Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 3374c Report Date: 09-May-96:18:33 Version: ********** Check-in Date: ********** 1.Proposal Title: GHRS SSA SPIRAL SEARCH VERIFICATION ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID CAL/HRS Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Ronald L. Gilliland SPACE TELESCOPE SCIENCE INST USA 301-338-4454 ------------------------------------------------------------------------------------ 7. Abstract The highest priority augmentation of flight software in support of GHRS for build 4.0 is capability of return to brightest point of an SSA spiral search. This will allow a true flux peakup in the SSA, a sorely missed capability currently. There are two points that need verification and testing in support of flight software changes: 1) In SSA spiral what is optimal step-size? By doing a "brute-force" spiral search in this test we will accumulate valuable supporting information to facilitate rapid utility of new capibility with FSW 4.0. 2) The attenuated mirrors pick off only a small part of the beam, and introduce their own aberrations in the resultant PSF. It is not obvious that maximizing image placement for the mirrors, is same as that maximizing placement for the spectral elements. This proposal yields a direct test of possible mirror/dispersing element differences. This test will also provide valuable information on current alignment uncertainties for mirror A2. ------------------------------------------------------------------------------------ 8. Scientific Key Words: CALIBRATION SPECTROSCOPY, UV ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 1.39 par: 0 10. Num targs pri: 1 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 3374c PI: Ronald L. Gilliland Proposal Title: GHRS SSA SPIRAL SEARCH VERIFICATION ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Ronald Gilliland STSCI USA ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. Minimal ACCUM mode exposures are more than adequate to define a high quality spiral flux "map" for both A2 and G160M. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. Data will be analysed at the ST ScI using fully developed and tested software. ------------------------------------------------------------------------------------ 13. Flux measurements will be obtained at a grid of positions near nominal best pointing with the SSA, using both a mirror and a dispersing element. This will be used to derive optimal step size for SSA spiral search. ------------------------------------------------------------------------------------ 11. Address Information Name: RONALD L. GILLILAND Category: PI Institution: SPACE TELESCOPE SCIENCE INSTITUTE Address: City: State: Zip Code: Country: Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 3374c [ 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 HD141556 CHI BP HG MN STAR RA=15H 47M 46.468S +/- 0.2", 1950 V=+5 1 V=3.95+/-.05, TYPE=BP -LUP DEC=-33D 28' 35.36" +/- 0.2" 2 F-CONT(1362)=1.8 E-10 3 F-CONT(1868)=1.9 E-10 4 F-CONT(2682)=1.0 E-10 Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1950.00 -0.0006 +/- 0.0007 -0.0320 +/- 0.0100 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3374c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 HD141556 HRS ACQ 2.0 MIRROR-A2 SEARCH-SIZE=5 1 5.0S 10 1 1 ONBOARD ACQ FOR FAINT=1900 1.001 Comments: STEP-TIME=0.2 SEC ------------------------------------------------------------------------------------------------------------------------------------ 1.001 HD141556 HRS ACQ/ 2.0 MIRROR-A2 1 73.6S 10 1 1 ONBOARD ACQ FOR PEAKUP 1.002-113.000 Comments: STEP-TIME=1.6 SEC ------------------------------------------------------------------------------------------------------------------------------------ 1.002 HD141556 HRS IMAGE 2.0 MIRROR-A2 NX=32 1 102.4S 10 4 1 NY=16 DELTA-X=2 DELTA-Y=4 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD141556 HRS ACCUM 2.0 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 CYCLE 1 / 1.000- 113.000 SEQ 2-113 NO GAP ------------------------------------------------------------------------------------------------------------------------------------ 3 HD141556 HRS ACCUM 2.0 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 12 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 ------------------------------------------------------------------------------------------------------------------------------------ 13 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 22 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG -0.125, 0.0 / 22-23 ------------------------------------------------------------------------------------------------------------------------------------ 23 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 32 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG -0.125, 0.125 / 32-33 ------------------------------------------------------------------------------------------------------------------------------------ 33 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 42 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG 0.0,0.125 / 42-43 ------------------------------------------------------------------------------------------------------------------------------------ 43 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 52 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG 0.125, 0.125 / 52-53 ------------------------------------------------------------------------------------------------------------------------------------ 53 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 62 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG 0.125,0.0 / 62-63 ------------------------------------------------------------------------------------------------------------------------------------ 63 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 72 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG 0.125,- 0.125 / 72-73 ------------------------------------------------------------------------------------------------------------------------------------ 73 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3374c [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 82 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG 0.0,- 0.125 / 82-83 ------------------------------------------------------------------------------------------------------------------------------------ 83 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 92 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG -0.125,- 0.125 / 92-93 ------------------------------------------------------------------------------------------------------------------------------------ 93 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 102 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG -0.250, 0.0 / 102-103 ------------------------------------------------------------------------------------------------------------------------------------ 103 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ 112 HD141556 HRS ACCUM 0.25 MIRROR-A2 STEP-PATT=4 1 14.4S 100 4 1 POS TARG 0.25,0.0 / 112-113 ------------------------------------------------------------------------------------------------------------------------------------ 113 HD141556 HRS ACCUM 0.25 G160M 1868 STEP-PATT=4 1 14.4S 100 3 1 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 3374c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HRS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACQ/PEAKUP IMAGE ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SEARCH-SIZE=5 FAINT=1900 NX=32 NY=16 DELTA-X=2 DELTA-Y=4 STEP-PATT=4 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for CAL/HRS ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 1.39 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 1.001; ONBOARD ACQ FOR 1.002-113.000; CYCLE 1 / 1.000-113.000; SEQ 2-113 NO GAP POS TARG -0.125,0.0 / 22-23 POS TARG -0.125,0.125 / 32-33 POS TARG 0.0,0.125 / 42-43 POS TARG 0.125,0.125 / 52-53 POS TARG 0.125,0.0 / 62-63 POS TARG 0.125,-0.125 / 72-73 POS TARG 0.0,-0.125 / 82-83 POS TARG -0.125,-0.125 / 92-93 POS TARG -0.250,0.0 / 102-103 POS TARG 0.25,0.0 / 112-113 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR-A2 G160M ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD141556 CHI-LUP ------------------------------------------------------------------------------------------------------------------------------------