Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 5592 Report Date: 18-Jul-95:17:43 Version: ********** Check-in Date: ********** 1.Proposal Title: GHRS ECH-A SENSITIVITY CALIBRATION--CYCLE 4 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID CALIBRATION CAL/HRS Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Dennis C. Ebbets BALL AEROSPACE AND COMMUNICA USA (303)939-5964 ------------------------------------------------------------------------------------ 7. Abstract This proposal defines a series of observations that will reestablish the sensitivity calibration of the GHRS Echelle A spectroscopic mode during cycle 4. It makes use of the UV standard star Mu Columbae, with target acquisitions performed using mirror A1. The OSCAN mode is used to scan orders 33-49 at three carrousel positions that straddle the peak of the blaze function, with the star in the LSA. Only the peak of blaze will be scanned with the star in the SSA. ------------------------------------------------------------------------------------ 8. Scientific Key Words: HRS, CALIBRATION, SCIENCE VERIFICATION ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 6.07 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: HRS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 5592 PI: Dennis C. Ebbets Proposal Title: GHRS ECH-A SENSITIVITY CALIBRATION--CYCLE 4 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Dennis Ebbets BACG USA Steve Hulbert STSCI USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. The star will be acquired with Mirror A1, using an RTB search a double locate, and two image mode maps. With the target well centered in the LSA a series of OSCAN exposures will be made to record orders 33-49 at three carrousel positions. These were selected to straddle the peak of the blaze function which our SV data indicated is near m*lambda=56100. A substep pattern with four samples per diode width, and two background bins is used. The exposure times will produce approximately 1000 counts per diode in each spectrum bin. The full range of orders was divided into three sections, with an appropriate exposure time specified for each group (the central orders are brighter and can use a shorter exposure than the short and long wavelength ends). After completion of the LSA exposures an RTB peakup will center the target in the SSA. An OSCAN sequence will measure the cont rates near the center of the blaze. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. The primary goal is to compare the observed count rates with the tabulated standard fluxes to derive the Echelle sensitivity function. This will be used to help plan exposure times for future observations, and to reduce raw data. Better determination of the peak of the blaze function for Echelle A should also be possible. Comparison of the throughputs for the LSA and SSA will be made. Interorder and Echelle scattered light will be examined. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Data analysis Personnel Travel and Publications Support ------------------------------------------------------------------------------------ 11. Address Information Name: DENNIS C. EBBETS Category: PI Institution: BALL AEROSPACE and COMMUNICATIONS Address: PO Box 1062 AR1 City: Boulder State: CO Zip Code: 80306 Country: USA Telephone: 303 939 5964 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: Steve Hulbert Category: CON Institution: STScI Address: 3700 San Martin Drive City: Baltimore State: MD Zip Code: 21218 Country: USA Telephone: 410 338 4911 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 5592 [ 3] ------------------------------------------------------------------------------------------------------------------------------------ 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 MU-COL J,702 RA = 5H 45M 59.92S +/- 0.5S, 2000 1 V=5.17, TYPE = 09.5IV, E(B-V)=0.02 DEC = -32D 18' 22.8" +/- 2 F-CONT(1200)=1.5 E-9 0.3", 3 F-CONT(1500)=1.9 E-9 PLATE-ID=01WB 4 F-CONT(1700)=1.2 E-9 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B 1950.00 0.0040 +/- 0.0040 -0.0250 +/- 0.0030 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5592 [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 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 ------------------------------------------------------------------------------------------------------------------------------------ 100 MU-COL HRS ACQ 2.0 MIRROR-A1 SEARCH-SIZE=5 1 5.0S 50 1 1 ONBOARD ACQ FOR BRIGHT=RETURN 110 - 250 CYCLE 4 / 100 - 330 SEQ 100-330 WITHIN 1D Comments: STEP-TIME=0.2 SEC ------------------------------------------------------------------------------------------------------------------------------------ 110 MU-COL HRS ACQ/ 2.0 MIRROR-A1 1 102.0S 50 1 1 PEAKUP Comments: STEP-TIME=1.0 SEC ------------------------------------------------------------------------------------------------------------------------------------ 120 MU-COL HRS IMAGE 2.0 MIRROR-A1 NX=22 1 96.8S 30 1 1 NY=22 DELTA-X=4 DELTA-Y=4 ------------------------------------------------------------------------------------------------------------------------------------ 130 MU-COL HRS IMAGE 2.0 MIRROR-A1 NX=22 1 96.8S 30 1 1 NY=22 DELTA-X=2 DELTA-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 200 MU-COL HRS OSCAN 2.0 ECH-A 1692.12 STEP-PATT=7 1 544.0S 30 4 1 1 OSCAN-MIN=33 OSCAN-MAX=37 ------------------------------------------------------------------------------------------------------------------------------------ 210 MU-COL HRS OSCAN 2.0 ECH-A 1509.18 STEP-PATT=7 1 272.0S 30 3 1 9 OSCAN-MIN=37 OSCAN-MAX=46 ------------------------------------------------------------------------------------------------------------------------------------ 220 MU-COL HRS OSCAN 2.0 ECH-A 1213.91 STEP-PATT=7 1 435.2S 30 2 1 3 OSCAN-MIN=46 OSCAN-MAX=49 ------------------------------------------------------------------------------------------------------------------------------------ 230 MU-COL HRS OSCAN 2.0 ECH-A 1700.00 STEP-PATT=7 1 544.0S 30 4 1 0 OSCAN-MIN=33 OSCAN-MAX=37 ------------------------------------------------------------------------------------------------------------------------------------ 240 MU-COL HRS OSCAN 2.0 ECH-A 1516.21 STEP-PATT=7 1 272.0S 30 3 1 6 OSCAN-MIN=37 OSCAN-MAX=46 ------------------------------------------------------------------------------------------------------------------------------------ 250 MU-COL HRS OSCAN 2.0 ECH-A 1219.56 STEP-PATT=7 1 435.2S 30 2 1 5 OSCAN-MIN=46 OSCAN-MAX=49 ------------------------------------------------------------------------------------------------------------------------------------ 256 MU-COL HRS ACQ 2.0 MIRROR-A1 SEARCH-SIZE=5 1 5.0S 50 1 1 ONBOARD ACQ FOR BRIGHT=RETURN 257 - 330 AFTER 100 BY 8H Comments: STEP-TIME=0.2 SEC ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 5592 [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 257 MU-COL HRS ACQ/ 2.0 MIRROR-A1 1 102.0S 50 1 1 PEAKUP Comments: STEP-TIME=1.0 SEC ------------------------------------------------------------------------------------------------------------------------------------ 258 MU-COL HRS IMAGE 2.0 MIRROR-A1 NX=22 1 96.8S 30 1 1 NY=22 DELTA-X=4 DELTA-Y=4 ------------------------------------------------------------------------------------------------------------------------------------ 259 MU-COL HRS IMAGE 2.0 MIRROR-A1 NX=22 1 96.8S 30 1 1 NY=22 DELTA-X=2 DELTA-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 260 MU-COL HRS OSCAN 2.0 ECH-A 1707.87 STEP-PATT=7 1 544.0S 30 4 1 9 OSCAN-MIN=33 OSCAN-MAX=37 ------------------------------------------------------------------------------------------------------------------------------------ 270 MU-COL HRS OSCAN 2.0 ECH-A 1523.24 STEP-PATT=7 1 272.0S 30 3 1 3 OSCAN-MIN=37 OSCAN-MAX=46 ------------------------------------------------------------------------------------------------------------------------------------ 280 MU-COL HRS OSCAN 2.0 ECH-A 1225.21 STEP-PATT=7 1 435.2S 30 2 1 7 OSCAN-MIN=46 OSCAN-MAX=49 ------------------------------------------------------------------------------------------------------------------------------------ 300 MU-COL HRS ACQ/ 0.25 MIRROR-A1 SEARCH-SIZE=5 1 25.0S 50 1 1 ONBOARD ACQ FOR PEAKUP 310 - 330 Comments: STEP-TIME=1.0 SEC ------------------------------------------------------------------------------------------------------------------------------------ 310 MU-COL HRS OSCAN 0.25 ECH-A 1700.00 STEP-PATT=7 1 544.0S 30 4 1 0 OSCAN-MIN=33 OSCAN-MAX=37 ------------------------------------------------------------------------------------------------------------------------------------ 320 MU-COL HRS OSCAN 0.25 ECH-A 1516.21 STEP-PATT=7 1 272.0S 30 3 1 6 OSCAN-MIN=37 OSCAN-MAX=46 ------------------------------------------------------------------------------------------------------------------------------------ 330 MU-COL HRS OSCAN 0.25 ECH-A 1219.56 STEP-PATT=7 1 435.2S 30 2 1 5 OSCAN-MIN=46 OSCAN-MAX=49 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 5592 [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP IMAGE OSCAN ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SEARCH-SIZE=5 BRIGHT=RETURN NX=22 NY=22 DELTA-X=4 DELTA-Y=4 DELTA-X=2 DELTA-Y=2 STEP-PATT=7 OSCAN-MIN=33 OSCAN-MAX=37 OSCAN-MIN=37 OSCAN-MAX=46 OSCAN-MIN=46 OSCAN-MAX=49 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for CAL/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 6.07 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category CALIBRATION ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 110 - 250; CYCLE 4 / 100 - 330; SEQ 100-330 WITHIN 1D; ONBOARD ACQ FOR 257 - 330; AFTER 100 BY 8H; ONBOARD ACQ FOR 310 - 330; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-A1 ECH-A ------------------------------------------------------------------------------------------------------------------------------------ Target Names MU-COL ------------------------------------------------------------------------------------------------------------------------------------