6768( 7) - 08/01/97 10:53 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6768 Version: 7 Check-in Date: 01-Aug-1997 10:52:18 1.Proposal Title: Continuation of An Astrometric Search for Planetary Companions to Proxima Centauri ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle COOL STARS GO 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: G. Fritz Benedict UNIVERSITY OF TEXAS CoI: Peter Shelus University of Texas N CoI: Paul Hemenway University of Texas N CoI: William Cochran University of Texas N CoI: William van Altena Yale University N CoI: Raynor Duncombe University of Texas N CoI: Laurence Fredrick University of Virginia N CoI: William Jefferys University of Texas N CoI: Barbara McArthur University of Texas N CoI: Artie Hatzes University of Texas N CoI: Howard Coleman Quadralay Corp. N CoI: Otto Franz Lowell Observatory N CoI: Art Whipple University of Texas N ------------------------------------------------------------------------------------ 6. Abstract We propose to extend our astrometric monitoring of Proxima Centauri by acquiring ten additional measurement sets during Cycle 6. These observations will further reduce the upper mass limit of undetected planets for periods of less than 600 days. They will reduce the probability of false positive detection for a suspected perturbation with a period near 80 days. The Proxima Cen observations will be combined with results from an ongoing radial velocity monitoring program. As of 9/95 radial velocities suggest a perturbation with a period near 90 days. If real, the astrometric and radial velocity perturbations could be due to a gas giant planet orbiting Proxima Centauri, potentially one of the most exciting discoveries to be made in astronomy. The combined Cycle 6 astrometry and additional velocity data will allow us to determine the inclination of the planetary system and a mass for the planet. ------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 2] Observations Description ------------------------ An observation set consists of POS mode observations of, in turn, Proxima Cen, drift check star, four reference stars, Proxima Cen, drift check star, four more reference stars, drift check star, and finally, Proxima Cen. This sequence will be extended to fill up an entire orbit, the unit of time accounting. Five observation sets (one orbit each) will be scheduled near predicted maximum perturbation, assuming the 94 day radial velocity period. Real Time Justification ----------------------- None required, unless Engineering tape recorder problem requires real-time links. Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: GF BENEDICT, MCDONALD OBS, UTEXAS, AUSTIN, TX 78712 Ship Via: UPS Email: fritz@clyde.as.utexas.edu ------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 11 PROXIMA- STAR,M V-IV RA=14H 29M 43.003S +/- J2000 V = 11.02+/-0.1 CENTAURI 0.276S,DEC=-62D 40' 46.14" +/- 4.14" Comments: NEAREST STAR M DWARF STAR 15 IN GFB LIST Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) J2000 -0.5462670000000002 0.7999999999999999 0.78 13 PROXCEN-3- CALIBRATION,ASTROMETRIC RA=14H 29M 55.664S +/- J2000 V = 15.1+/-0.07 REF 0.276S,DEC=-62D 41' 21.28" +/- 4.14" Comments: STAR 17 IN GFB LIST 15 PROXCEN-5- CALIBRATION,ASTROMETRIC RA=14H 29M 44.491S +/- J2000 V = 14.36+/-0.1 REF 0.276S,DEC=-62D 41' 28.8" +/- 4.14" Comments: STAR 19 IN GFB LIST 16 PROXCEN-6- CALIBRATION,ASTROMETRIC RA=14H 29M 56.659S +/- J2000 V = 14.58+/-0.09 REF 0.276S,DEC=-62D 39' 44.54" +/- 4.14" Comments: STAR 22 IN GFB LIST 18 PROXCEN-8- CALIBRATION,ASTROMETRIC RA=14H 29M 40.875S +/- J2000 V = 15.14+/-0.05 REF 0.276S,DEC=-62D 41' 41.45" +/- 4.14" Comments: STAR 28 GFB LIST 19 PROXCEN-10- CALIBRATION,ASTROMETRIC RA=14H 29M 29.567S +/- J2000 V = 14.3+/-0.11 REF 0.276S,DEC=-62D 39' 45.63" +/- 4.14" Comments: PROXIMA-CEN REF STAR STAR 37 GFB LIST 20 PROXCEN-11- CALIBRATION,ASTROMETRIC RA=14H 29M 29.423S +/- J2000 V = 14.43+/-0.09 REF 0.276S,DEC=-62D 40' 2.34" +/- 4.14" Comments: PROXIMA-CEN REF STAR STAR 38 GFB LIST 6768( 7) - 08/01/97 10:53 - [ 4] Visit: 01 Visit Requirements: BETWEEN 30-Aug-1996 AND 11-Sep-1996 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 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 20 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 PROXCEN-3-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 50 PROXCEN-6-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 60 PROXIMA-CEN FGS POS 3 F583W 1 120 S GROUP-FGS 10-110 WITHIN TAURI 96M SEQ 10-110 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 70 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 PROXCEN-8-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 100 PROXCEN-11- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 108 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 109 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 110 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 6] Visit: 02 Visit Requirements: BETWEEN 16-Oct-1996 