Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5094 Report Date: 18-Jul-95:16:57 Version: ********** Check-in Date: ********** 1.Proposal Title: COMPOSITION OF GAS IN INDIVIDUAL INTERSTELLAR CLOUDS: CYCLE 4 OBSERVATIONS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID INTERSTELLAR MEDIUM GO/DD 1071 Sub Category ABSORPTION LINES ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Prof. Lyman Spitzer PRINCETON UNIVERSITY USA (609) 258-3809 PROFESSOR EMERITUS ------------------------------------------------------------------------------------ 7. Abstract Column densities of interstellar atoms of 17 atomic species of 10 elements will be measured in the line-of-sight to 1 early-type star in the galactic disk using the Goddard High Resolution Spectrograph to obtain precise measures in the ultraviolet with the highest available spectral resolution. These data will be analyzed to determine relative abundances in the several individual clouds present along each line of sight, and thus to determine how the composition of the gas in such clouds and the various physical processes occurring vary with cloud parameters such as H column density, velocity, ionization level, and distance z from the galactic plane. This information should help to clarify the many physical processes occurring in interstellar gas. The program should also increase our understanding of the balance between formation and destruction of interstellar dust grains. ------------------------------------------------------------------------------------ 8. Scientific Key Words: INTERSTELLAR LINES ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 3.72 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5094 PI: Prof. Lyman Spitzer Proposal Title: COMPOSITION OF GAS IN INDIVIDUAL INTERSTELLAR CLOUDS: CYCLE 4 OBSERVATIONS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Prof. Lyman Spitzer PRINCETON UNIVERSITY USA Prof. C. R. O'Dell RICE UNIVERSITY USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. The observations planned during Cycle 4, and supported with GO/DD time, will in general follow the pattern set for our ongoing GTO program, ID 1071. A series of interstellar absorption lines longward of 1800 A will be observed with Echelle B of the GHRS, giving the highest resolution available (resolving power R about 85,000) for lines of S I, Si II, Mg I, Fe II, Co II, Cr II, Zn II, and Mn II. For photometric accuracy, the FP-SPLIT mode is used to give four adjacent exposures of each line. Another series of lines at shorter wavelengths, between 1120 and 1600 A, will be observed with the GHRS grating G160M, again using the FP -SPLIT routine to obtain four adjacent subexposures. These shorter wavelength observations will be performed using Echelle A if the GHRS Side 1 becomes available during Cycle 4. Of the many interstellar lines in this region the following species are of particular interest: C I, C II, CIV, N I, N V, O I, Mg II, S II, S III, Si II, Si III, Si IV, P II, PIII, Fe II, and Mn II. While the resolving power with the G160M grating is in the range from about 15,000 to 24,000, deconvolution of each spectrum may almost double the effective R. For accurate wavelength calibration, exposures of the calibration lamp spectrum will be taken at the beginning and end of each series. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Much pioneering work on individual interstellar clouds has been done from the ground. However, to obtain data on many elements, including the highly ionized species, requires observations from above the atmosphere. The Copernicus satellite made important contributions to this topic, but its resolving power of 20,000 was insufficient to resolve clearly many of the individual components in most lines of sight, although in favorable cases properties of individual clouds were successfully deduced. The IUE satellite has been enormously useful for broad surveys of interstellar absorption, especially for the fainter stars which could not be observed with Copernicus, but its resolving power of 10,000 is inadequate for resolving most components. The HST, with its resolving power of 85,000 for lines observed with Echelle B, can answer detailed questions on the physical properties of individual clouds towards many stars. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. There are no Realtime Data or Special Scheduling Requests required. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. There are no Special Calibrations required. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. No additional comments or requests. Page 3 ------------------------------------------------------------------------------------ 9. Description of previous HST work. PREVIOUS HST PROGRAMS: GTO 1071, 3215, and AUG 3444 "Composition of Gas in Individual Interstellar Clouds". These identification numbers, for observations in Cycles 0, 1, and 2, designate the ongoing project for which the present proposal represents Director's Discretionary time. MAIN RESULTS OBTAINED FROM PREVIOUS RELATED PROGRAMS: Two stars, HD 68273 (Gamma-2 Velorum) and HD 93521, were observed for the program GTO 1071 during Cycle 0. Analysis of these data has yielded a new strategy for removing the effects of scattered light from GHRS echelle data and a very effective technique for correcting for fixed pattern noise in the data, an effect important for the brighter stars, for which S/N can be about 100 or more. In the halo star HD93521, 1500 pc from the galactic plane, the observed widths of the C IV and Si IV absorption features are 50 km/sec (FWHM), as compared with 7 km/sec for a narrow S II component. Measures of the low-ionization lines (such as S II, Si II, Fe II) have given detailed information on the depletion of elements from the gas as a result of condensation on solid grains, and suggest that iron orthosilicate is a primary constituent of these grains. The temperature and density of the interstellar gas have also been determined. PUBLICATIONS RESULTING FROM THE ABOVE DATA: A brief description of these data and of their technical aspects has appeared in the STScI Newsletter, June 1991 (Vol. 8, No. 2). The observed profiles of the C IV and Si IV features in HD93521 are presented in Ap.J. Letters (May 10, 1992), and their possible interpretation discussed. A full discussion of the HD 93521 results appears in the Ap.J. (May 20, 1993). ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). The participation of L. Spitzer, now Senior Research Astronomer at Princeton University, is without charge to the Project; he expects to devote nearly all his research time to this work. The chief annual cost to the Project is the full- time salary of E.L. Fitzpatrick, now Research Astronomer with continuing appointment. The Department of Astrophysical Sciences contributed funds toward his salary during several years before full NASA funding (by subcontract with O'Dell's home institution, the Rice University of Technology) became available. Computer peripherals, including tape drives and a laser printer, are available at the Department for a small monthly charge. ------------------------------------------------------------------------------------ 11. Address Information Name: LYMAN SPITZER Category: PI Institution: PRINCETON UNIV. OBSERVATORY Address: PEYTON HALL City: PRINCETON State: NJ Zip Code: 08544 Country: USA Telephone: 609-258-3809 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: C. R. O'DELL Category: Institution: RICE UNIVERSITY Address: DEPT. OF SPACE PHYSICS & ASTRONOMY P.O. BOX 1892 City: HOUSTON State: TX Zip Code: 77251 Country: USA Telephone: 713-527-8101 X3633 Telex (or e-mail): 556457 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5094 [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial |Acqui|FLX| Flux data No | Name | Description | Position |Eqnx | Vel. |Prblm|REF| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 20 HD143118 ETA A,110,G,508,912 RA=15H56M48.04S +/- .1S, 1950 COMP 1 V=3.42,E(B-V)=-.01 -LUP-A DEC=-38D15'20.2" +/- 1.0" 2 F-CONT(1300)=6.2+/-0.6E-9 Comments: SPECTRAL TYPE B2.5IV ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5094 [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DEFINE # HRS ACCUM 0.25 G160M 1150.0 STEP-PATT=DEF 2 308S # 2 # SEQ 1-7 NO GAP GR-4 COMB=TWO FP-SPLIT=DSFOUR Comments: EXPOSURE TIME IN LINE 1 YIELDS S/N =43 PER 3 KM/S BIN PER SUBEXPOSURE FOR A STANDARD STAR WITH F-CONT(1300) =1.0E-8 USING MEASURED HST SENSITIVITY ------------------------------------------------------------------------------------------------------------------------------------ 2 DEFINE # HRS ACCUM 0.25 G160M 1195.0 STEP-PATT=DEF 1 287S # 2 # GR-4 COMB=TWO FP-SPLIT=DSFOUR Comments: EXPOSURE TIMES IN LINES 2-7 YIELD S/N =87 PER 3 KM/S BIN PER SUBEXPOSURE FOR A STANDARD STAR WITH F-CONT(1300) =1.0E-8 USING MEASURED HST SENSITIVITY ------------------------------------------------------------------------------------------------------------------------------------ 3 DEFINE # HRS ACCUM 0.25 G160M 1252.0 STEP-PATT=DEF 1 134S # 2 # GR-4 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 4 DEFINE # HRS ACCUM 0.25 G160M 1315.6 STEP-PATT=DEF 1 107S # 2 # GR-4 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 5 DEFINE # HRS ACCUM 0.25 G160M 1347.0 STEP-PATT=DEF 1 129S # 2 # GR-4 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 6 DEFINE # HRS ACCUM 0.25 G160M 1392.0 STEP-PATT=DEF 1 164S # 2 # GR-4 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 7 DEFINE # HRS ACCUM 0.25 G160M 1560.0 STEP-PATT=DEF 1 233S # 2 # GR-4 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 8 DEFINE # HRS ACCUM 0.25 ECH-A 1192.35 STEP-PATT=DEF 1 365S # 2 # SEQ 8-15 NO GAP EC-A5 COMB=TWO FP-SPLIT=DSFOUR Comments: EXPOSURE TIMES IN LINES 8-15 YIELD S/N =87 PER 3 KM/S BIN PER SUBEXPOSURE FOR A STANDARD STAR WITH F-CONT(1300) =1.0E-8 USING MEASURED HST SENSITIVITY ------------------------------------------------------------------------------------------------------------------------------------ 9 DEFINE # HRS ACCUM 0.25 ECH-A 1240.80 STEP-PATT=DEF 1 240S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5094 [ 6] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 DEFINE # HRS ACCUM 0.25 ECH-A 1252.20 STEP-PATT=DEF 1 189S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 11 DEFINE # HRS ACCUM 0.25 ECH-A 1304.20 STEP-PATT=DEF 1 150S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 12 DEFINE # HRS ACCUM 0.25 ECH-A 1335.20 STEP-PATT=DEF 1 153S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 13 DEFINE # HRS ACCUM 0.25 ECH-A 1392.50 STEP-PATT=DEF 1 231S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 14 DEFINE # HRS ACCUM 0.25 ECH-A 1549.5 STEP-PATT=DEF 1 495S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 15 DEFINE # HRS ACCUM 0.25 ECH-A 1561.00 STEP-PATT=DEF 1 435S # 2 # EC-A5 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 16 DEFINE # HRS ACCUM 0.25 ECH-B 1806.00 STEP-PATT=DEF 1 186S # 2 # SEQ 16-22 NO GAP EC-B4 COMB=TWO FP-SPLIT=DSFOUR Comments: EXPOSURE TIMES IN LINES 16-22 GIVE S/N =87 PER 3 KM/S BIN PER SUBEXPOSURE FOR A STANDARD STAR WITH F-CONT(1300) =1.0E-8 USING MEASURED HST SENSITIVITY ------------------------------------------------------------------------------------------------------------------------------------ 17 DEFINE # HRS ACCUM 0.25 ECH-B 1827.00 STEP-PATT=DEF 1 186S # 2 # EC-B4 COMB=TWO FP-SPLIT=DSFOUR ------------------------------------------------------------------------------------------------------------------------------------ 18 DEFINE # HRS ACCUM 0.25 ECH-B 2025.65 STEP-PATT=DEF 1 81S # 2 # EC-B4 COMB=TWO FP-SPLIT=DSFOUR Comments: VACUUM WAVELENGTHS USED IN LINE 18. ------------------------------------------------------------------------------------------------------------------------------------ 19 DEFINE # HRS ACCUM 0.25 ECH-B 2059.50 STEP-PATT=DEF 1 90S # 2 # EC-B4 COMB=TWO FP-SPLIT=DSFOUR Comments: VACUUM WAVELENGTHS USED IN LINE 19. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5094 [ 7] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 20 DEFINE # HRS ACCUM 0.25 ECH-B 2260.80 STEP-PATT=DEF 1 45S # 2 # EC-B4 COMB=TWO FP-SPLIT=DSFOUR Comments: VACUUM WAVELENGTHS USED IN LINE 20. ------------------------------------------------------------------------------------------------------------------------------------ 21 DEFINE # HRS ACCUM 0.25 ECH-B 2372.03 STEP-PATT=DEF 1 66S # 2 # EC-B4 COMB=TWO FP-SPLIT=DSFOUR Comments: VACUUM WAVELENGTHS USED IN LINE 21. ------------------------------------------------------------------------------------------------------------------------------------ 22 DEFINE # HRS ACCUM 0.25 ECH-B 2603.88 STEP-PATT=DEF 1 105S # 2 # EC-B4 COMB=TWO FP-SPLIT=DSFOUR Comments: VACUUM WAVELENGTHS USED IN LINE 22. ------------------------------------------------------------------------------------------------------------------------------------ 401 HD143118 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 1.8S 1 ONBOARD ACQ FOR SEARCH-SIZE=3 402 LOCATE=YES CYCLE 4 / 401-428 SELECT 1 OF 401- 408 OR 421-428 COND IF ECH-A Comments: IF ECHELLE A IS AVAILABLE WE AVAILABLE /401-408 PREFER USING LINES 401-408. ------------------------------------------------------------------------------------------------------------------------------------ 402 HD143118 HRS ACQ/ 0.25 MIRROR-A2 SEARCH-SIZE=5 1 25S 1 ONBOARD ACQ FOR PEAKUP 403-405 ------------------------------------------------------------------------------------------------------------------------------------ 403 WAVE HRS ACCUM SC2 ECH-A 1192.35 STEP-PATT=DEF 1 14S 1 SEQ 403-405 NO GAP COMB=TWO CALIB FOR 404 ------------------------------------------------------------------------------------------------------------------------------------ 404 USE EC- HD143118 X1.61 87 1 A5 Comments: THE MULTIPLICATIVE FACTOR 1.61 FOR ALL EC-A5 EXPOSURES FOR THIS STAR HAS BEEN CALCULATED TO GIVE S/N=87 PER 3 KM/S BIN PER SUBEXPOSURE USING THE HRS SENSITIVITY AS MEASURED IN CYCLE 0. ------------------------------------------------------------------------------------------------------------------------------------ 405 WAVE HRS ACCUM SC2 ECH-A 1561.00 STEP-PATT=DEF 1 14S 1 CALIB FOR 404 COMB=TWO ------------------------------------------------------------------------------------------------------------------------------------ 405.1 HD143118 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 1.8S 1 ONBOARD ACQ FOR SEARCH-SIZE=3 405.2 LOCATE=YES ------------------------------------------------------------------------------------------------------------------------------------ 405.2 HD143118 HRS ACQ/ 0.25 MIRROR-A2 SEARCH-SIZE=5 1 25S 1 ONBOARD ACQ FOR PEAKUP 406-408 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5094 [ 8] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 406 WAVE HRS ACCUM SC2 ECH-B 1806.00 STEP-PATT=DEF 1 14S 1 SEQ 406-408 NO GAP COMB=TWO CALIB FOR 407 ------------------------------------------------------------------------------------------------------------------------------------ 407 USE EC- HD143118 X1.61 87 1 B4 Comments: THE MULTIPLICATIVE FACTOR 1.61 FOR ALL EC-B4 EXPOSURES FOR THIS STAR HAS BEEN CALCULATED TO GIVE S/N=87 PER 3 KM/S BIN PER SUBEXPOSURE USING THE HRS SENSITIVITY AS MEASURED IN CYCLE 0. ------------------------------------------------------------------------------------------------------------------------------------ 408 WAVE HRS ACCUM SC2 ECH-B 2603.88 STEP-PATT=DEF 1 14S 1 CALIB FOR 407 COMB=TWO ------------------------------------------------------------------------------------------------------------------------------------ 421 HD143118 