6925( 8) - 07/18/96 10:20 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6925 Version: 8 Check-in Date: 18-Jul-1996 10:12:59 1.Proposal Title: FOS OBSERVATIONS OF SOLAR ANALOG STANDARDS ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle COOL STARS CAL/OTA 6 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Luis Colina SPACE TELESCOPE SCIENCE INSTITUTE CoI: Ralph C. Bohlin Space Telescope Science Institute Y CoI: Stefano Casertano Space Telescope Science Institute N ------------------------------------------------------------------------------------ 6. Abstract We request FOS observations of three selected solar analog stars to obtain an accurate absolute spectrophotometry of faint red stars in the 2200A to 8500A wavelength range. These selected stars will be the primary standards for the absolute calibration of the near-infrared camera (NICMOS). The FOS spectra will be used in evaluating the accuracy of the method and assumptions behind the absolute calibration of NICMOS. The IDT proposed calibration is based on broad band photometry of these stars, which defines the absolute flux by assuming that the intrinsic spectra are identical to the solar spectrum. A detailed analysis of the differences in the spectral features and energy distribution of the selected G stars with respect to the reference spectrum of the Sun will be performed. So far, all HST standards are blue hot stars or white dwarfs with colors B-V < -0.1. The four selected G stars will then be converted into new HST standards and added to the current sample of HST absolute calibration standards. These new faint red (B-V ~ +0.65) G stars are needed in the calibration of the WFPC2 in order to measure broadband calibration differences for precisely known flux distributions for red stars, as well as the for blue stars that are currently used. Future HST spectrographs (STIS) can also make use of these red faint HST standards to measure levels of grating scattered parasitic light. ------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 2] Observations Description ------------------------ The FOS high dispersion gratings G270H, G400H, G570H and G780H with the red side detector will be used to cover the 2200A to 8500A wavelength range. The observations will be done with the 1" aperture and repeated a couple of times per target. The targets will be acquired with an acquisition strategy aimed to a final pointing accuracy of 0.05". The overhead for this acquisition strategy is one orbit, or less. Thus, a total of six orbits will be needed for the 6 independent target acquisitions. For stars P177D, and P330E, two orbits per visit will be needed for the observations. For the brightest star P041C, one orbit will allow to obtain good spectra in the different gratings. A total of 16 orbits for the whole project are required. Real Time Justification ----------------------- None. Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 3] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 P330E-CALIB CALIBRATION, RA = 16H 31M 33.85S +/- 0.1S, J2000 V = 13.1 Photometric DEC = +30D 08' 47.1" +/- 0.1", E(B-V) = 0.01 PLATE-ID=01G4 2 P041C-CALIB CALIBRATION, RA = 14H 51M 58.19S +/- 0.1S, J2000 V = 12.1 Photometric DEC = +71D 43' 17.3" +/- 0.1", E(B-V) = 0.01 PLATE-ID=01L5 3 P177D-CALIB CALIBRATION, RA = 15H 59M 13.59S +/- 0.1S, J2000 V = 13.6 Photometric DEC = +47D 36' 41.8" +/- 0.1", E(B-V) = 0.01 PLATE-ID=00T9 6925( 8) - 07/18/96 10:20 - [ 4] Visit: 01 Visit Requirements: BETWEEN 1-JUN-1996 AND 1-NOV-1996 AFTER 4 BY 15D 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 P330E-CALIB FOS/RD ACQ/BIN 4.3 MIRROR 1 1 S ONBOARD ACQ FOR 20 ARY ------------------------------------------------------------------------------------------------------------------------------------ 20 P330E-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.12,SCAN-STEP-X=0.12 1 2 S ONBOARD ACQ FOR 30 K ,SEARCH-SIZE-Y=4,SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ 30 P330E-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.052, 1 2 S ONBOARD ACQ FOR 40 K SCAN-STEP-X=0.052,SEARCH-SIZE-Y=3 ,SEARCH-SIZE-X=3 ------------------------------------------------------------------------------------------------------------------------------------ 40 P330E-CALIB FOS/RD ACCUM 1.0 G570H 1 100 S ------------------------------------------------------------------------------------------------------------------------------------ 50 P330E-CALIB FOS/RD ACCUM 1.0 G400H 1 150 S ------------------------------------------------------------------------------------------------------------------------------------ 60 P330E-CALIB FOS/RD ACCUM 1.0 G270H 1 2750 S ------------------------------------------------------------------------------------------------------------------------------------ 70 P330E-CALIB FOS/RD ACCUM 1.0 G780H 1 1500 S ------------------------------------------------------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 5] Visit: 02 Visit Requirements: BETWEEN 1-JUN-1996 AND 1-NOV-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 P177D-CALIB FOS/RD ACQ/BIN 4.3 MIRROR 1 1 S ONBOARD ACQ FOR 20 ARY ------------------------------------------------------------------------------------------------------------------------------------ 20 P177D-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.12,SCAN-STEP-X=0.12 1 4 S ONBOARD ACQ FOR 30 K ,SEARCH-SIZE-Y=4,SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ 30 P177D-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.052, 1 4 S ONBOARD ACQ FOR 40 K SCAN-STEP-X=0.052,SEARCH-SIZE-Y=3 ,SEARCH-SIZE-X=3 ------------------------------------------------------------------------------------------------------------------------------------ 40 P177D-CALIB FOS/RD ACCUM 1.0 G570H 1 120 S ------------------------------------------------------------------------------------------------------------------------------------ 50 P177D-CALIB FOS/RD ACCUM 1.0 G400H 1 180 S ------------------------------------------------------------------------------------------------------------------------------------ 60 P177D-CALIB FOS/RD ACCUM 1.0 G270H 1 3000 S ------------------------------------------------------------------------------------------------------------------------------------ 70 P177D-CALIB FOS/RD ACCUM 1.0 G780H 1 1500 S ------------------------------------------------------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 6] Visit: 03 Visit Requirements: BETWEEN 1-JUN-1996 AND 1-DEC-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 P041C-CALIB FOS/RD ACQ/PEA 4.3 G570H SCAN-STEP-Y=1.23,SEARCH-SIZE-X=1, 1 1 S ONBOARD ACQ FOR 20 K SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 20 P041C-CALIB FOS/RD ACQ/PEA 1.0 G570H SCAN-STEP-Y=0.61,SCAN-STEP-X=0.61 1 1 S ONBOARD ACQ FOR 30 K ,SEARCH-SIZE-Y=2,SEARCH-SIZE-X=6 ------------------------------------------------------------------------------------------------------------------------------------ 30 P041C-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.17,SCAN-STEP-X=0.17 1 1 S ONBOARD ACQ FOR 40 K ,SEARCH-SIZE-Y=5,SEARCH-SIZE-X=5 ------------------------------------------------------------------------------------------------------------------------------------ 40 P041C-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.07,SCAN-STEP-X=0.07 1 1 S ONBOARD ACQ FOR 50 K ,SEARCH-SIZE-Y=4,SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ 50 P041C-CALIB FOS/RD ACCUM 1.0 G570H 1 60 S ------------------------------------------------------------------------------------------------------------------------------------ 60 P041C-CALIB FOS/RD ACCUM 1.0 G780H 1 1800 S ------------------------------------------------------------------------------------------------------------------------------------ 70 P041C-CALIB FOS/RD ACCUM 1.0 G270H 1 2250 S ------------------------------------------------------------------------------------------------------------------------------------ 80 P041C-CALIB FOS/RD ACCUM 1.0 G400H 1 90 S ------------------------------------------------------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 7] Visit: 04 Visit Requirements: BETWEEN 1-JUN-1996 AND 1-DEC-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 P330E-CALIB FOS/RD ACQ/BIN 4.3 MIRROR 1 1 S ONBOARD ACQ FOR 20 ARY ------------------------------------------------------------------------------------------------------------------------------------ 20 P330E-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.12,SCAN-STEP-X=0.12 1 2 S ONBOARD ACQ FOR 30 K ,SEARCH-SIZE-Y=4,SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ 30 P330E-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.052, 1 2 S ONBOARD ACQ FOR 40 K SCAN-STEP-X=0.052,SEARCH-SIZE-Y=3 ,SEARCH-SIZE-X=3 ------------------------------------------------------------------------------------------------------------------------------------ 40 P330E-CALIB FOS/RD ACCUM 1.0 G570H 1 100 S ------------------------------------------------------------------------------------------------------------------------------------ 50 P330E-CALIB FOS/RD ACCUM 1.0 G400H 1 150 S ------------------------------------------------------------------------------------------------------------------------------------ 60 P330E-CALIB FOS/RD ACCUM 1.0 G270H 1 2750 S ------------------------------------------------------------------------------------------------------------------------------------ 