AND 25-Oct-1996 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 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 20 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 PROXCEN-3-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 50 PROXCEN-6-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 60 PROXIMA-CEN FGS POS 3 F583W 1 120 S GROUP-FGS 10-110 WITHIN TAURI 96M SEQ 10-110 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 70 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 PROXCEN-8-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 100 PROXCEN-11- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 7] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 108 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 109 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 110 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 8] Visit: 03 Visit Requirements: BETWEEN 11-SEP-97 AND 18-SEP-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 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 20 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 PROXCEN-3-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 50 PROXCEN-6-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 60 PROXIMA-CEN FGS POS 3 F583W 1 120 S GROUP-FGS 10-110 WITHIN TAURI 96M SEQ 10-110 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 70 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 PROXCEN-8-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 100 PROXCEN-11- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 9] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 108 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 109 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 110 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 10] Visit: 04 Visit Requirements: BETWEEN 15-Apr-1997 AND 25-Apr-1997 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 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 20 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 PROXCEN-3-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 50 PROXCEN-6-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 60 PROXIMA-CEN FGS POS 3 F583W 1 120 S GROUP-FGS 10-110 WITHIN TAURI 96M SEQ 10-110 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 70 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 PROXCEN-8-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 100 PROXCEN-11- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 11] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 108 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 109 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 110 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 12] Visit: 05 Visit Requirements: BETWEEN 08-OCT-1997 AND 16-OCT-1997 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 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 20 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 30 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 40 PROXCEN-3-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 50 PROXCEN-6-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 60 PROXIMA-CEN FGS POS 3 F583W 1 120 S GROUP-FGS 10-110 WITHIN TAURI 96M SEQ 10-110 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 70 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 80 PROXCEN-8-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 90 PROXCEN-10- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 100 PROXCEN-11- FGS POS 3 F583W 1 52 S REF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 13] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 108 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 109 PROXCEN-5-R FGS POS 3 F583W 1 52 S EF Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ------------------------------------------------------------------------------------------------------------------------------------ 110 PROXIMA-CEN FGS POS 3 F583W 1 120 S TAURI ------------------------------------------------------------------------------------------------------------------------------------ 6768( 7) - 08/01/97 10:53 - [ 14] Summary Form for Proposal 6768 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FGS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes POS ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 30-Aug-1996 AND 11-Sep-1996 GROUP-FGS 10-110 WITHIN 96M SEQ 10-110 NON-INT BETWEEN 16-Oct-1996 AND 25-Oct-1996 BETWEEN 11-SEP-97 AND 18-SEP-97 BETWEEN 15-Apr-1997 AND 25-Apr-1997 BETWEEN 08-OCT-1997 AND 16-OCT-1997 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F583W ------------------------------------------------------------------------------------------------------------------------------------ Target Names PROXIMA-CENTAURI PROXCEN-5-REF PROXCEN-10-REF PROXCEN-3-REF PROXCEN-6-REF PROXCEN-8-REF PROXCEN-11-REF ------------------------------------------------------------------------------------------------------------------------------------