6883( 2) - 02/26/96 14:01 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6883 Version: 2 Check-in Date: 26-Feb-1996 13:48:31 1.Proposal Title: ORBITAL PARAMETERS OF KNOWN BINARY ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle COOL STARS GTO/AST 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: OTTO FRANZ LOWELL OBSERVATORY CoI: G. Fritz Benedict University of Texas 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 6 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: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6883( 2) - 02/26/96 14:01 - [ 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 -.0004 0.046 0.0 6883( 2) - 02/26/96 14:01 - [ 3] Visit: 01 Visit Requirements: PCS MODE Fine BETWEEN 4-AUG-96 AND 24-NOV-96 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 SCANS=16,STEP- 1 640S POS TARG 0.0, 0.0 SIZE=1.0 ------------------------------------------------------------------------------------------------------------------------------------ 20 SAO103656 FGS TRANS 3 PUPIL SCANS=18,STEP- 1 720S POS TARG 0.0, 0.0 SIZE=1.0 ------------------------------------------------------------------------------------------------------------------------------------ 6883( 2) - 02/26/96 14:01 - [ 4] Visit: 02 Visit Requirements: PCS MODE Fine BETWEEN 14-APR-97 AND 8-MAY-97 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 SCANS=16,STEP- 1 640S POS TARG 0.0, 0.0 SIZE=1.0 ------------------------------------------------------------------------------------------------------------------------------------ 20 SAO103656 FGS TRANS 3 PUPIL SCANS=18,STEP- 1 720S POS TARG 0.0, 0.0 SIZE=1.0 ------------------------------------------------------------------------------------------------------------------------------------ 6883( 2) - 02/26/96 14:01 - [ 5] Summary Form for Proposal 6883 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes TRANS ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SCANS=16 STEP-SIZE=1.0 SCANS=18 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GTO/AST ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PCS MODE Fine BETWEEN 4-AUG-96 AND 24-NOV-96 POS TARG 0.0, 0.0 PCS MODE Fine BETWEEN 14-APR-97 AND 8-MAY-97 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F583W PUPIL ------------------------------------------------------------------------------------------------------------------------------------ Target Names SAO103656 ------------------------------------------------------------------------------------------------------------------------------------