Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 2849c Report Date: 09-May-96:17:28 Version: ********** Check-in Date: ********** 1.Proposal Title: PART 1-APERTURE OFFSETS AND FIRST-ORDER WAVELENGTH CALIBRATIONS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID CALIBRATION CAL/HRS Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Douglas K. Duncan STSCI USA 301-338-4935 GHRS INST. SCIENTIST ------------------------------------------------------------------------------------ 7. Abstract The purpose of the test is to calibrate the geometrical offsets between the Large Science Aperture and the Small Science Aperture, so that dispersion constants derived for the SSA may be used to assign accurate wavelengths to spectra obtained with the LSA. Proposal 2097a observes the same star as the IDT does in SV; Prop. 2097b one of the Hobbs-York wavelength standard stars to tie GHRS wavelengths to the external world (this is the fundamental HST wavelength standard). Revised 11/6/89 by PStanley to remove G200M observations per Duncan's request. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 5.88 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 2849c PI: Douglas K. Duncan Proposal Title: PART 1-APERTURE OFFSETS AND FIRST-ORDER WAVELENGTH CALIBRATIONS ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Douglas K. Duncan STSCI USA Ronald L. Gilliland STSCI USA ------------------------------------------------------------------------------------ 2. Scientific Justification. The purpose of the test is to calibrate the geometrical offsets between the Large Science Aperture and the Small Science Aperture, so that dispersion constants derived for the SSA may be used to assign accurate wavelengths to spectra obtained with the LSA. ------------------------------------------------------------------------------------ 3. Description of proposed observations. OBSERVATION: The star will be acquired using an On-board (Mode II) acquisition, and will be centered in the LSA. A field map will be taken to measure the precise location in the aperture. The carrousel will then be rotated to position the desired grating at the chosen wavelength. Spectral lamp SC1 will be turned on and its spectrum will be recorded, including deriving a new SPYBAL offset. The spectrum of the star in the LSA will be recorded next. The star will then be translated to the SSA, and its spectrum will be recorded. It is important that the carrousel not be moved bwtween these three observations. After the SSA spectrum, the carrousel will be rotated to position the acquisition mirror, and a field map of the SSA will be obtained. After this map, the star will be returned to the center of the LSA. This sequence will be repeated at four or five wavelengths (carrousel positions) for each of the four medium resolution first order gratings. The spectrum will contain many deep and narrow interstellar absorption lines at each of the selected wavelengths. The precise locations of many lines will be compared to derive the offset of the LSA spectrum with respect to the SSA spectrum. The offsets will be calibrated for each grating as functions of carrousel angle and sample position. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. Offsets between the Small Science Aperture and the two Pt-Ne spectral lamps were established during the Phase 6 ground based calibration program. There was no easy way to center a point source in the Large Science Aperture, and offsets for the LSA were not measured. This test will use interstellar lines in a stellar spectrum observed through both apertures to derive offsets for the LSA relative to the SSA. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. None are requested. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. The target spectrum contains many narrow absorption lines from interstellar material. The observations of the SC1 lamp will establish a precise wavelength scale for the SSA at each carrousel position. The positions of many lines across the entire diode array will be measured in the stellar spectra observed through both the LSA and the SSA. The field maps of the apertures will provide information about the precise location of the star within each aperture. The observed offsets will be parameterized as functions of carrousel position and diode number (or sample). ------------------------------------------------------------------------------------ 11. Address Information Page 3 Name: DOUGLAS K DUNCAN Category: PI Institution: ST SCI Address: 3700 SAN MARTIN DRIVE City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ Name: DOUGLAS DUNCAN Category: PI Institution: STSCI Address: 3700 SAN MARTIN DR. City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: 301-338-4935 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 2849c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD93205 HOT STAR WITH LOTS OF RA= 10H 42M 37.4S +/- 0.5S, 1950 1 V=7.75 INTERSTELLAR LINES DEC=-59D 28' 28.0" +/- 0.3" 2 E(B-V)=0.37 3 F-CONT(1250)=4.5E-11 Comments: ALTERNATE TARGET. ------------------------------------------------------------------------------------------------------------------------------------ 2 HD93521 ^ RA=10H 48M 23.51S +/- 0.5S, 2000 1 V=7.04 GSC3009-2547 DEC=+37D 34' 12.8" +/- 0.3", 2 B-V=-0.28 PLATE-ID=01RB 3 E(B-V)=0.03 4 F-CONT(1200)=2.8E-10 5 F-CONT(1300)=3.3E-10 6 F-CONT(1400)=2.3E-10 7 F-CONT(1650)=1.3E-10 8 F-CONT(2000)=1.0E-10 9 F-CONT(2400)=6.5E-11 Comments: PRIME TARGET. 