Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 2992c Report Date: 09-May-96:17:48 Version: ********** Check-in Date: ********** 1.Proposal Title: FULL APERTURE LOCK TEST ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID OV/2 Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone William H. Jefferys TEXAS, UNIVERSITY OF USA 512-471-1455 PROFESSOR ------------------------------------------------------------------------------------ 7. Abstract These data are intended to achieve fine lock with the full OTA aperture. The objective is to perform fine lock and then obtain a transfer function scan of the same star in all three FGS's. The purpose of the transfer function scan is to determine uplink parameters and to determine the S-curve characteristic in case of fine lock failure. ------------------------------------------------------------------------------------ 8. Scientific Key Words: FGS, ASTROMETRY ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 4.00 par: 0 10. Num targs pri: 4 par: 0 ------------------------------------------------------------------------------------ 11. Instruments requested: FGS ------------------------------------------------------------------------------------ 12. Special sched req: Time Critical obs. ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 2992c PI: William H. Jefferys Proposal Title: FULL APERTURE LOCK TEST ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ William H. Jefferys TEXAS, UNIVERSITY OF USA Peter J. Shelus TEXAS, UNIVERSITY OF USA Paul D. Hemenway TEXAS, UNIVERSITY OF USA Laurence W. Fredrick VIRGINIA, UNIVERSITY OF USA William F. Van Altena YALE UNIVERSITY USA George F. Benedict TEXAS, UNIVERSITY OF USA Raynor L. Duncombe TEXAS, UNIVERSITY OF USA Otto G. Franz LOWELL OBSERVATORY USA ------------------------------------------------------------------------------------ 2. Scientific Justification. These data are intended to achieve fine lock with the full OTA aperture. The objective is to perform fine lock and then obtain a transfer function scan of the same star in all three FGS's. The purpose of the transfer function scan is to determine uplink parameters and to determine the S-curve characteristic in case of fine lock failure. The derived uplink parameters will be examined prior to the through-focus test. ------------------------------------------------------------------------------------ 3. Description of proposed observations. a) Attempt fine lock on a star in NGC188 in FGS2. b) Obtain a transfer function scan of that star in FGS2. a) Attempt fine lock on a star in NGC188 in FGS1. b) Obtain a transfer function scan of that star in FGS1. a) Attempt fine lock on a star in NGC188 in FGS3. b) Obtain a transfer function scan of that star in FGS3. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. The desired K1X, K1Y for the three FGS's will be determined by HDOS and supplied Friday AM 7/20. ------------------------------------------------------------------------------------ 6. Description of special calibration exposures. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. ------------------------------------------------------------------------------------ 8. Additional comments or special requests. The desired K1X, K1Y for the three FGS's will be determined by HDOS and supplied Friday AM 7/20. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). ------------------------------------------------------------------------------------ 11. Address Information Name: WILLIAM H. JEFFERYS Category: PI Institution: TEXAS, UNIVERSITY OF Address: City: State: Zip Code: Country: Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ Page 3 Name: GEORGE F. BENEDICT Category: CON Institution: UNIVERSITY OF TEXAS Address: ASTRONOMY DEPARTMENT City: AUSTIN State: TX Zip Code: 78712 Country: USA Telephone: 512-471-3448 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 2992c [ 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| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 2 UPGREN-69 STAR IN NGC188 RA=00H 37M 51.90S +/- 0.5S, 1950 1 V=9.58 +/-0.05 DEC=+84D 57' 47.8" +/- 0.5S 2 B=10.08 +/-0.07 ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 2992c [ 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 UPGREN-69 FGS POS # F583W FES-TIME=0.025 1 1M 1 1 NON-INT AST DATA-RATE=32 Comments: FINE LOCK ATTEMPT AT FULL APERTURE ------------------------------------------------------------------------------------------------------------------------------------ 2 DEFINE UPGREN-69 FGS TRANS # F583W STEP-SIZE=1.0 1 50S 1 1 NON-INT TF DATA-RATE=32 SCANS=1 ACQ-MODE=SEARCH Comments: TRANSFER FUNCTION AT FULL APERTURE USE DATA-RATE = 32 ------------------------------------------------------------------------------------------------------------------------------------ 11 USE AST 2 SAME POS FOR 12 AS 11 SEQ 11-12 NO GAP Comments: DESIRED K1X,K1Y FOR FGS2 TO BE DETERMINED BY HDOS FRIDAY AM 7/ 20/90 ------------------------------------------------------------------------------------------------------------------------------------ 12 USE TF 2 Comments: USE SAME K1X,K1Y AS ABOVE FOR FGS2 ------------------------------------------------------------------------------------------------------------------------------------ 21 USE AST 1 SAME POS FOR 22 AS 21 SEQ 21-22 NO GAP Comments: DESIRED K1X,K1Y FOR FGS1 TO BE DETERMINED BY HDOS FRIDAY AM 7/ 20/90 ------------------------------------------------------------------------------------------------------------------------------------ 22 USE TF 1 Comments: USE SAME K1X,K1Y AS ABOVE FOR FG1 ------------------------------------------------------------------------------------------------------------------------------------ 31 USE AST 3 SAME POS FOR 32 AS 31 SEQ 31-32 NO GAP Comments: DESIRED K1X,K1Y FOR FGS3 TO BE DETERMINED BY HDOS FRIDAY AM 7/ 20/90 ------------------------------------------------------------------------------------------------------------------------------------ 32 USE TF 3 Comments: USE SAME K1X,K1Y AS ABOVE FOR FGS3 ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 2992c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes POS TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FES-TIME=0.025 DATA-RATE=32 STEP-SIZE=1.0 SCANS=1 ACQ-MODE=SEARCH ------------------------------------------------------------------------------------------------------------------------------------ Proposal for OV/2 ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 4.00 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements NON-INT SAME POS FOR 12 AS 11; SEQ 11-12 NO GAP SAME POS FOR 22 AS 21; SEQ 21-22 NO GAP SAME POS FOR 32 AS 31; SEQ 31-32 NO GAP ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F583W ------------------------------------------------------------------------------------------------------------------------------------ Target Names UPGREN-69 ------------------------------------------------------------------------------------------------------------------------------------