12976( 4) - 06-Dec-2012 18:30:09 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12976 Version: 4 Check-in Time: 06-Dec-2012 18:30:09 STScI Edit Number: 0 Title The Most Complete Template for r-process Nucleosynthesis beyond the Solar System ------------------------------------------------------------------------------------ Type Cycle GO 20 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Ian U. Roederer Carnegie Institution of Washington Y CoI: Prof. James E. Lawler University of Wisconsin - Madison N CoI: Dr. Timothy C. Beers National Optical Astronomy Observatory, N AURA CoI: Prof. John Cowan University of Oklahoma Norman Campus N CoI: Dr. Anna Frebel Massachusetts Institute of Technology N CoI: Prof. Inese I. Ivans University of Utah N CoI: Prof. Hendrik Schatz Michigan State University N CoI: Prof. Christopher Sneden University of Texas at Austin N CoI: Dr. Jennifer S. Sobeck University of Chicago N ------------------------------------------------------------------------------------ Abstract We propose to observe two metal-poor stars that present a unique opportunity to expand the chemical inventory to unprecedented levels in an environment beyond the solar system. The proposed observations will allow us to detect several key elements, including arsenic (As, Z=33) and selenium (Se, Z=34), that cannot be detected from the ground. These elements are key to understanding the nature of the r-process in the first generations of stars that drive chemical evolution of the Galaxy, yet their abundance in the one star where they have been detected is not fully explained by current models. We will use STIS to obtain high-resolution UV spectra from 1900 to 2380 Angstroms in two metal-poor stars enriched with modest but differing amounts of r-process material, HD 108317 and HD 128279. We will perform an abundance analysis and derive abundances or meaningful upper limits for the heavy elements Cu, Zn, Ge, As, Se, Zr, Mo, Cd, Te, Yb, Os, Ir, Pt, and Pb. This work is supported by recent laboratory experiments and theoretical studies that continue to provide data of wider interest to the atomic, nuclear, and astrophysics communities. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will use STIS to observe a 2 metal-poor stars that have been enriched by small amounts of r-process material to study elements rarely detected in late-type stellar atmospheres. The goal of these observations is to acquire as many photons as possible from 1900 to 2300A at R~30, 000 for each star. There are no time constraints on the observations. Real Time Justification ----------------------- Calibration Justification ------------------------- 12976( 4) - 06-Dec-2012 18:30:09 - [ 2] Additional Comments ------------------- ------------------------------------------------------------------------------------ 12976( 4) - 06-Dec-2012 18:30:09 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD108317 STAR, G III-I, RA=12H26M36.8300S +/- 0.1", J2000 V = +6.0 V = 8.03 +/- 0.02 (B-V)=0.60+/-0.05, POPULATION II DEC=+05D18'9.03" +/- 0.1" E(B-V)=0.02+/-0.02, TYPE=G5III Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.011140340043305537 -0.024489999999999998 0.0057 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD128279 STAR, G III-I, RA=14H36M48.5110S +/- 0.1", J2000 V = V = 7.97 +/- 0.05 (B-V)=0.60+/-0.05, POPULATION II DEC=-29D06'46.65" +/- 0.1" -76.0 E(B-V)=0.10+/-0.05, TYPE=G5III Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.004739436623241939 -0.3426 0.0061 ------------------------------------------------------------------------------------------------------------------------------------ 12976( 4) - 06-Dec-2012 18:30:09 - [ 4] Visit: 01 Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD108317 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD108317 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD108317 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD108317 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD108317 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1625.0 S -MAMA HD108317 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 2763.0 S -MAMA HD108317 5 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2763.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 5] Visit: 02 Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD108317 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD108317 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD108317 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD108317 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD108317 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1625.0 S -MAMA HD108317 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 2763.0 S -MAMA HD108317 5 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2763.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 6] Visit: 03 Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD108317 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD108317 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD108317 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD108317 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD108317 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1625.0 S -MAMA HD108317 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 2763.0 S -MAMA HD108317 5 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2763.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 7] Visit: 04 Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD108317 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD108317 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD108317 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3000 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD108317 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD108317 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD108317 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1625.0 S -MAMA HD108317 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 2763.0 S -MAMA HD108317 5 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2763.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 8] Visit: 05 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD128279 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD128279 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 1900 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD128279 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 6 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 7 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 8 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD128279 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD128279 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD128279 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1863.0 S -MAMA HD128279 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 3001.0 S -MAMA HD128279 5 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 3 N/A K ND HD128279 6 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2082.0 S -MAMA HD128279 7 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 4 3001.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD128279 8 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 5 3001.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 10] Visit: 06 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD128279 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD128279 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 1900 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD128279 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 6 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 7 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 8 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD128279 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD128279 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD128279 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1863.0 S -MAMA HD128279 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 3001.0 S -MAMA HD128279 5 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 3 N/A K ND HD128279 6 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2082.0 S -MAMA HD128279 7 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 4 3001.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD128279 8 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 5 3001.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 12] Visit: 07 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 HD128279 STIS/CCD ACQ F25ND3 MIRROR 1 1 S ------------------------------------------------------------------------------------------------------------------------------------ 2 HD128279 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 3 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 1900 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HD128279 STIS/CCD ACQ/PEA 0.2X0.05N MIRROR 1 1 S K D ------------------------------------------------------------------------------------------------------------------------------------ 6 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 2100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 7 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ 8 HD128279 STIS/NUV ACCUM 0.2X0.06 E230M 1978 1 3100 S -MAMA see below ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ HD128279 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD128279 2 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 1 N/A K ND HD128279 3 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 1 1863.0 S -MAMA HD128279 4 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 2 3001.0 S -MAMA HD128279 5 STIS/CCD ACQ/PEA 0.2X0.05 MIRROR none none none none 3 N/A K ND HD128279 6 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 3 2082.0 S -MAMA HD128279 7 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 4 3001.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD128279 8 STIS/NUV ACCUM 0.2X0.06 E230M 1978 none none none none 5 3001.0 S -MAMA 12976( 4) - 06-Dec-2012 18:30:09 - [ 14] Summary Form for Proposal 12976 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.2X0.05ND, 0.2X0.06, F25ND3 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E230M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD108317, HD128279 ------------------------------------------------------------------------------------------------------------------------------------