70 P330E-CALIB FOS/RD ACCUM 1.0 G780H 1 1500 S ------------------------------------------------------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 8] Visit: 05 Visit Requirements: BETWEEN 1-JUN-1996 AND 1-NOV-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 P177D-CALIB FOS/RD ACQ/BIN 4.3 MIRROR 1 1 S ONBOARD ACQ FOR 20 ARY ------------------------------------------------------------------------------------------------------------------------------------ 20 P177D-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.12,SCAN-STEP-X=0.12 1 4 S ONBOARD ACQ FOR 30 K ,SEARCH-SIZE-Y=4,SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ 30 P177D-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.052, 1 4 S ONBOARD ACQ FOR 40 K SCAN-STEP-X=0.052,SEARCH-SIZE-Y=3 ,SEARCH-SIZE-X=3 ------------------------------------------------------------------------------------------------------------------------------------ 40 P177D-CALIB FOS/RD ACCUM 1.0 G570H 1 120 S ------------------------------------------------------------------------------------------------------------------------------------ 50 P177D-CALIB FOS/RD ACCUM 1.0 G400H 1 180 S ------------------------------------------------------------------------------------------------------------------------------------ 60 P177D-CALIB FOS/RD ACCUM 1.0 G270H 1 3000 S ------------------------------------------------------------------------------------------------------------------------------------ 70 P177D-CALIB FOS/RD ACCUM 1.0 G780H 1 1500 S ------------------------------------------------------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 9] Visit: 06 Visit Requirements: BETWEEN 1-JUN-1996 AND 1-DEC-1996 AFTER 3 BY 15D 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 P041C-CALIB FOS/RD ACQ/PEA 4.3 G570H SCAN-STEP-Y=1.23,SEARCH-SIZE-X=1, 1 1 S ONBOARD ACQ FOR 20 K SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 20 P041C-CALIB FOS/RD ACQ/PEA 1.0 G570H SCAN-STEP-Y=0.61,SCAN-STEP-X=0.61 1 1 S ONBOARD ACQ FOR 30 K ,SEARCH-SIZE-Y=2,SEARCH-SIZE-X=6 ------------------------------------------------------------------------------------------------------------------------------------ 30 P041C-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.17,SCAN-STEP-X=0.17 1 1 S ONBOARD ACQ FOR 40 K ,SEARCH-SIZE-Y=5,SEARCH-SIZE-X=5 ------------------------------------------------------------------------------------------------------------------------------------ 40 P041C-CALIB FOS/RD ACQ/PEA 0.3 G570H SCAN-STEP-Y=0.07,SCAN-STEP-X=0.07 1 1 S ONBOARD ACQ FOR 50 K ,SEARCH-SIZE-Y=4,SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ 50 P041C-CALIB FOS/RD ACCUM 1.0 G570H 1 60 S ------------------------------------------------------------------------------------------------------------------------------------ 60 P041C-CALIB FOS/RD ACCUM 1.0 G780H 1 1800 S ------------------------------------------------------------------------------------------------------------------------------------ 70 P041C-CALIB FOS/RD ACCUM 1.0 G270H 1 2250 S ------------------------------------------------------------------------------------------------------------------------------------ 80 P041C-CALIB FOS/RD ACCUM 1.0 G400H 1 90 S ------------------------------------------------------------------------------------------------------------------------------------ 6925( 8) - 07/18/96 10:20 - [ 10] Summary Form for Proposal 6925 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/RD ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/BINARY ACQ/PEAK ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters SCAN-STEP-Y=0.12 SCAN-STEP-X=0.12 SEARCH-SIZE-Y=4 SEARCH-SIZE-X=4 SEARCH-SIZE-X=3 SEARCH-SIZE-Y=3 SEARCH-SIZE-X=1 SEARCH-SIZE-X=6 SEARCH-SIZE-X=5 SCAN-STEP-X=0.07 SCAN-STEP-X=0.052 SCAN-STEP-Y=0.052 SCAN-STEP-Y=1.23 SEARCH-SIZE-Y=2 SEARCH-SIZE-Y=5 SCAN-STEP-Y=0.07 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category CAL/OTA ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category COOL STARS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 1-JUN-1996 AND 1-NOV-1996 AFTER 4 BY 15D ONBOARD ACQ FOR 20 ONBOARD ACQ FOR 30 ONBOARD ACQ FOR 40 BETWEEN 1-JUN-1996 AND 1-NOV-1996 BETWEEN 1-JUN-1996 AND 1-DEC-1996 ONBOARD ACQ FOR 50 BETWEEN 1-JUN-1996 AND 1-DEC-1996 AFTER 3 BY 15D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G570H G400H G270H G780H ------------------------------------------------------------------------------------------------------------------------------------ Target Names P330E-CALIB P177D-CALIB P041C-CALIB ------------------------------------------------------------------------------------------------------------------------------------