Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 1417c Report Date: 09-May-96:16:39 Version: ********** Check-in Date: ********** 1.Proposal Title: CROSS FILTER CALIBRATION AST-SV-6 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID SV/AST 1417 Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone William H. Jefferys UNIVERSITY OF TEXAS USA 512-471-3000 X PROFESSOR ------------------------------------------------------------------------------------ 7. Abstract The goal of this procedure is to determine the positional offsets produced by the FGS filters, and to determine any distortions produced by the individual filters. Values of these parameters will be entered into the STScI database for SDAS reduction of FGS data. ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 5.62 par: 0 10. Num targs pri: 9 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FGS ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 1417c PI: William H. Jefferys Proposal Title: CROSS FILTER CALIBRATION AST-SV-6 ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ Astrometry Sci Team ------------------------------------------------------------------------------------ 2. Scientific Justification. Many astrometric observations require the use of filters other than the "yellow" filter. In some cases the filters will be changed between settings on the stars in the same field. Therefore, the effects as a function of position for different filters must be known. ------------------------------------------------------------------------------------ 3. Description of proposed observations. 1) Position ST so that there are 6-9 stars in FGS 3 in the appropriate magnitude range. 2) Using PUPIL, scan stars to certify singularity. This may be done before or after the POS mode. 3) measure 6-9 stars in POS mode, with filter PUPIL. 4) Change filter to F583W. 5) Repeat step 3 with F583W. 6) Change filter to F605W. 7) Repeat step 3 using F605W 8) Change filter to F5ND. 9) Repeat step 3 using F5ND. 10) Change filter to F550W 11) Repeat step 2 using F550W Note: As with AST-02 (Proposals 1567-9) the number of stars actually in the FGS FOV is a function of date and HST orientation. Only those stars in the FOV are to be observed. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. GB observations are only good to .01 arcsec at best; we need 6-9 stars in magnitude range of overlap between ALL filters. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. SV PREREQUISITES: NONE ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. ADRS within SDAS will be used to analyse the data, in particular to fit the data from one filter-FGS to the "yellow" filter data for that FGS. AST-SV-2 will produce the distortion coefficients for each FGS-yellow filter position. The data will be fit with increasing order polynomials until the 0.002 arcsec rms residual level is reached. The simplest model (constant offset) will be assumed to start. The terms, and their derived values, for each filter will be part of the data bases accessable to reduction procedures. This proposal depends on AST_OV-3 and AST_OV_4. The results will be incorporated in the CDB to be used by SDAS to hold parameters used in the reductions for differences between filters. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. All FGS numbers refer to BAY numbers. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). ADRS will be available in Austin to reduce and analyse the data. Some AST personnel will be available at STScI or GSFC during SV in support of this test. ------------------------------------------------------------------------------------ 11. Address Information Page 3 Name: WILLIAM JEFFREYS Category: PI Institution: UNIV OF TEXAS Address: City: State: Zip Code: Country: USA Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ Name: WILLIAM VAN ALTENA Category: CON Institution: YALE ASTRONOMY DEPT Address: P.O. BOX 6666 260 WHITNEY AVE City: NEW HAVEN State: CT Zip Code: 06671 Country: USA Telephone: 203-432-3020 Telex (or e-mail): ------------------------------------------------------------------------------------ Name: OTTO FRANZ Category: CON Institution: LOWELL OBS Address: P.O. BOX 1269 City: FLAGSTAFF State: AZ Zip Code: 86002 Country: USA Telephone: 602-774-3358 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 1417c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 100 PCEN3532 J,701 RA=11H 02M 43.835S +/- 1", 1950 1 V=9.0 +/- 0.5 DEC=-58D 25'16.8" +/- 1" Comments: THIS TARGET IS GIVEN SOLELY TO ESTABLISH THE POINTING FOR THE CENTER OF THE FGS FOV AND DOES NOT CORRESPOND TO A STAR