Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5492 Report Date: 18-Jul-95:17:31 Version: ********** Check-in Date: ********** 1.Proposal Title: DETECTION OF THE INTERGALACTIC MEDIUM USING GUNN-PETERSON HEII304A ABSORPTION IN QSOS, AND FAR UV SPECTRA (CYCLE 4, HIGH, GO-5492) ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN GO Sub Category QUASAR ABSORPTION ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone David R. Tytler 1560 USA ------------------------------------------------------------------------------------ 7. Abstract FOS ultraviolet spectra will be obtained of two high zem QSOs which we have recently detected at 1400A with the FOC. One is the only QSO known which has sufficient ultraviolet flux for FOS spectra at wavelengths below HeII 304. The detection of Gunn-Peterson absorption by the Helium II Lyman-Alpha line at 304A, one of the most exciting prospects of the HST, will provide the first direct detection of the diffuse intergalactic medium (IGM). The absence of Gunn-Peterson H I 1215 absorption shows that the IGM is hot and/or of very low density, thus He I 584 is not seen. He II 304--the most promising line--should be observable from three sources: the diffuse IGM, the discrete Lyman-Alpha clouds, and the much rarer metal line absorption systems. The Gunn-Peterson continuum optical depth is not well constrained by models (range 0.3-3000). The mere detection of this one QSO below 304A would rule out many models, limiting the IGM density, temperature, and ionization mechanisms. The total absence of flux from several targets would rule out other models. The second QSO is the second brightest object known to have flux near 300A. Its redshift is too low to show HeII 304, but it is the only QSO which we know which is bright enough to check the exciting claim by Reimers etal that absorption systems show enhanced O/C abundances. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 23.40 par: 0 10. Num targs pri: 2 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FOS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5492 PI: David R. Tytler Proposal Title: DETECTION OF THE INTERGALACTIC MEDIUM USING GUNN-PETERSON HEII304A ABSORPTION IN QSOS, AND FAR UV SPECTRA (CYCLE 4, HIGH, GO-5492) ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Pi David R Tytler 1560 - UNIVERSITY OF CALIFORNIA, USA SAN DIEGO Xiaoming Fan 1560 - UNIVERSITY OF CALIFORNIA, USA SAN DIEGO Lance Cottrell 1560 - UNIVERSITY OF CALIFORNIA, USA SAN DIEGO Kenneth M Lanzetta 1560 - UNIVERSITY OF CALIFORNIA, USA SAN DIEGO Richard G Mcmahon UNIVERSITY OF CAMBRIDGE UNITED KING X Cyril Hazard UNIVERSITY OF PITTSBURGH USA Page 3 ------------------------------------------------------------------------------------ 3. Description of proposed observations. 1. SCIENCE GOALS: We have two main goals: 1. We will observe Q1935-6914 with FOS G130H(Blue) to get a spectrum of the rest frame wavelengths below 304A. The QSO is at emission redshift 3.152, so we are interested in observed wavelengths below (1+3.152)*304=1262A. We expect to see strong continuum absorption due to He~II in the intergalactic medium, known as Gunn-Peterson absorption. We are interested in all wavelengths below 1262. 