12273( 3) - 16-Aug-2010 16:00:14 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12273 Version: 3 Check-in Time: 16-Aug-2010 16:00:14 STScI Edit Number: 0 Title Mass of the Local Group from Proper Motions of Distant Dwarf Galaxies ------------------------------------------------------------------------------------ Type Cycle GO 18 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Roeland P. van der Marel Space Telescope Science Institute CoI: Dr. Sangmo Tony Sohn Space Telescope Science Institute N CoI: Dr. Jay Anderson Space Telescope Science Institute N CoI: Prof. James S. Bullock University of California - Irvine N ------------------------------------------------------------------------------------ Abstract The Local Group and its two dominant spirals, the Milky Way and M31, have become the benchmark for testing many aspects of cosmological and galaxy formation theories, due to many exciting new discoveries in the past decade. However, it is difficult to put results in a proper cosmological context, because our knowledge of the mass M of the Local Group remains uncertain by a factor 4. In units of 10^{12} solar masses, a spherical infall model for the zero-velocity surface gives M~1.3; the sum of estimates for the Milky Way and M31 masses gives M~2.6; and the Local Group Timing argument for the M31 orbit gives M~5.6. It is possible to discriminate between the proposed masses by calculating the orbits of galaxies at the edge of the Local Group, which requires knowledge of transverse velocity components. We therefore propose to use ACS/WFC to determine the proper motions of the 4 dwarf galaxies near the edge of the Local Group (Cetus, Leo A, Tucana, Sag DIG) for which deep first epoch data (with 5-7 year time baselines) already exist in the HST Archive. Our team has extensive expertise with HST astrometric science, and our past/ongoing work for, e.g., Omega Cen, LMC/SMC and M31 show that the necessary astrometric accuracy is within the reach of HST's demonstrated capabilities. We have developed, tested, and published a new technique that uses compact background galaxies as astrometric reference sources, and we have already reduced the first epoch data. The final predicted transverse velocity accuracy, 36 km/s when averaged over the sample, will be sufficient to discriminate between each of the proposed Local Group masses at 2-sigma significance (4-sigma between the most extreme values). Our project will yield the most accurate Local Group mass determination to date, and only HST can achieve the required accuracy. ------------------------------------------------------------------------------------ Observations Description ------------------------ To measure absolute proper motions of the four target galaxies Cetus, Leo A, Tucana, and Sag DIG dwarf galaxies, we will use compact background galaxies in the field view as stationary reference sources. We will measure the average motion of stars in each Local Group galaxy between epochs 1 and 2 with respect to these reference sources. Our analysis techniques and expected accuracies are described in the Phase I proposal. First epoch ACS data are available in the archive from previous observing programs. The present project will obtain the second epoch data. 12273( 3) - 16-Aug-2010 16:00:14 - [ 2] The first epoch ACS data were obtained in at least two filters to make deep color magnitude diagrams for the target galaxies. The available broad-band colors and depth are sufficient for separating stars, foreground stars, and background galaxies to first order. For the second epoch it is therefore sufficient to take data in only one of the filters. For Cetus, Leo A, and Tucana dwarfs, we will use the first epoch data to build templates for background galaxies. For SAGDIG, however, our analysis shows that the first epoch data are neither deep nor well-dithered enough to build high signal-to-noise and high resolution templates for the background galaxies. We will therefore use our deeper second epoch F814W data for building the templates for SAGDIG. We will observe each target galaxy with the F814W filter using the same pointing and orientation used for the first epoch data. Individual exposures will be sub-pixel dithered and will last half an orbit. We will use customized dither patterns designed by Jay Anderson (STScI) to maximize the pixel phase coverage. We require that all of our images be obtained in 30-60 day windows so that they can be treated as single epoch data for astrometric analyses. During our second epoch observations, the WFC3/UVIS camera will be pointed ~6 arcmin away in the outer halo of each dwarf galaxy. We will observe those fields with F475W and F814W filters to construct color-magnitude diagrams of the outer halos. These will be used to determine stellar population gradients and the stellar halo density profile to constrain formation and evolutionary scenarios. Real Time Justification ----------------------- N/A Calibration Justification ------------------------- N/A Additional Comments ------------------- N/A ------------------------------------------------------------------------------------ 12273( 3) - 16-Aug-2010 16:00:14 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CETUS-DWARF GALAXY, DWARF RA=00H26M9.7000S +/- 0.1", J2000 V = 14.4 +/- 0.2 SPHEROIDAL DEC=-11D04'35.00" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 LEO-A-DWARF GALAXY, STAR FORMING RA=09H59M23.8000S +/- 0.1", J2000 V = 12.5 +/- 0.2 REGION DEC=+30D45'23.80" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 3 TUCANA-DWARF GALAXY, DWARF RA=22H41M48.4200S +/- 0.1", J2000 V = 15.2 +/- 0.2 SPHEROIDAL DEC=-64D25'16.05" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 4 SAGITTARIUS- GALAXY, DWARF RA=19H30M0.0700S +/- 0.1", J2000 V = 14.3 +/- 0.2 DWARF-IRREGU SPHEROIDAL DEC=-17D40'46.42" +/- 0.1" LAR Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the NED database. ------------------------------------------------------------------------------------------------------------------------------------ 12273( 3) - 16-Aug-2010 16:00:14 - [ 4] Visit: 01 Visit Requirements: ORIENT 266.014664D TO 266.014664 D; GROUP 01, 02 WITHIN 30D On Hold Comments: Additional Comments: This is the first visit for imaging the Cetus Dwarf Galaxy. Two orbits are required to complete this visit. Since our goal is to measure proper motions of stars in the target galaxy, our orientation is set to exactly match the previous observations of PID 10505. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POST-ARG special requirements. For each visit we will do a set of 4-point dithering. We require that Visits 01 and 02 be observed in a 30 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1267 S POS TARG 0.0000, 0.0000; SEQ 1-4 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 CETUS-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1327 S S ------------------------------------------------------------------------------------------------------------------------------------ 3 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1267 S POS TARG 0.1740, 0.2350; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 CETUS-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1251 S S ------------------------------------------------------------------------------------------------------------------------------------ 5 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1363 S POS TARG 0.3232, 0.1235; SEQ 5-8 NON-INT; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 CETUS-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1347 S S ------------------------------------------------------------------------------------------------------------------------------------ 7 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1364 S POS TARG 0.1005, 0.3305; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 CETUS-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1354 S S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CETUS-DWARF 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A CETUS-DWARF 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A S CETUS-DWARF 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A 12273( 3) - 16-Aug-2010 16:00:14 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ CETUS-DWARF 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S CETUS-DWARF 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A CETUS-DWARF 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A S CETUS-DWARF 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A CETUS-DWARF 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A S 12273( 3) - 16-Aug-2010 16:00:14 - [ 6] Visit: 02 Visit Requirements: SAME ORIENT AS 01; GROUP 02, 01 WITHIN 30D On Hold Comments: Additional Comments: This is the second visit for imaging the Cetus Dwarf Galaxy. Two orbits are required to complete this visit. We request that the orientation be exactly the same as that of Visit 01. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 01 and 02 be observed in a 30 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1267 S POS TARG 0.5075, 0.0505; SEQ 1-4 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 CETUS-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1327 S S ------------------------------------------------------------------------------------------------------------------------------------ 3 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1267 S POS TARG 0.6815, 0.2855; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 CETUS-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1251 S S ------------------------------------------------------------------------------------------------------------------------------------ 5 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1363 S POS TARG 0.8300, 0.1735; SEQ 5-8 NON-INT; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 CETUS-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1347 S S ------------------------------------------------------------------------------------------------------------------------------------ 7 CETUS-DWARF ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1364 S POS TARG 0.6080, 0.3810; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 CETUS-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1354 S S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CETUS-DWARF 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A CETUS-DWARF 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A S CETUS-DWARF 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A 12273( 3) - 16-Aug-2010 16:00:14 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ CETUS-DWARF 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S CETUS-DWARF 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A CETUS-DWARF 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A S CETUS-DWARF 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A CETUS-DWARF 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A S 12273( 3) - 16-Aug-2010 16:00:14 - [ 8] Visit: 03 Visit Requirements: ORIENT 282.484802D TO 287.5 D; GROUP 03, 04 WITHIN 30D On Hold Comments: Additional Comments: This is the first visit for imaging the Leo A Dwarf Galaxy. Two orbits are required to complete this visit. Since our goal is to measure proper motions of stars in the target galaxy, our orientation is set to exactly match the previous observations of PID 10590. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 03 and 04 be observed in a 30 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1282 S POS TARG 0.0000, 0.0000; SEQ 1-4 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 LEO-A-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1342 S S ------------------------------------------------------------------------------------------------------------------------------------ 3 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1282 S POS TARG 0.1740, 0.2350; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 LEO-A-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1272 S S ------------------------------------------------------------------------------------------------------------------------------------ 5 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1378 S POS TARG 0.3232, 0.1235; SEQ 5-8 NON-INT; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 LEO-A-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1362 S S ------------------------------------------------------------------------------------------------------------------------------------ 7 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1379 S POS TARG 0.1005, 0.3305; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 LEO-A-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1369 S S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ LEO-A-DWARF 1 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A LEO-A-DWARF 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A S LEO-A-DWARF 3 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A 12273( 3) - 16-Aug-2010 16:00:14 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ LEO-A-DWARF 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S LEO-A-DWARF 5 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A LEO-A-DWARF 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A S LEO-A-DWARF 7 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A LEO-A-DWARF 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A S 12273( 3) - 16-Aug-2010 16:00:14 - [ 10] Visit: 04 Visit Requirements: SAME ORIENT AS 03; GROUP 04, 03 WITHIN 30D On Hold Comments: Additional Comments: This is the second visit for imaging the Leo A Dwarf Galaxy. Two orbits are required to complete this visit. We request that the orientation be exactly the same as that of Visit 03. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 03 and 04 be observed in a 30 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1282 S POS TARG 0.5075, 0.0505; SEQ 1-4 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 LEO-A-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1342 S S ------------------------------------------------------------------------------------------------------------------------------------ 3 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1282 S POS TARG 0.6815, 0.2855; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 LEO-A-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1272 S S ------------------------------------------------------------------------------------------------------------------------------------ 5 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1378 S POS TARG 0.8300, 0.1735; SEQ 5-8 NON-INT; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 LEO-A-DWARF WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1362 S S ------------------------------------------------------------------------------------------------------------------------------------ 7 LEO-A-DWARF ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1379 S POS TARG 0.6080, 0.3810; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 LEO-A-DWARF WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1369 S S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ LEO-A-DWARF 1 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A LEO-A-DWARF 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A S LEO-A-DWARF 3 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A 12273( 3) - 16-Aug-2010 16:00:14 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ LEO-A-DWARF 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S LEO-A-DWARF 5 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A LEO-A-DWARF 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A S LEO-A-DWARF 7 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A LEO-A-DWARF 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A S 12273( 3) - 16-Aug-2010 16:00:14 - [ 12] Visit: 05 Visit Requirements: ORIENT 231.55373D TO 231.55373 D; GROUP 05, 06 WITHIN 30D On Hold Comments: Additional Comments: This is the first visit for imaging the Tucana Dwarf Galaxy. Two orbits are required to complete this visit. Since our goal is to measure proper motions of stars in the target galaxy, our orientation is set to exactly match the previous observations of PID 10505. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 05 and 06 be observed in a 30 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1402 S POS TARG 0.0000, 0.0000; F SEQ 1-4 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 TUCANA-DWAR WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1462 S F S ------------------------------------------------------------------------------------------------------------------------------------ 3 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1403 S POS TARG 0.1740, 0.2350; F PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 TUCANA-DWAR WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1393 S F S ------------------------------------------------------------------------------------------------------------------------------------ 5 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1499 S POS TARG 0.3232, 0.1235; F SEQ 5-8 NON-INT; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 TUCANA-DWAR WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1483 S F S ------------------------------------------------------------------------------------------------------------------------------------ 7 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1499 S POS TARG 0.1005, 0.3305; F PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 TUCANA-DWAR WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1489 S F S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TUCANA-DWARF 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A TUCANA-DWARF 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A S TUCANA-DWARF 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A 12273( 3) - 16-Aug-2010 16:00:14 - [ 13] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TUCANA-DWARF 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S TUCANA-DWARF 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A TUCANA-DWARF 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A S TUCANA-DWARF 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A TUCANA-DWARF 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A S 12273( 3) - 16-Aug-2010 16:00:14 - [ 14] Visit: 06 Visit Requirements: SAME ORIENT AS 05; GROUP 06, 05 WITHIN 30D On Hold Comments: Additional Comments: This is the second visit for imaging the Tucana Dwarf Galaxy. Two orbits are required to complete this visit. We request that the orientation be exactly the same as Visit 05. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 05 and 06 be observed in a 30 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1402 S POS TARG 0.5075, 0.0505; F SEQ 1-4 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 TUCANA-DWAR WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1462 S F S ------------------------------------------------------------------------------------------------------------------------------------ 3 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1403 S POS TARG 0.6815, 0.2855; F PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 TUCANA-DWAR WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1393 S F S ------------------------------------------------------------------------------------------------------------------------------------ 5 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1499 S POS TARG 0.8300, 0.1735; F SEQ 5-8 NON-INT; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 TUCANA-DWAR WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1483 S F S ------------------------------------------------------------------------------------------------------------------------------------ 7 TUCANA-DWAR ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1499 S POS TARG 0.6080, 0.3810; F PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 TUCANA-DWAR WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1489 S F S ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TUCANA-DWARF 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A TUCANA-DWARF 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A S TUCANA-DWARF 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A 12273( 3) - 16-Aug-2010 16:00:14 - [ 15] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TUCANA-DWARF 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S TUCANA-DWARF 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A TUCANA-DWARF 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A S TUCANA-DWARF 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A TUCANA-DWARF 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A S 12273( 3) - 16-Aug-2010 16:00:14 - [ 16] Visit: 07 Visit Requirements: ORIENT 87.260712D TO 87.260712 D; GROUP 07, 08, 09 WITHIN 60D On Hold Comments: Additional Comments: This is the first visit for imaging the Sagittarius Dwarf Irregular Galaxy (SAGDIG). Two orbits are required to complete this visit. Since our goal is to measure proper motions of stars in the target galaxy, our orientation is set to exactly match the previous observations of PID 9820. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 07, 08, and 09 be observed in a 60 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1269 S POS TARG 0.0000, 0.0000; -DWARF-IRRE SEQ 1-4 NON-INT; PAR 2 GULAR WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SAGITTARIUS WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1329 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 3 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1269 S POS TARG 0.1740, 0.1850; -DWARF-IRRE PAR 4 WITH 3 GULAR ------------------------------------------------------------------------------------------------------------------------------------ 4 SAGITTARIUS WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1259 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 5 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1365 S POS TARG 0.3232, 0.1235; -DWARF-IRRE SEQ 5-8 NON-INT; PAR 6 GULAR WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 SAGITTARIUS WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1349 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 7 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1366 S POS TARG 0.1005, 0.3305; -DWARF-IRRE PAR 8 WITH 7 GULAR ------------------------------------------------------------------------------------------------------------------------------------ 8 SAGITTARIUS WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1356 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 12273( 3) - 16-Aug-2010 16:00:14 - [ 17] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SAGITTARIUS-DWARF-I 1 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A RREGULAR SAGITTARIUS-DWARF-I 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A RREGULAR S SAGITTARIUS-DWARF-I 3 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A RREGULAR SAGITTARIUS-DWARF-I 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A RREGULAR S SAGITTARIUS-DWARF-I 5 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A RREGULAR SAGITTARIUS-DWARF-I 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A RREGULAR S SAGITTARIUS-DWARF-I 7 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A RREGULAR SAGITTARIUS-DWARF-I 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A RREGULAR S 12273( 3) - 16-Aug-2010 16:00:14 - [ 18] Visit: 08 Visit Requirements: SAME ORIENT AS 07; GROUP 08, 07, 09 WITHIN 60D On Hold Comments: Additional Comments: This is the second visit for imaging the Sagittarius Dwarf Irregular Galaxy (SAGDIG). Two orbits are required to complete this visit. We request that the orientation be exactly the same as that of Visit 07. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 07, 08, and 09 be observed in a 60 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1269 S POS TARG 0.5030, 0.0460; -DWARF-IRRE SEQ 1-4 NON-INT; PAR 2 GULAR WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SAGITTARIUS WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1329 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 3 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1269 S POS TARG 0.6770, 0.2310; -DWARF-IRRE PAR 4 WITH 3 GULAR ------------------------------------------------------------------------------------------------------------------------------------ 4 SAGITTARIUS WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1259 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 5 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1365 S POS TARG 0.8262, 0.1695; -DWARF-IRRE SEQ 5-8 NON-INT; PAR 6 GULAR WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 SAGITTARIUS WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1349 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 7 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1366 S POS TARG 0.6035, 0.3765; -DWARF-IRRE PAR 8 WITH 7 GULAR ------------------------------------------------------------------------------------------------------------------------------------ 8 SAGITTARIUS WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1356 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 12273( 3) - 16-Aug-2010 16:00:14 - [ 19] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SAGITTARIUS-DWARF-I 1 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A RREGULAR SAGITTARIUS-DWARF-I 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A RREGULAR S SAGITTARIUS-DWARF-I 3 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A RREGULAR SAGITTARIUS-DWARF-I 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A RREGULAR S SAGITTARIUS-DWARF-I 5 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A RREGULAR SAGITTARIUS-DWARF-I 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A RREGULAR S SAGITTARIUS-DWARF-I 7 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A RREGULAR SAGITTARIUS-DWARF-I 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A RREGULAR S 12273( 3) - 16-Aug-2010 16:00:14 - [ 20] Visit: 09 Visit Requirements: SAME ORIENT AS 07; GROUP 09, 07, 08 WITHIN 60D On Hold Comments: Additional Comments: This is the third visit for imaging the Sagittarius Dwarf Irregular Galaxy (SAGDIG). Two orbits are required to complete this visit. We request that the orientation be exactly the same as that of Visit 07. We adopt a customized dither pattern designed to optimally cover the pixel phase using the POS-TARG special requirements. For each visit we will do a set of 4-point dithering. We request that Visits 07, 08, and 09 be observed in a 60 day window so that they can be treated as single epoch data for astrometric analysis. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1269 S POS TARG 0.1180, 0.5180; -DWARF-IRRE SEQ 1-4 NON-INT; PAR 2 GULAR WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 SAGITTARIUS WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1329 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 3 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1269 S POS TARG 0.2920, 0.7030; -DWARF-IRRE PAR 4 WITH 3 GULAR ------------------------------------------------------------------------------------------------------------------------------------ 4 SAGITTARIUS WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1259 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 5 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1365 S POS TARG 0.4412, 0.6415; -DWARF-IRRE SEQ 5-8 NON-INT; PAR 6 GULAR WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 SAGITTARIUS WFC3/UVI ACCUM UVIS F475W CR-SPLIT=NO 1 1349 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 7 SAGITTARIUS ACS/WFC ACCUM WFC-FIX F814W CR-SPLIT=NO 1 1366 S POS TARG 0.2185, 0.8485; -DWARF-IRRE PAR 8 WITH 7 GULAR ------------------------------------------------------------------------------------------------------------------------------------ 8 SAGITTARIUS WFC3/UVI ACCUM UVIS F814W CR-SPLIT=NO 1 1356 S -DWARF-IRRE S GULAR ------------------------------------------------------------------------------------------------------------------------------------ 12273( 3) - 16-Aug-2010 16:00:14 - [ 21] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SAGITTARIUS-DWARF-I 1 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A RREGULAR SAGITTARIUS-DWARF-I 2 WFC3/UVI ACCUM UVIS F475W none none none none 1 N/A RREGULAR S SAGITTARIUS-DWARF-I 3 ACS/WFC ACCUM WFC-FIX F814W none none none none 1 N/A RREGULAR SAGITTARIUS-DWARF-I 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A RREGULAR S SAGITTARIUS-DWARF-I 5 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A RREGULAR SAGITTARIUS-DWARF-I 6 WFC3/UVI ACCUM UVIS F475W none none none none 2 N/A RREGULAR S SAGITTARIUS-DWARF-I 7 ACS/WFC ACCUM WFC-FIX F814W none none none none 2 N/A RREGULAR SAGITTARIUS-DWARF-I 8 WFC3/UVI ACCUM UVIS F814W none none none none 2 N/A RREGULAR S 12273( 3) - 16-Aug-2010 16:00:14 - [ 22] Summary Form for Proposal 12273 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS, WFC-FIX, WFCENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GROUP 01, 02 WITHIN 30D, GROUP 02, 01 WITHIN 30D, GROUP 03, 04 WITHIN 30D, GROUP 04, 03 WITHIN 30D, GROUP 05, 06 WITHIN 30D, GROUP 06, 05 WITHIN 30D, GROUP 07, 08, 09 WITHIN 60D, GROUP 08, 07, 09 WITHIN 60D, GROUP 09, 07, 08 WITHIN 60D, ORIENT 231.55373D TO 231.55373 D, ORIENT 266.014664D TO 266.014664 D, ORIENT 282.484802D TO 287.5 D, ORIENT 87.260712D TO 87.260712 D, PAR 2 WITH 1, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, POS TARG 0.0000, 0.0000, POS TARG 0.1005, 0.3305, POS TARG 0.1180, 0.5180, POS TARG 0.1740, 0.1850, POS TARG 0.1740, 0.2350, POS TARG 0.2185, 0.8485, POS TARG 0.2920, 0.7030, POS TARG 0.3232, 0.1235, POS TARG 0.4412, 0.6415, POS TARG 0.5030, 0.0460, POS TARG 0.5075, 0.0505, POS TARG 0.6035, 0.3765, POS TARG 0.6080, 0.3810, POS TARG 0.6770, 0.2310, POS TARG 0.6815, 0.2855, POS TARG 0.8262, 0.1695, POS TARG 0.8300, 0.1735, SAME ORIENT AS 01, SAME ORIENT AS 03, SAME ORIENT AS 05, SAME ORIENT AS 07, SEQ 1-4 NON-INT, SEQ 5-8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F475W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names CETUS-DWARF, LEO-A-DWARF, SAGITTARIUS-DWARF-IRREGULAR, TUCANA-DWARF ------------------------------------------------------------------------------------------------------------------------------------