THAT IS TO BE MEASURED. ------------------------------------------------------------------------------------------------------------------------------------ 101 FIL192-REF J,701 RA-OFF=-1.85S +/- .13S, 1950 1 V=9.6 +/- 0.5 DEC-OFF=-95.0" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 102 FIL193-REF J,701 RA-OFF=+5.98S +/- .13S, 1950 1 V=10.5 +/- 0.5 DEC-OFF=-100.2" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 103 FIL194-REF J,701 RA-OFF= +21.24S +/- .13S, 1950 1 V=9.8 +/- 0.5 DEC-OFF=-43.9" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 104 FIL195-REF J,701 RA-OFF= +22.98S +/- .13S, 1950 1 V=10.3 +/- 0.5 DEC-OFF=+20.4" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 105 FIL196-REF J,701 RA-OFF= -11.58S +/- .13S, 1950 1 V=9.2 +/- 0.5 DEC-OFF=-40.2" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 106 FIL197-REF J,701 RA-OFF= -12.29S +/- .13S, 1950 1 V=9.7 +/- 0.5 DEC-OFF=-15.6" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 107 FIL199-REF J,701 RA-OFF= -22.57S +/- .13S, 1950 1 V=9.7 +/- 0.5 DEC-OFF=+20.7" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 108 FIL200-REF J,701 RA-OFF= +10.20S +/- .13S, 1950 1 V=9.1 +/- 0.5 DEC-OFF=+91.0" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ 109 FIL201-REF J,701 RA-OFF= -6.29S +/- .13S, 1950 1 V=12.2 +/- 0.5 DEC-OFF=+118.0" +/-1", FROM 100 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 1417c [ 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 FIL192-REF FGS TRANS 3 PUPIL DATA-RATE=32 1 50S 1 1 DO FOR TARG 101- TSCAN SCANS=4 109 STEP-SIZE=2.0 ACQ-DIST=10 ------------------------------------------------------------------------------------------------------------------------------------ 2 DEFINE FIL192-REF FGS POS # # DATA-RATE=32 1 51.2S # DO FOR TARG 101- XFIL ACQ-DIST=10 109 SEQ 2-3 NO GAP ------------------------------------------------------------------------------------------------------------------------------------ 3 DEFINE FIL192-REF FGS POS # # DATA-RATE=32 1 51.2S # XFIL ACQ-DIST=10 ------------------------------------------------------------------------------------------------------------------------------------ 110 PCEN3532 FGS POS 3 PUPIL DATA-RATE=32 1 0M 1 CYCLE 2 / 1.00- ACQ-DIST=10 121.0 ------------------------------------------------------------------------------------------------------------------------------------ 111 USE 3 PUPIL 1 SEQ 110-115 NO GAP XFIL SAME POS FOR 111- 115 AS 110 Comments: DO FOR ALL TARGETS IN THE FOV. ------------------------------------------------------------------------------------------------------------------------------------ 112 USE 3 F583W 1 XFIL ------------------------------------------------------------------------------------------------------------------------------------ 113 USE 3 F605W 1 XFIL ------------------------------------------------------------------------------------------------------------------------------------ 114 USE 3 F5ND 1 XFIL ------------------------------------------------------------------------------------------------------------------------------------ 115 USE 3 F550W 1 XFIL ------------------------------------------------------------------------------------------------------------------------------------ 120 PCEN3532 FGS POS 3 PUPIL DATA-RATE=32 1 0M 1 GROUP 120,110 ACQ-DIST=10 WITHIN 4D ------------------------------------------------------------------------------------------------------------------------------------ 121 USE SEQ 120-121 NO GAP TSCAN SAME POS FOR 121 AS 120 Comments: DO FOR ALL TARGETS IN THE FOV. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 1417c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes TRANS POS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters DATA-RATE=32 SCANS=4 STEP-SIZE=2.0 ACQ-DIST=10 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for SV/AST ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 5.62 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements DO FOR TARG 101-109; SEQ 2-3 NO GAP; CYCLE 2 / 1.00-121.0; SEQ 110-115 NO GAP; SAME POS FOR 111-115 AS 110; GROUP 120,110 WITHIN 4D; SEQ 120-121 NO GAP; SAME POS FOR 121 AS 120; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements PUPIL # F583W F605W F5ND F550W ------------------------------------------------------------------------------------------------------------------------------------ Target Names PCEN3532 FIL192-REF FIL193-REF FIL194-REF FIL195-REF FIL196-REF FIL197-REF FIL199-REF FIL200-REF FIL201-REF ------------------------------------------------------------------------------------------------------------------------------------