2. We will obtain spectra of a second target, Q1334- 0033, with FOS G130H, G190H and G270H. The G130H spectrum is a intended to give the continuum level and any strong lines or Lyman limits (SNR=5 at 1370A). The G190H and G270H spectra will have SNR=25 and 30/diode, sufficient for the detection of far UV absorption lines in intervening absorption systems. The goal is to check the claim by Reimers etal that intervening Lyman limit systems (with optical depth below 1) have very high ionization, with enhanced O/C. 2. OBSERVATION OF Q1935-6914: We have discovered that Q1935-6914, with zem=3.152 & V about 18, has sufficient redshift and flux for the detection of HeII 304A. From our Cycle 3 FOC UV image, we find its flux at 1400A is about 1.92x10(-16) ergs/cm^2/s/A. To measure the Gunn-Peterson optical depth, we need spectra at wavelengths less than 304(1+zem)=1262A. Either G130H or G160L cover this wavelength, but we MUST use G130H because we need the 1A resolution to limit the amount of spectrum which is destroyed by geo-coronal Ly-alpha and OI~1304 emission. (The FWHM=7A resolution of G160L leaves too little continuum which is free of emission line flux.) The G130H also gives more cts/Angstrom, but this is offset by 4 times the dark per Ang. We will use the 1.0 aperture. The G130H(Blue) has efficiency at 1260A, E = 0.00325, and the throughput of 1.0" aperture is 0.91. With the above target flux, the signal at 1260A is N(obj)=1.63x10(-3) cts/s/diode. We obtain S/N = 1.74*10(-2)*sqrt(T). With T=56080 seconds exposure time we would obtain S/N=4.12, and worse farther into the UV. Since the mean dark in blue detector of 0.0077cts/s/d is 4.2 times our 1260A signal, we examined the use of REJLIM, but in a preprint Tytler and Davis show that REJLIM gives only a 10% - 22% gain, which we consider is not worth the risk of getting no data (if a noisy diode is not switched off) and complications to the schedule etc. 2.3 ACQUISITIONS for Q1935-6914: We need to be carefull of the acquisition of this object, because the exposure time is so long. Although we do have an accurate FOC UV flux (one epoch - 1993 only), we are also unsure of the magnitude in the optical (poor quality measurements of around V=17.3 and 18.8) so we use ACQ/PEAK, not BINARY. We use the fainter magnitude of 18.8 for ACQ/PEAK exposure times. 2.4 ACQUISITIONS for all spectra We acquire into the 4.3, then 1.0 then 0.5 exactly copying the example on p.64 of the FOS Instrument Manual, version 4.0. Then we add a acq into the slit, to improve the centering of the object in the wavelength direction. This acq has steps of 0.057 arcsec, and should center to 0.03 arcsec, which is 0.4 pixels. Then we observe with the 1.0 aperture. We considered using the 0.5, but there are no advantages. The sky is negligible, the wavlength zero point depends on the acquisition and not on the slit, and the resolution does not depend on the slit. 2.2 USE OF RAPID for all spectra We request RAPID mode because we want to receive a spectrum every 40 sec (1345 in all for Q1935-6914). The SNR is set by the dark, which varies by a factor of two around the orbit, so we will weight each spectrum by SNR, which varies with wavelength, before we sum the spectra. This is not essential, but it will boost the final SNR, so it should be done if there will be no impact on scheduling or other problems. ---------- ---------------------------------------------------------- 3. OBSERVATION OF Q1334-0033 Our FOC image showed that Q1334-0033, zem=2.782 \& V=17.4, has flux at 1400A of about 4.0x10(-16) ergs/cm^2/s/A. The expected HeII 304A emission line is at about 1150A, which HST can not reach, so it is not suitable for measuring GP absorption tau(304). Instead we will observe it to detect far-UV narrow absorption lines. We assume an approximately flat spectrum across the wavelengths of interest. We will get spectra with G130H(blue), G190H(red) and G270H(red) to cover all HST UV wavelength region. We should obtain SNR=5, 25, 30/diode at wavelengths 1370, 1900, and 2700A respectively. In following we assume an approximately flat spectrum across the wavelengths of interests, and we give estimates of exposure time (in hours) to get these SNR. Grating Dark Wave E(L) T(L) N(L) N(sky) S/N Time(h) ------------------------------------ ------------------------------------ G130H/Blue 0.008 1370 0.005 0.910 0.00568 4.84(-8) 5 2.73 G190H/Red 0.01 1900 0.026 0.92 0.0530 0.00223 25 4.03 G270H/Red 0.01 2700 0.064 0.93 0.273 0.093 30 1.26 (we request slightly different exposure times on the logsheet.) Above for 1.0 arcsec aperture. 