6039( 9) - 08/08/96 14:53 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6039 Version: 9 Check-in Date: 08-Aug-1996 14:47:19 1.Proposal Title: The Young, Rapidly-Evolving Planetary Nebula He 3-1357 ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle Interstellar Medium GO 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Matthew Bobrowsky CTA INCORPORATED CoI: M. Parthasarathy Indian Institute of Astrophysics N CoI: Kailash Sahu European Southern Observatory N CoI: Pedro Garcia-Lario ESA IUE Observatory N ------------------------------------------------------------------------------------ 6. Abstract He 3-1357 has apparently become a planetary nebula only within the last 40 years. IUE and ground-based observations have revealed that its spectrum changes noticeably over just a few years, showing stellar evolution ``caught in the act''. HST images resolved it for the first time (in Cycle 2) and we are now in a position to study both its spectral and morphological evolution. It is of crucial importance to determine whether the unique spectral changes observed in He 3-1357 are related to a sporadic episode of mass loss enhancement, or whether they constitute the evidence for continuous temporal evolution through the H-R diagram. We propose a combination of imaging and spectral observations, not only to derive the physical conditions and chemical abundances in the nebula, but also to investigate the stellar wind (which is known to be changing in time as well) and understand the characteristics of the central star. The extremely compact nature of He 3-1357 makes necessary the use of the high-resolution capabilities of HST to determine how the chemical abundances vary throughout the nebula. These results will be important not only for understanding this rapidly-changing object, but also for understanding the formation process of planetary nebulae in general and for testing the models trying to explain the early evolution of planetary nebulae. ------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 2] Observations Description ------------------------ We propose to obtain FOS spectra and WFPC2 narrowband images of He 3-1357 in order to understand the rapid changes in this object which have been detected. The planetary camera images will enable us to detect morphological changes, as well as identifying the spatial extent of various ions. Line fluxes from He 3- 1357 (Parthasarathy et al. 1993) were used to determine exposure times for PC images with narrow-band filters --- F588N, F631N, F487N, F502N, F656N, F658N, and F673N. As an example, filter F588N has a system throughput of 13%. The flux from He 3-1357 at 5877 Angstrom is 1.74 * 10^-12 erg cm^-2 s^-1 and, at this wavelength, the number of quanta per unit of energy is 2.95 * 10^11 photons erg^-1. The effective telescope collecting area is 3.9 * 10^4 cm^2. Multiplying all of these together and then dividing by the number of pixels (10^3) over which the target will be spread, yields 2.6 counts s^-1 pixel^-1. At this count rate, a S/N of 50 can be achieved in 16 min., i.e., in less than one orbit even with overhead and data readout. Images using all relevant WFPC2 filters can be acquired in five orbits. The FOS spectra, taken through the 0.3" aperture, cover important lines in the visible and UV. They will provide line intensities from which we will calculate abundances and the physical conditions in three different parts of the nebula indicated in Figure 1. With grating G130H, we will derive the temperature of the central star and study the stellar wind features of CIV 1550 Angstrom and SiIV 1400 Angstrom. The wavelength region covered by G190H will allow us to study the CIII 1909 Angstrom and He II 1640 Angstrom lines, as well as contributing to the flux distribution used to derive the central star temperature. Exposure times for FOS spectra were calculated using (a corrected version of) the first formula in Table 1.2.1 in the FOS handbook. As a sample exposure time calculation for a spectrum, consider the