10 F-CONT(2800)=4.0E-11 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2849c [ 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 WAVE HRS ACCUM SC1 # 1000 STEP-PATT=5 1 68S 1 CALIB FOR 2-3 SPECT COMB=TWO SEQ 1-3 NO GAP DOPPLER=DEF Comments: DO NOT MOVE CARROUSEL DURING 1- 3. SUBSTEP PATTERN #5 = 4 SAMPLES PER DIODE WIDTH, 2 BACKGROUND BINS, 2 POINT COMB- ADDITION. COMPUTE AND APPLY NEW SPYBAL OFFSET. FIVE COMPLETE COMB CYCLES. ------------------------------------------------------------------------------------------------------------------------------------ 2 ^ HD93521 ^ ^ 2.0 ^ ^ ^ ^ 27.2S 30 3 ^ Comments: APPLY SPYBAL FROM 1. ------------------------------------------------------------------------------------------------------------------------------------ 3 ^ ^ ^ ^ 0.25 ^ ^ ^ ^ 40.8S ^ ^ Comments: APPLY SPYBAL FROM 1. ------------------------------------------------------------------------------------------------------------------------------------ 4 DEFINE ^ ^ IMAGE 2.0 ^ 1 48.4S 1 MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 5 DEFINE ^ ^ ^ 0.25 ^ DELTA-X=1 ^ 96.8S ^ MAPSSA DELTA-Y=1 PRECISION=HIGH ------------------------------------------------------------------------------------------------------------------------------------ 6 HD93521 HRS ACQ 2.0 MIRROR-A1 FAINT=120 1 25S 1 1 ONBOARD ACQ FOR 6.6-15 GUID TOL 0.012" / 6.0-15 Comments: STEP-TIME=1 ------------------------------------------------------------------------------------------------------------------------------------ 6.5 WAVE HRS ACCUM SC1 MIRROR-A1 STEP-PATT=5 1 272S 1 CALIB FOR 7-15 COMB=TWO SEQ 6.6-6.8 NO GAP Comments: COMPUTE AND APPLY NEW SPYBAL OFFSET. USE 20 COMB CYCLES = 40 REPEATS OF SUBSTEP PATTERN #5. ------------------------------------------------------------------------------------------------------------------------------------ 6.6 HD93521 HRS ACCUM 2.0 MIRROR-A1 STEP-PATT=5 1 13.6S 100 1 1 COMB=TWO Comments: COMPUTE AND APPLY NEW SPYBAL OFFSET. USE 1 COMB CYCLE = 2 REPEATS OF SUBSTEP PATTERN #5. ------------------------------------------------------------------------------------------------------------------------------------ 6.8 HD93521 HRS ACCUM 0.25 MIRROR-A1 STEP-PATT=5 1 13.6S 100 1 1 COMB=TWO Comments: COMPUTE AND APPLY NEW SPYBAL OFFSET. USE 1 COMB CYCLE = 2 REPEATS OF SUBSTEP PATTERN #5. ------------------------------------------------------------------------------------------------------------------------------------ 7 USE MIRROR-A1 SEQ 7-9 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2849c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 8 USE G140M X1.19 X2 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 9 USE MIRROR-A1 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 10 USE MIRROR-N1 SEQ 10-12 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 11 USE G140M X1.27 X2 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 12 USE MIRROR-A1 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 13 USE MIRROR-A1 SEQ 13-15 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 14 USE G140M X1.608 X4 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 15 USE MIRROR-A1 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 19 HD93521 HRS ACQ 2.0 MIRROR-A2 FAINT=1000 1 5S 1 1 ONBOARD ACQ FOR 19.6-61 GUID TOL 0.012" / 19-61 ------------------------------------------------------------------------------------------------------------------------------------ 19.5 WAVE HRS ACCUM SC1 MIRROR-A2 STEP-PATT=3 1 80S 1 CALIB FOR 20-61 COMB=TWO SEQ 19.6-19.8 NO STEP-TIME=5 GAP Comments: COMPUTE AND APPLY NEW SPYBAL OFFSET. USE 4 COMB CYCLES = 8 REPEATS OF SUBSTEP PATTERN #3. ------------------------------------------------------------------------------------------------------------------------------------ 19.6 HD93521 HRS ACCUM 2.0 MIRROR-A2 STEP-PATT=3 1 1.6S 100 1 COMB=TWO STEP-TIME=0.2 Comments: COMPUTE AND APPLY NEW SPYBAL OFFSET. USE 1 COMB CYCLE = 2 REPEATS OF SUBSTEP PATTERN #3. ------------------------------------------------------------------------------------------------------------------------------------ 19.8 HD93521 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=3 1 1.6S 100 1 COMB=TWO STEP-TIME=0.2 Comments: COMPUTE AND APPLY NEW SPYBAL OFFSET. USE 1 COMB CYCLE = 2 REPEATS OF SUBSTEP PATTERN #3. ------------------------------------------------------------------------------------------------------------------------------------ 20 USE MIRROR-A2 SEQ 20-22 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2849c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 21 USE G160M X1.27 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 22 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 23 USE ^ SEQ 23-25 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 24 USE G160M X1.325 SEQ 23-25 NO GAP SPECT ------------------------------------------------------------------------------------------------------------------------------------ 25 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 26 USE MIRROR-A2 SEQ 26-28 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 27 USE G160M X1.4 X2 SEQ 26-28 NO GAP SPECT ------------------------------------------------------------------------------------------------------------------------------------ 28 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 29 USE ^ SEQ 29-31 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 30 USE G160M X1.55 X2 SEQ 29-31 NO GAP SPECT ------------------------------------------------------------------------------------------------------------------------------------ 31 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 31.2 USE ^ SEQ 31.2-31.6 NO MAPLSA GAP ------------------------------------------------------------------------------------------------------------------------------------ 31.4 USE G160M X1.655 X2 SEQ 31.2-31.6 NO SPECT GAP ------------------------------------------------------------------------------------------------------------------------------------ 31.6 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 32 USE ^ SEQ 32-34 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 33 USE G160M X1.81 X2 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 34 USE MIRROR-A2 SEQ 32-34 NO GAP MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2849c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 47 USE MIRROR-A2 SEQ 47-49 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 48 USE G270M X2.02 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 49 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 50 USE MIRROR-A2 SEQ 50-52 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 51 USE G270M X2.38 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 52 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 53 USE MIRROR-A2 SEQ 53-55 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 54 USE G270M X2.58 SEQ 53-55 NO GAP SPECT ------------------------------------------------------------------------------------------------------------------------------------ 55 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 56 USE ^ SEQ 56-58 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 57 USE G270M X2.80 ^ SPECT ------------------------------------------------------------------------------------------------------------------------------------ 58 USE MIRROR-A2 ^ MAPSSA ------------------------------------------------------------------------------------------------------------------------------------ 59 USE MIRROR-A2 SEQ 59-61 NO GAP MAPLSA ------------------------------------------------------------------------------------------------------------------------------------ 60 USE G270M X2.85 SEQ 59-61 NO GAP SPECT ------------------------------------------------------------------------------------------------------------------------------------ 61 USE MIRROR-A2 ^ MAPSSA Comments: END OF EXPOSURE LOGSHEETS ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 2849c [ 9] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ^ ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ^ IMAGE ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters STEP-PATT=5 COMB=TWO DOPPLER=DEF DELTA-X=1 DELTA-Y=1 PRECISION=HIGH FAINT=120 FAINT=1000 STEP-PATT=3 STEP-TIME=5 STEP-TIME=0.2 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for CAL/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 5.88 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category CALIBRATION ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CALIB FOR 2-3; SEQ 1-3 NO GAP; ONBOARD ACQ FOR 6.6-15; GUID TOL 0.012" / 6.0-15 CALIB FOR 7-15; SEQ 6.6-6.8 NO GAP; SEQ 7-9 NO GAP; ^ SEQ 10-12 NO GAP; SEQ 13-15 NO GAP; ONBOARD ACQ FOR 19.6-61; GUID TOL 0.012" / 19-61 CALIB FOR 20-61; SEQ 19.6-19.8 NO GAP; SEQ 20-22 NO GAP; SEQ 23-25 NO GAP; SEQ 26-28 NO GAP; SEQ 29-31 NO GAP; SEQ 31.2-31.6 NO GAP SEQ 32-34 NO GAP; SEQ 47-49 NO GAP; SEQ 50-52 NO GAP; SEQ 53-55 NO GAP; SEQ 56-58 NO GAP; SEQ 59-61 NO GAP; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements # ^ MIRROR-A1 G140M MIRROR-N1 MIRROR-A2 G160M G270M ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD93205 HD93521 GSC3009-2547 ------------------------------------------------------------------------------------------------------------------------------------