3.1 ACQUISITION of Q1334-0033 We know the FOC UV flux form this object, but we are uncertain of the visible flux, so we use ACQ/PEAK instead of binary. The acquisition steps are identical to those for the first object. First we acq into the red side and take one G270H and one G190H spectrum. Then we change to the blue camera for the G130H. 3.2 ITEMS TO CHECK?? for Q1334-0033 We request a whole new acquisition after 102.5 after swap from RED to BLUE, which we believe is necessary because the total spacecraft time exceeds 6 hours. Is this correct? Page 4 ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. SPECIAL REQUIREMENTS ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. No addition requests. ------------------------------------------------------------------------------------ 9. Description of previous HST work. 9. Have you (or your collaborators) received any previous HST observing time or archival data? If so: a. List HST program numbers and titles, and present authors involved in each 2593 White dwarf stars: PI Shipman (include Tytler) 3801 and continuations 4107, 4969. QSO Suitable for the Observation of HeII 304: PI Tytler (includes Lanzetta, Turnshek). 4324 Damped Lyman Alpha Systems in IUE Spectra: PI Lanzetta (includes Wolfe, Turnshek). 4396 and continuations 4952, 4953. QSO Absorption System Snap Shot Survey: PI Tytler (includes Bowen, Fan, Lanzetta) b. Specify which of the above programs are related to this proposal and summarize the scientific relationship, completion status, and main results from each. Programs 3801, 4107 & 4969 have yielded about 80 images of QSO fields, in which we discovered two QSO targets suitable for further observation in this proposal. No data have been obtained from program 4324. c. List publications resulting from the above data (Format: Title, Authors,Journal, Volume, Page, and Year.) Optical HST GASP Positions and Finding Charts for Bright Quasars from the HST FOS 'QSO Absorption System Snap Shot Survey', Bowen, Osmer, Tytler, Cottrell, Fan, Lanzetta, submitted to AJ, 1993. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). 10. Resources to be supplied by your institution(s) in support of this project (e.g. data-analysis capabilities, research assistance, students, funds). UCSD has one of the largest groups in the world working on QSOs and especially absorption lines: 5 faculty, 2 research scientists, 2 postdocs, 7 graduate students and 3 undergraduates. We are also the home institution for the FOS. The PI (faculty), CO-I (postdoc) and one graduate student will be involved with this proposal. We have 1 Sun sparcstation-1, and 1 sun-360 and one Sun IPX which could be used for this proposal. We also have 3 Sun SLC work stations which lack imaging capability. We have a large amount of relevant software. We have regular access to Lick, and hopefully the Keck observatory, where we will obtain observations of the QSO targets. We receive partial funding (air ticket only) from the university for observing trips at Lick. Money is available to support special (minority) undergraduates. McMahon has access to the AAT which will be used to obtain optical spectra of the southern target. ------------------------------------------------------------------------------------ 11. Address Information Name: David R Tytler Category: PI Institution: 1560 - University of California, Address: CASS, 0111 UNIVERSITY OF CALIFORNIA AT SAN DIEGO City: La