Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 3886c Report Date: 09-May-96:18:54 Version: ********** Check-in Date: ********** 1.Proposal Title: ORBITAL PARAMETER OF KNOWN BINARY, SEQUEL ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID STELLAR ASTROPHYSICS GTO/AST 3 Long Term yrs 3061 Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone William H. Jefferys TEXAS, UNIVERSITY OF USA 512-471-4461 PROF OF ASTRONOMY ------------------------------------------------------------------------------------ 7. Abstract We propose to use FGS in TRANSFER mode to observe the close known binary ADS11300. According to an orbital analysis incorporating recent HST-FGS results, this pair of 54 orbital period is expected to pass through periastron in 1992.1 +/- 0.6 and should reach a component separation of less than 10 mas. Measurement at this angular separation is not possible by any ground-based technique, and HST observation provides the only opportunity to obtain astrometric data at this critical orbital phase. ------------------------------------------------------------------------------------ 8. Scientific Key Words: S-CURVE MEASUREMENT ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 15.00 par: 0 10. Num targs pri: 15 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 3886c PI: William H. Jefferys Proposal Title: ORBITAL PARAMETER OF KNOWN BINARY, SEQUEL ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ William H. Jefferys TEXAS, UNIVERSITY OF USA Otto G. Franz LOWELL OBSERVATORY USA Edmund P. Nelan STSCI USA ------------------------------------------------------------------------------------ 3. Description of proposed observations. A) Acquire brightest available Guide Stars in FGS 1 and 2 in fine lock. 1) Perform transfer scans in FGS3 with the clear aperture at pickle center. 2) Repeat 1 with the 2/3 aperture. B) Go to next target and repeat A within 10 days. C) Repeat A and B every 3 months for a total of 6 iterations. ------------------------------------------------------------------------------------ 5. Description of special scheduling requirements. The bright binary pair as been observed before using the PUPIL. We propose to add the F583W for an enhanced angular resolution. The reference star has been observed before. By continuing to re-observe it shortly before or after revisits to the binary star, any temporal changes (non-repeatability) due to HST-FGS will become known and can be removed during analysis. ------------------------------------------------------------------------------------ 7. Data reduction and analysis plans. Initial data reduction and analysis will be carried out with the use of algorithms and software developed by STAT. Such reductions and analyses will require the use of data processing facilities both at STScI and at the home institutions of STAT members. ------------------------------------------------------------------------------------ 10. Resources to be supplied by investigator's institution(s). Computer facilities at STAT members' institutions. ------------------------------------------------------------------------------------ 11. Address Information Name: WILLIAM H. JEFFERYS Category: PI Institution: UNIVERSITY OF TEXAS Address: ASTRONOMY DEPARTMENT City: AUSTIN State: TX Zip Code: 78712 Country: USA Telephone: 512-471-3000 Telex (or e-mail): TEXASTRO ------------------------------------------------------------------------------------ Name: EDMUND P. NELAN Category: CON Institution: UNIVERSITY OF TEXAS Address: STSCI 3700 SAN MARTIN DRIVE City: BALTIMORE State: MD Zip Code: 21218 Country: USA Telephone: 301-338-7870 Telex (or e-mail): ------------------------------------------------------------------------------------ Page 3 Name: OTTO G. FRANZ Category: CON Institution: LOWELL OBSERVATORY Address: MARS HILL ROAD 1400 WEST City: FLAGSTAFF State: AZ Zip Code: 86001 Country: USA Telephone: 602-774-3358 Telex (or e-mail): ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 3886c [ 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 SAO103656 BINARY PAIR RA=18H 20M 38.81S +/- 0.1S, 1950 1 V=8.7 ADS11300 DEC=14D 56' 34.1" +/- 1" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B 1950.00 -0.0000 +/- 0.0000 0.0460 +/- 0.0030 0.0000 +/- 0.0000 ------------------------------------------------------------------------------------------------------------------------------------ 2 UPGREN69 REFERENCE STAR RA=9.46625D +/- .0004D, 1950 1 V=9.58 +/- 0.05 DEC=84.9632778D +/- .002D Comments: THIS STAR IS FOR REFERENCE TRANSFER SCANS ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 3886c [ 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 # FGS TRANS # # DATA-RATE=32 1 300S 1 1 TF1 STEP-SIZE=1.0 SCANS=10 ACQ-MODE=SEARCH Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 2 USE TF1 SAO103656 3 F583W SEQ 2-3 NO GAP POS TARG 0.0,0.0 SAME POS FOR 3 AS 2 REPEAT 2-5 EVERY 91D Comments: FINE LOCK GUIDING PLS SCHEDULE +/-45D FOR 6 MORE 1ST OBS AS EARLY IN 92 AS TIMES POSSIBLE (013 IF YOU CAN) CYCLE 1 GROUP 2-5 WITHIN 5D ------------------------------------------------------------------------------------------------------------------------------------ 3 USE TF1 ^ ^ PUPIL CYCLE 1 Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 4 USE TF1 UPGREN69 3 F583W SEQ 4-5 NO GAP POS TARG 0.0,0.0 SAME POS FOR 5 AS 4 CYCLE 1 Comments: FINE LOCK GUIDING PLS SCHEDULE 4-5 WITHIN 0-5D OF 2-3 ON EVERY SINGLE REPEAT. ------------------------------------------------------------------------------------------------------------------------------------ 5 USE TF1 ^ ^ PUPIL CYCLE 1 Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 3886c [ 6] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters DATA-RATE STEP-SIZE=1.0 SCANS=10 ACQ-MODE=SEARCH ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/AST ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 15.00 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SEQ 2-3 NO GAP; POS TARG 0.0,0.0 ; SAME POS FOR 3 AS 2 ; REPEAT 2-5 EVERY 91D +/-45D FOR 6 MORE TIMES ; CYCLE 1; GROUP 2-5 WITHIN 5D; CYCLE 1 SEQ 4-5 NO GAP; SAME POS FOR 5 AS 4 ; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements # F583W PUPIL ------------------------------------------------------------------------------------------------------------------------------------ Target Names SAO103656 ADS11300 UPGREN69 ------------------------------------------------------------------------------------------------------------------------------------