6240( 5) - 11/22/95 18:38 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6240 Version: 5 Check-in Date: ********** 1.Proposal Title: ORBITAL PARAMETER OF KNOWN BINARY, SEQUEL - FIXED ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle STELLAR ASTROPHYSICS GTO/AST 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: William Jefferys University of Texas CoI: Otto G. Franz Lowell Observatory N ------------------------------------------------------------------------------------ 6. Abstract We propose to use FGS in TRANS mode to observe the close known binary ADS11300. According to an orbital analysis incorporating recent HST-FGS results, this pair of 54-yr orbital period is expected to pass through periastron in 1996.25 +/- 0.75 and will reach a component separation of 10 mas. The proposed observations, in combination with two observations to be secured in Cycle 6, will provide a critical test of the angular-resolution limits achievable with FGS in the TRANS mode. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will observe ADS11300 during Cycle 5 to refine the orbital elements of this close pair now near periastron passage. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: O.G. Franz*Lowell Observatory*1400 W. Mars Hill Rd.*Flagstaff, AZ 86001 Ship Via: UPS Email: ogf@lowell.edu , ------------------------------------------------------------------------------------ 6240( 5) - 11/22/95 18:38 - [ 2] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SAO103656 STAR, RA=18H 20M 38.81S +/- 0.100S, B1950.00 V = 8.7 DEC=14D 56' 34.1" +/- 1.00" Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) B1950.00 -0.0004 0.046 0.0 6240( 5) - 11/22/95 18:38 - [ 3] Visit: 01 Visit Requirements: BETWEEN 1-AUG-1995:00:00:00 AND 30-SEP-1995:00:00:00; ORIENT -2D TO +2D FROM NOMINAL; SEQ 01-02 WITHIN 1ORBIT On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 SAO103656 FGS TRANS 3 F583W ACQ- 1 240S POS TARG 0.0, 0.0 MODE=SEARCH, SCANS=8, STEP- SIZE=1.0, DATA- RATE=32 Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6240( 5) - 11/22/95 18:38 - [ 4] Visit: 02 Visit Requirements: ORIENT +25D TO +35D FROM 01; SEQ 01-02 WITHIN 1ORBIT On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 SAO103656 FGS TRANS 3 PUPIL ACQ- 1 240S POS TARG 0.0, 0.0 MODE=SEARCH, SCANS=8, STEP- SIZE=1.0, DATA- RATE=32 Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6240( 5) - 11/22/95 18:38 - [ 5] Visit: 03 Visit Requirements: BETWEEN 1-FEB-1996:00:00:00 AND 10-APR-1996:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 SAO103656 FGS TRANS 3 F583W ACQ- 1 1440S POS TARG 0.0, 0.0 MODE=SEARCH, SCANS=48, STEP- SIZE=1.0, DATA- RATE=32 Comments: FINE LOCK GUIDING ------------------------------------------------------------------------------------------------------------------------------------ 6240( 5) - 11/22/95 18:38 - [ 6] Summary Form for Proposal 6240 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQ-MODE=SEARCH SCANS=8 STEP-SIZE=1.0 DATA-RATE=32 SCANS=48 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GTO/AST ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category STELLAR ASTROPHYSICS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 1-AUG-1995 00 00 00 AND 30-SEP-1995 00 00 00; ORIENT -2D TO +2D FROM NOMINAL; SEQ 01-02 WITHIN 1ORBIT POS TARG 0.0, 0.0 ORIENT +25D TO +35D FROM 01; SEQ 01-02 WITHIN 1ORBIT BETWEEN 1-FEB-1996 00 00 00 AND 10-APR-1996 00 00 00 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F583W PUPIL ------------------------------------------------------------------------------------------------------------------------------------ Target Names SAO103656 ------------------------------------------------------------------------------------------------------------------------------------