Jolla State: CA Zip Code: 92093 Country: USA Telephone: (619) 534-7670 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5492 [ 5] ------------------------------------------------------------------------------------------------------------------------------------ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 101 QSO-194025- E,313,314, PLATE-ID=01CB, J2000 ZEM= 1 V = 18.8 +/- 0.5 690756 QSO- H,515,519 RA = 19H 40M 25.56S +/- 3.152 2 F(1400)=1.92+/- 0.57 E-16 1935-6914 0.1S, QSO1935-692 DEC = -69D 07' 56.5" +/- 1.0" Comments: Q1935-6914, G130H, SNR= 4.1 1260A, OBSERVATION OF HEII GUNN-PETERSON, OUR MOST IMPORTANT OBSERVATION --- PLEASE SCHEDULE EARLY IN CYCLE 4 -- ------------------------------------------------------------------------------------------------------------------------------------ 102 QSO-133647- E,313, PLATE-ID=02OA, J2000 ZEM= 1 V = 17.4 +/- 0.5 004858 QSO- H,515,519 RA = 13H 36M 47.13S +/- 2.783 2 F(1400)=4.0 +/- 0.3 E-16 1334-0033 0.1S, QSO1334-005- DEC = -00D 48' 57.78" +/- UM590 1.0" Comments: GO REF. Q1334-0033 FOR FAR-UV ABSORPTION LINES ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5492 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 101.1 QSO-194025- FOS/BL ACQ/ 4.3 MIRROR SCAN-STEP- 1 40S 1 1 CYCLE 4 690756 PEAK Y=1.204 GROUP 101.1-101.65 SEARCH-SIZE-X=1 WITHIN 30D SEARCH-SIZE-Y=3 ONBOARD ACQ FOR 101.2 Comments: ACQ/PEAK COPIED FROM FOS HANDBK.V4.0,P.67, LINE 13.0- 13.2, OBSERVATION OF HEII GUNN- PETERSON, OUR MOST IMPORTANT OBSERVATION PLEASE SCHEDULE EARLY IN CYCLE 4 ------------------------------------------------------------------------------------------------------------------------------------ 101.2 QSO-194025- FOS/BL ACQ/ 1.0 MIRROR SCAN-STEP- 1 40S 1 1 CYCLE 4 690756 PEAK X=0.602 ONBOARD SCAN-STEP- ACQUISITION FOR Y=0.602 101.3 SEARCH-SIZE-X=6 SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 101.3 QSO-194025- FOS/BL ACQ/ 0.5 MIRROR SEARCH-SIZE-X=3 1 60S 1 1 CYCLE 4 690756 PEAK SEARCH-SIZE-Y=3 ONBOARD SCAN-STEP-X=0.3 ACQUISITION FOR SCAN-STEP-Y=0.3 101.4 ------------------------------------------------------------------------------------------------------------------------------------ 101.4 QSO-194025- FOS/BL ACQ/ 0.25X2. MIRROR SEARCH-SIZE-X=9 1 130S 1 1 CYCLE 4 690756 PEAK 0 SEARCH-SIZE-Y=1 ONBOARD SCAN-STEP- ACQUISITION FOR X=0.057 101.5 Comments: TO IMPROVE WAVELENGTH ACCURACY ------------------------------------------------------------------------------------------------------------------------------------ 101.5 QSO-194025- FOS/BL RAPID 1.0 G130H READ-TIME=40 1 26880S 1 CYCLE 4 690756 Comments: GR=G130H, TO GET S/N=4.12 AT 1260A. OBSERVATION OF HEII GUNN -PETERSON OUR MOST IMPORTANT OBSERVATION - PLEASE SCHEDULE EARLY IN CYCLE 4 ------------------------------------------------------------------------------------------------------------------------------------ 101.61 QSO-194025- FOS/BL ACQ/ 4.3 MIRROR SCAN-STEP- 1 40S 1 1 CYCLE 4 690756 PEAK Y=1.204 ONBOARD ACQ FOR SEARCH-SIZE-X=1 101.62 SEARCH-SIZE-Y=3 Comments: OBSERVATION OF HEII GUNN- PETERSON, OUR MOST IMPORTANT OBSERVATION PLEASE SCHEDULE EARLY IN CYCLE 4 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5492 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 101.62 QSO-194025- FOS/BL ACQ/ 1.0 MIRROR SCAN-STEP- 1 40S 1 1 CYCLE 4 690756 PEAK X=0.602 ONBOARD SCAN-STEP- ACQUISITION FOR Y=0.602 101.63 SEARCH-SIZE-X=6 SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 101.63 QSO-194025- FOS/BL ACQ/ 0.5 MIRROR SEARCH-SIZE-X=3 1 60S 1 1 CYCLE 4 690756 PEAK SEARCH-SIZE-Y=3 ONBOARD SCAN-STEP-X=0.3 ACQUISITION FOR SCAN-STEP-Y=0.3 101.64 ------------------------------------------------------------------------------------------------------------------------------------ 