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 1.8S 1 ONBOARD SEARCH-SIZE=3 ACQUISITION FOR LOCATE=YES 422 COND IF ECH-A UNAVAILABLE /421- 428 Comments: IF ECHELLE A IS NOT AVAILABLE WE PREFER LINES 421-428. ------------------------------------------------------------------------------------------------------------------------------------ 422 HD143118 HRS ACQ/ 0.25 MIRROR-A2 SEARCH-SIZE=5 1 25S 1 ONBOARD PEAKUP ACQUISITION FOR 423-425 ------------------------------------------------------------------------------------------------------------------------------------ 423 WAVE HRS ACCUM SC2 G160M 1150.0 STEP-PATT=DEF 1 60S 1 SEQ 423-425 NO GAP COMB=TWO CALIB FOR 424 ------------------------------------------------------------------------------------------------------------------------------------ 424 USE GR- HD143118 X1.61 87 1 4 Comments: THE MULTIPLICATIVE FACTOR 1.61 FOR ALL GR-4 EXPOSURES FOR THIS STAR HAS BEEN CALCULATED TO GIVE S/N=87 PER 3 KM/S BIN PER SUBEXPOSURE FOR MOST SPECTRAL FEATURES, USING THE HRS SENSITIVITY AS MEASURED IN CYCLE 0. ------------------------------------------------------------------------------------------------------------------------------------ 425 WAVE HRS ACCUM SC2 G160M 1560.0 STEP-PATT=DEF 1 60S 1 CALIB FOR 424 COMB=TWO ------------------------------------------------------------------------------------------------------------------------------------ 425.1 HD143118 HRS ACQ 2.0 MIRROR-A2 BRIGHT=RETURN 1 1.8S 1 ONBOARD ACQ FOR SEARCH-SIZE=3 425.2 LOCATE=YES ------------------------------------------------------------------------------------------------------------------------------------ 425.2 HD143118 HRS ACQ/ 0.25 MIRROR-A2 SEARCH-SIZE=5 1 25S 1 ONBOARD ACQ FOR PEAKUP 426-428 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5094 [ 9] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 426 WAVE HRS ACCUM SC2 ECH-B 1806.0 STEP-PATT=DEF 1 14S 1 SEQ 426-428 NO GAP COMB=TWO CALIB FOR 427 ------------------------------------------------------------------------------------------------------------------------------------ 427 USE EC- HD143118 X1.61 87 1 B4 Comments: THE MULTIPLICATIVE FACTOR 1.61 FOR ALL EC-B4 EXPOSURES FOR THIS STAR HAS BEEN CALCULATED TO GIVE S/N=87 PER 3 KM/S BIN PER SUBEXPOSURE USING THE HRS SENSITIVITY AS MEASURED IN CYCLE 0. ------------------------------------------------------------------------------------------------------------------------------------ 428 WAVE HRS ACCUM SC2 ECH-B 2603.88 STEP-PATT=DEF 1 14S 1 CALIB FOR 427 COMB=TWO ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5094 [ 10] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ACQ ACQ/PEAKUP ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters STEP-PATT=DEF COMB=TWO FP-SPLIT=DSFOUR BRIGHT=RETURN SEARCH-SIZE=3 LOCATE=YES SEARCH-SIZE=5 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO/DD ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 3.72 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category INTERSTELLAR MEDIUM ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ABSORPTION LINES ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 1-7 NO GAP SEQ 8-15 NO GAP SEQ 16-22 NO GAP ONBOARD ACQ FOR 402; CYCLE 4 / 401-428; SELECT 1 OF 401-408 OR 421-428; COND IF ECH-A AVAILABLE /401-408 ONBOARD ACQ FOR 403-405 SEQ 403-405 NO GAP; CALIB FOR 404 ONBOARD ACQ FOR 405.2; ONBOARD ACQ FOR 406-408 SEQ 406-408 NO GAP; CALIB FOR 407 ONBOARD ACQUISITION FOR 422; COND IF ECH-A UNAVAILABLE /421-428 ONBOARD ACQUISITION FOR 423-425 SEQ 423-425 NO GAP; CALIB FOR 424 ONBOARD ACQ FOR 425.2 ONBOARD ACQ FOR 426-428 SEQ 426-428 NO GAP; CALIB FOR 427 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G160M ECH-A ECH-B MIRROR-A2 ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD143118 ETA-LUP-A ------------------------------------------------------------------------------------------------------------------------------------