0.5 S F ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1145 S PAR 3 WITH 2 F ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1130 S PAR 5 WITH 4 F ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.52, 0.27 F ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.52, 0.27; PAR F 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.52, 0.27; PAR F 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.29, 0.52 F ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.29, 0.52; PAR F 13 WITH 12 ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 10500( 3) - 07/05/05 14:05 - [ 8] Exposures ----------------------------------------------------------------------------------------------------------------------------------- Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ----------------------------------------------------------------------------------------------------------------------------------- 14 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.29, 0.52; PAR F 15 WITH 14 ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.01, 3.03 F ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.01, 3.03; PAR F 18 WITH 17 ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 19 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.01, 3.03; PAR F 20 WITH 19 ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO,GAIN=2 1 20 S POS TARG 0.28, 3.29 F ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC-2158-OF ACS/WFC ACCUM WFCENTER F606W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.28, 3.29; PAR F 23 WITH 22 ------------------------------------------------------------------------------------------------------------------------------------ 23 NGC-2158-OF WFPC2 IMAGE WFALL F606W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 24 NGC-2158-OF ACS/WFC ACCUM WFCENTER F814W GAIN=2,CR-SPLIT=NO 1 1150 S POS TARG 0.28, 3.29; PAR F 25 WITH 24 ------------------------------------------------------------------------------------------------------------------------------------ 25 NGC-2158-OF WFPC2 IMAGE WFALL F814W ATD-GAIN=7,CR-SPLIT=NO 1 900 S F ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-2158-OFF 1 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A NGC-2158-OFF 2 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A NGC-2158-OFF 3 WFPC2 IMAGE WFALL F606W none none none none 1 N/A NGC-2158-OFF 4 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A NGC-2158-OFF 5 WFPC2 IMAGE WFALL F814W none none none none 1 N/A NGC-2158-OFF 6 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A 10500( 3) - 07/05/05 14:05 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-2158-OFF 7 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A NGC-2158-OFF 8 WFPC2 IMAGE WFALL F606W none none none none 2 N/A NGC-2158-OFF 9 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A NGC-2158-OFF 10 WFPC2 IMAGE WFALL F814W none none none none 2 N/A NGC-2158-OFF 11 ACS/WFC ACCUM WFCENTER F606W none none none none 3 N/A NGC-2158-OFF 12 ACS/WFC ACCUM WFCENTER F606W none none none none 3 N/A NGC-2158-OFF 13 WFPC2 IMAGE WFALL F606W none none none none 3 N/A NGC-2158-OFF 14 ACS/WFC ACCUM WFCENTER F814W none none none none 3 N/A NGC-2158-OFF 15 WFPC2 IMAGE WFALL F814W none none none none 3 N/A NGC-2158-OFF 16 ACS/WFC ACCUM WFCENTER F814W none none none none 4 N/A NGC-2158-OFF 17 ACS/WFC ACCUM WFCENTER F606W none none none none 4 N/A NGC-2158-OFF 18 WFPC2 IMAGE WFALL F606W none none none none 4 N/A NGC-2158-OFF 19 ACS/WFC ACCUM WFCENTER F814W none none none none 4 N/A NGC-2158-OFF 20 WFPC2 IMAGE WFALL F814W none none none none 4 N/A NGC-2158-OFF 21 ACS/WFC ACCUM WFCENTER F814W none none none none 5 N/A NGC-2158-OFF 22 ACS/WFC ACCUM WFCENTER F606W none none none none 5 N/A NGC-2158-OFF 23 WFPC2 IMAGE WFALL F606W none none none none 5 N/A NGC-2158-OFF 24 ACS/WFC ACCUM WFCENTER F814W none none none none 5 N/A NGC-2158-OFF 25 WFPC2 IMAGE WFALL F814W none none none none 5 N/A 10500( 3) - 07/05/05 14:05 - [ 10] Summary Form for Proposal 10500 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFCENTER WFALL ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO GAIN=2 ATD-GAIN=7 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 180.0D TO 252.5 D; BETWEEN 24-OCT-2005 00 00 00 AND 29-OCT-2005 00 00 00 PAR 3 WITH 2 PAR 5 WITH 4 POS TARG 0.52, 0.27 POS TARG 0.52, 0.27; PAR 8 WITH 7 POS TARG 0.52, 0.27; PAR 10 WITH 9 POS TARG 0.29, 0.52 POS TARG 0.29, 0.52; PAR 13 WITH 12 POS TARG 0.29, 0.52; PAR 15 WITH 14 POS TARG 0.01, 3.03 POS TARG 0.01, 3.03; PAR 18 WITH 17 POS TARG 0.01, 3.03; PAR 20 WITH 19 POS TARG 0.28, 3.29 POS TARG 0.28, 3.29; PAR 23 WITH 22 POS TARG 0.28, 3.29; PAR 25 WITH 24 ORIENT 285.0D TO 330.0 D; BETWEEN 09-NOV-2006 00 00 00 AND 22-NOV-2006 00 00 00 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-2158-OFF ------------------------------------------------------------------------------------------------------------------------------------