101.64 QSO-194025- FOS/BL ACQ/ 0.25X2. MIRROR SEARCH-SIZE-X=9 1 130S 1 1 CYCLE 4 690756 PEAK 0 SEARCH-SIZE-Y=1 ONBOARD SCAN-STEP- ACQUISITION FOR X=0.057 101.65 Comments: TO IMPROVE WAVELENGTH ACCURACY ------------------------------------------------------------------------------------------------------------------------------------ 101.65 QSO-194025- FOS/BL RAPID 1.0 G130H READ-TIME=40 1 26880S 1 CYCLE 4 690756 Comments: GR=G130H, TO GET S/N=4.12 AT 1260A. OBSERVATION OF HEII GUNN -PETERSON OUR MOST IMPORTANT OBSERVATION - PLEASE SCHEDULE EARLY IN CYCLE 4 ------------------------------------------------------------------------------------------------------------------------------------ 102.1 QSO-133647- FOS/RD ACQ/ 4.3 MIRROR SCAN-STEP- 1 10S 1 2 CYCLE 4 004858 PEAK Y=1.204 GROUP 102.1-102.6 SEARCH-SIZE-X=1 NO GAP SEARCH-SIZE-Y=3 ONBOARD ACQUISITION FOR 102.2 ------------------------------------------------------------------------------------------------------------------------------------ 102.2 QSO-133647- FOS/RD ACQ/ 1.0 MIRROR SCAN-STEP- 1 10S 1 2 CYCLE 4 004858 PEAK X=0.602 ONBOARD SCAN-STEP- ACQUISITION FOR Y=0.602 102.3 SEARCH-SIZE-X=6 SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 102.3 QSO-133647- FOS/RD ACQ/ 0.5 MIRROR SEARCH-SIZE-X=5 1 18S 2 CYCLE 4 004858 PEAK SEARCH-SIZE-Y=5 ONBOARD SCAN-STEP- ACQUISITION FOR X=.172 102.4 SCAN-STEP- Y=.172 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5492 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 102.4 QSO-133647- FOS/RD ACQ/ 0.25X2. MIRROR SEARCH-SIZE-X=9 1 30S 2 CYCLE 4 004858 PEAK 0 SEARCH-SIZE-Y=1 ONBOARD SCAN-STEP- ACQUISITION FOR X=.057 102.5 SCAN-STEP- Y=.057 Comments: TO IMPROVE WAVELENGTH ACCURACY ------------------------------------------------------------------------------------------------------------------------------------ 102.5 QSO-133647- FOS/RD RAPID 1.0 G270H READ-TIME=40 1 4240S 2 CYCLE 4 004858 Comments: GR=G270H, SNR=30/DIODE AT 2700A ------------------------------------------------------------------------------------------------------------------------------------ 102.55 WAVE FOS/RD ACCUM 1.0 G270H 1 DEF 2 CYCLE 4 SEQ 102.5-102.55 NO GAP ------------------------------------------------------------------------------------------------------------------------------------ 102.56 WAVE FOS/RD ACCUM 1.0 G190H 1 DEF 2 CYCLE 4 SEQ 102.56-102.6 NO GAP ------------------------------------------------------------------------------------------------------------------------------------ 102.6 QSO-133647- FOS/RD RAPID 1.0 G190H READ-TIME=40 1 15200S 1 2 CYCLE 4 004858 Comments: GR=G190H, SNR=25 / DIODE AT 1900A ------------------------------------------------------------------------------------------------------------------------------------ 103.1 QSO-133647- FOS/BL ACQ/ 4.3 MIRROR SCAN-STEP- 1 20S 1 3 CYCLE 4 004858 PEAK Y=1.204 GROUP 103.1-103.5 SEARCH-SIZE-X=1 NO GAP SEARCH-SIZE-Y=3 ONBOARD ACQUISITION FOR 103.2 ------------------------------------------------------------------------------------------------------------------------------------ 103.2 QSO-133647- FOS/BL ACQ/ 1.0 MIRROR SCAN-STEP- 1 20S 1 3 CYCLE 4 004858 PEAK X=0.602 ONBOARD SCAN-STEP- ACQUISITION FOR Y=0.602 103.3 SEARCH-SIZE-X=6 SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 103.3 QSO-133647- FOS/BL ACQ/ 0.5 MIRROR SEARCH-SIZE-X=3 1 30S 3 CYCLE 4 004858 PEAK SEARCH-SIZE-Y=3 ONBOARD SCAN-STEP-X=.3 ACQUISITION FOR SCAN-STEP-Y=.3 103.4 ------------------------------------------------------------------------------------------------------------------------------------ 103.4 QSO-133647- FOS/BL ACQ/ 0.25X2. MIRROR SEARCH-SIZE-X=9 1 50S 1 3 CYCLE 4 004858 PEAK 0 SEARCH-SIZE-Y=1 ONBOARD SCAN-STEP- ACQUISITION FOR X=.057 103.5 SCAN-STEP- Y=.057 