14234( 2) - 23-Jul-2015 12:00:06 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14234 Version: 2 Check-in Time: 23-Jul-2015 12:00:06 STScI Edit Number: 1 Title The Lowest Luminosity Star-Forming Galaxy ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Joshua D. Simon Carnegie Institution of Washington Y CoI: Prof. David J. Sand Texas Tech University N CoI: Dr. Thomas M. Brown Space Telescope Science Institute N CoI: Dr. Denija Crnojevic Texas Tech University N CoI: Dr. Keith Bechtol University of Chicago N CoI: Prof. Jay Strader Michigan State University N CoI: Dr. Gisella Clementini INAF, Osservatorio Astronomico di Bologna N CoI: Dr. Alex Drlica-Wagner Fermi National Accelerator Laboratory N (FNAL) CoI: Dr. Beth Willman Haverford College N CoI: Prof. Marla C. Geha Yale University N ------------------------------------------------------------------------------------ Abstract We propose ACS/WFC imaging of the newly discovered Milky Way satellite galaxy Eridanus II. Eri II is unique among nearby dwarfs in that it appears to contain young stars but has no detected gas, and it is located just beyond the transition radius around the Milky Way inside of which star formation is rapidly quenched. With a luminosity of only 54000 Lsun, Eri II is likely the lowest luminosity star-forming galaxy yet found, surpassing Leo T. This combination of properties makes Eri II a key target for studying the mechanisms by which low-mass galaxies are quenched, and it will provide new insight into why some dwarfs are able to continue forming stars for a Hubble time while other seemingly similar objects are not. We will use a deep HST color-magnitude diagram to derive the star formation history of the galaxy, confirming the existence of its young population, measuring the age of its oldest stars, and determining whether its star formation has been continuous or episodic. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program will obtain straightforward deep imaging with one ACS tile on the galaxy and one parallel WFC3 tile just outside the galaxy. The individual exposures will be dithered to resample the PSF, reduce detector artifacts, and dither the gap. The 4 2-orbit F814W visits each contain a 2x2 resampling of the PSF, with each visit stepping by 40% of the detector gap in ACS. The 2 2-orbit F606W visits each contain a 2x2 resampling of the PSF, with each visit offset stepping by 120% of the detector gap in ACS. A 5th 1-orbit F606W visit obtains the 1st and 3rd steps in the PSF resampling, and falls between the two larger offsets of the detector gap. 14234( 2) - 23-Jul-2015 12:00:06 - [ 2] All visits should execute at the same orient to maximize the field coverage obtained at the greatest depth. ------------------------------------------------------------------------------------ 14234( 2) - 23-Jul-2015 12:00:06 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 6 ERIDANUS-II GALAXY, DWARF RA=03H44M21.6000S +/- 0.1", J2000 V = 16 +/- 0.2 SPHEROIDAL DEC=-43D31'48.00" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14234( 2) - 23-Jul-2015 12:00:06 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: 4-point dither for PSF combined with larger dither by -0.6 gap Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1270 S POS TARG -0.405080, (1270 S) -1.51480; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1220 S POS TARG 0.0148200, (1220 S) -1.48080; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1390 S POS TARG -0.0345800, (1390 S) -1.26250; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1290 S POS TARG -0.207480, (1290 S) -1.32590; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 6 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER ERIDANUS-II 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 5] Visit: 02 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: 4-point dither for PSF combined with larger dither by -0.6 gap Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1270 S POS TARG -0.405080, (1270 S) -1.51480; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1220 S POS TARG 0.0148200, (1220 S) -1.48080; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1390 S POS TARG -0.0345800, (1390 S) -1.26250; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1420 S S ER (1420 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1290 S POS TARG -0.207480, (1290 S) -1.32590; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1420 S S ER (1420 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 1 N/A S TER ERIDANUS-II 5 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A ANY 6 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 2 N/A S TER ERIDANUS-II 7 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 2 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 6] Visit: 03 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: 4-point dither for PSF combined with larger dither by -0.2 gap Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1270 S POS TARG -0.266760, (1270 S) -0.515600; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1220 S POS TARG 0.153140, (1220 S) -0.481600; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1390 S POS TARG 0.103740, (1390 S) -0.263300; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1290 S POS TARG -0.0691600, (1290 S) -0.326700; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 6 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER ERIDANUS-II 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 7] Visit: 04 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: 4-point dither for PSF combined with larger dither by +0.6 gap Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1270 S POS TARG 0.00988001, (1270 S) 1.48280; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1220 S POS TARG 0.429780, (1220 S) 1.51680; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1390 S POS TARG 0.380380, (1390 S) 1.73510; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1420 S S ER (1420 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1290 S POS TARG 0.207480, (1290 S) 1.67170; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1420 S S ER (1420 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 1 N/A S TER ERIDANUS-II 5 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A ANY 6 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 2 N/A S TER ERIDANUS-II 7 ACS/WFC ACCUM WFCENTER F606W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 2 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 8] Visit: 05 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: 4-point dither for PSF combined with larger dither by +0.2 gap Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1270 S POS TARG -0.128440, (1270 S) 0.483600; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1220 S POS TARG 0.291460, (1220 S) 0.517600; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1390 S POS TARG 0.242060, (1390 S) 0.735900; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1290 S POS TARG 0.0691600, (1290 S) 0.672500; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 6 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER ERIDANUS-II 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 9] Visit: 06 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: Ony 2 points in the 4-point dither pattern, at gap offset = 0 (between the other two F606W visits) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1270 S POS TARG -0.197600, (1270 S) -0.0160000; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO 1 1220 S POS TARG 0.172900, (1220 S) 0.236300; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F606W CR-SPLIT=NO 1 1350 S S ER (1350 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F606W none none none none 1 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 10] Visit: 07 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: 4-point dither for PSF combined with larger dither by +0.6 gap Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1270 S POS TARG 0.00988001, (1270 S) 1.48280; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1220 S POS TARG 0.429780, (1220 S) 1.51680; PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1350 S S ER (1350 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1390 S POS TARG 0.380380, (1390 S) 1.73510; PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-II ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO 1 1290 S POS TARG 0.207480, (1290 S) 1.67170; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS-CENT F814W CR-SPLIT=NO 1 1420 S S ER (1420 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-II 1 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 3 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 1 N/A S TER ERIDANUS-II 5 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 6 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER ERIDANUS-II 7 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER 14234( 2) - 23-Jul-2015 12:00:06 - [ 11] Summary Form for Proposal 14234 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER, WFCENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PAR 2 WITH 1, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, POS TARG -0.0345800, -1.26250, POS TARG -0.0691600, -0.326700, POS TARG -0.128440, 0.483600, POS TARG -0.197600, -0.0160000, POS TARG -0.207480, -1.32590, POS TARG -0.266760, -0.515600, POS TARG -0.405080, -1.51480, POS TARG 0.00988001, 1.48280, POS TARG 0.0148200, -1.48080, POS TARG 0.0691600, 0.672500, POS TARG 0.103740, -0.263300, POS TARG 0.153140, -0.481600, POS TARG 0.172900, 0.236300, POS TARG 0.207480, 1.67170, POS TARG 0.242060, 0.735900, POS TARG 0.291460, 0.517600, POS TARG 0.380380, 1.73510, POS TARG 0.429780, 1.51680, SAME ORIENT AS 01 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ANY, ERIDANUS-II ------------------------------------------------------------------------------------------------------------------------------------