Comments: TO IMPROVE WAVELENGTH ACCURACY ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5492 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 103.5 QSO-133647- FOS/BL RAPID 1.0 G130H READ-TIME=40 1 9920S 3 CYCLE 4 004858 Comments: GR=G130H, SNR=5/DIODE AT 1370A. ------------------------------------------------------------------------------------------------------------------------------------ 203.1 QSO-133647- FOS/BL ACQ/ 4.3 MIRROR SCAN-STEP- 1 20S 1 3 CYCLE 4 004858 PEAK Y=1.204 GROUP 203.1-203.5 SEARCH-SIZE-X=1 NO GAP SEARCH-SIZE-Y=3 ONBOARD ACQUISITION FOR 203.2 ------------------------------------------------------------------------------------------------------------------------------------ 203.2 QSO-133647- FOS/BL ACQ/ 1.0 MIRROR SCAN-STEP- 1 20S 1 3 CYCLE 4 004858 PEAK X=0.602 ONBOARD SCAN-STEP- ACQUISITION FOR Y=0.602 203.3 SEARCH-SIZE-X=6 SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 203.3 QSO-133647- FOS/BL ACQ/ 0.5 MIRROR SEARCH-SIZE-X=3 1 30S 3 CYCLE 4 004858 PEAK SEARCH-SIZE-Y=3 ONBOARD SCAN-STEP-X=.3 ACQUISITION FOR SCAN-STEP-Y=.3 203.4 ------------------------------------------------------------------------------------------------------------------------------------ 203.4 QSO-133647- FOS/BL ACQ/ 0.25X2. MIRROR SEARCH-SIZE-X=9 1 50S 1 3 CYCLE 4 004858 PEAK 0 SEARCH-SIZE-Y=1 ONBOARD SCAN-STEP- ACQUISITION FOR X=.057 203.5 SCAN-STEP- Y=.057 Comments: TO IMPROVE WAVELENGTH ACCURACY ------------------------------------------------------------------------------------------------------------------------------------ 203.5 QSO-133647- FOS/BL RAPID 1.0 G130H READ-TIME=40 1 9920S 3 CYCLE 4 004858 Comments: GR=G130H, SNR=5/DIODE AT 1370A. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5492 [ 10] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/BL FOS/RD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/PEAK RAPID ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SCAN-STEP-Y=1.204 SEARCH-SIZE-X=1 SEARCH-SIZE-Y=3 SCAN-STEP-X=0.602 SCAN-STEP-Y=0.602 SEARCH-SIZE-X=6 SEARCH-SIZE-Y=2 SEARCH-SIZE-X=3 SCAN-STEP-X=0.3 SCAN-STEP-Y=0.3 SEARCH-SIZE-X=9 SEARCH-SIZE-Y=1 SCAN-STEP-X=0.057 READ-TIME=40 SEARCH-SIZE-X=5 SEARCH-SIZE-Y=5 SCAN-STEP-X=.172 SCAN-STEP-Y=.172 SCAN-STEP-X=.057 SCAN-STEP-Y=.057 SCAN-STEP-X=.3 SCAN-STEP-Y=.3 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GO ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 23.40 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category QUASAR ABSORPTION ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CYCLE 4; GROUP 101.1-101.65 WITHIN 30D; ONBOARD ACQ FOR 101.2; ONBOARD ACQUISITION FOR 101.3; ONBOARD ACQUISITION FOR 101.4; ONBOARD ACQUISITION FOR 101.5; ONBOARD ACQ FOR 101.62 ONBOARD ACQUISITION FOR 101.63 ONBOARD ACQUISITION FOR 101.64 ONBOARD ACQUISITION FOR 101.65 GROUP 102.1-102.6 NO GAP; ONBOARD ACQUISITION FOR 102.2; ONBOARD ACQUISITION FOR 102.3; ONBOARD ACQUISITION FOR 102.4; ONBOARD ACQUISITION FOR 102.5; SEQ 102.5-102.55 NO GAP; SEQ 102.56-102.6 NO GAP; GROUP 103.1-103.5 NO GAP; ONBOARD ACQUISITION FOR 103.2; ONBOARD ACQUISITION FOR 103.3; ONBOARD ACQUISITION FOR 103.4; ONBOARD ACQUISITION FOR 103.5; GROUP 203.1-203.5 NO GAP; ONBOARD ACQUISITION FOR 203.2; ONBOARD ACQUISITION FOR 203.3; ONBOARD ACQUISITION FOR 203.4; ONBOARD ACQUISITION FOR 203.5; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G130H G270H G190H ------------------------------------------------------------------------------------------------------------------------------------ Target Names QSO-194025-690756 QSO-1935-6914 QSO1935-692 QSO-133647-004858 QSO-1334-0033 QSO1334-005-UM590 ------------------------------------------------------------------------------------------------------------------------------------