observation of one point in the equatorial ring of gas (Fig. 1) using grating G400H. The 0.3" aperture looks at ~3\\ from the nebula, which works out to be 1.5 * 10^-15 erg cm^-2 s^- 1 ang^-1. With grating G400H, the dispersion is 3 Angstrom diode^-1, the system efficiency is 0.04, and the throughput is 0.8. This results in a count rate of 1.64 counts diode^- 1. In this case, S/N=50 will be achieved in 26 min, i.e., less than one orbit, even with instrumental overhead and a target acquisition. The time needed for all FOS spectra is 10 orbits. Adding on the five WPFC2 orbits yields a total spacecraft time of 15 orbits. Real Time Justification ----------------------- No Special Requirements We plan to continue to monitor He 3-1357 using ground- based telescopes and IUE. Observations of He 3-1357 will be carried out at several epochs with IUE (next foreseen observations in September 1994 and April 1995). This observing time has recently been approved by the IUE Allocation Commitee. We also applied for observing time at La Silla but haven't yet heard the outcome. The observation of He 3-1357 is part of a wide program of observation of post- AGB stars and young PNe showing spectral changes. Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 3] Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 4] TARGET LIST a) Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HE3-1357- ISM,PLANETARY RA=17H 16M 21.104S +/- 0.01S, J2000 V = 10.95+/-0.2 OFFSET NEBULA,BIPOLAR OUTFLOW DEC=-59D 29' 21.30" +/- 0.1", B-V = -0.04+/-0.02 PLATE-ID=02F7 2 HE3-1357- ISM,PLANETARY NEBULA RA=17H 16M 21.054S +/- 0.01S, J2000 SURF(V) = 12.1+/-1.0 RING DEC=-59D 29' 21.01" +/- 0.1", PLATE-ID=02F7 3 HE3-1357- ISM,PLANETARY NEBULA RA=17H 16M 21.056S +/- 0.01S, J2000 SURF(V) = 12.4+/-1.0 SHELL DEC=-59D 29' 20.24" +/- 0.1", PLATE-ID=02F7 4 REV-HE3-1357 ISM,PLANETARY RA=17H 16M 20.9324S +/- 0.01S, J2000 V = 10.95+/-0.2 -OFFSET NEBULA,BIPOLAR OUTFLOW DEC=-59D 29' 23.408" +/- 0.1", B-V = -0.04+/-0.02 PLATE-ID=02F7 5 REV-HE3-1357 ISM,PLANETARY NEBULA RA=17H 16M 20.8899S +/- 0.01S, J2000 SURF(V) = 12.1+/-1.0 -RING DEC=-59D 29' 23.041" +/- 0.1", PLATE-ID=02F7 6 REV-HE3-1357 ISM,PLANETARY NEBULA RA=17H 16M 20.8583S +/- 0.01S, J2000 SURF(V) = 12.4+/-1.0 -SHELL DEC=-59D 29' 22.427" +/- 0.1", PLATE-ID=02F7 6039( 9) - 08/08/96 14:53 - [ 5] Visit: 01 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 101 HE3-1357-OF WFPC2 IMAGE PC1-FIX F658N CR-SPLIT=NO 1 3 M POS TARG -0.253, 0.253 FSET ------------------------------------------------------------------------------------------------------------------------------------ 102 HE3-1357-OF WFPC2 IMAGE PC1-FIX F487N CR-SPLIT=NO 1 3 M POS TARG -0.253, 0.253 FSET ------------------------------------------------------------------------------------------------------------------------------------ 103 HE3-1357-OF WFPC2 IMAGE PC1-FIX F502N CR-SPLIT=NO 1 16 S POS TARG -0.253, 0.253 FSET ------------------------------------------------------------------------------------------------------------------------------------ 104 HE3-1357-OF WFPC2 IMAGE PC1-FIX F588N CR-SPLIT=NO 1 300 S POS TARG -0.253, 0.253 FSET ------------------------------------------------------------------------------------------------------------------------------------ 105 HE3-1357-OF WFPC2 IMAGE PC1-FIX F656N CR-SPLIT=NO 1 60 S POS TARG -0.253, 0.253 FSET ------------------------------------------------------------------------------------------------------------------------------------ 111 HE3-1357-OF WFPC2 IMAGE PC1-FIX F656N CR-SPLIT=NO 1 60 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 112 HE3-1357-OF WFPC2 IMAGE PC1-FIX F502N CR-SPLIT=NO 1 16 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 113 HE3-1357-OF WFPC2 IMAGE PC1-FIX F487N CR-SPLIT=NO 1 3 M FSET ------------------------------------------------------------------------------------------------------------------------------------ 114 HE3-1357-OF WFPC2 IMAGE PC1-FIX F631N CR-SPLIT=NO 1 1100 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 115 HE3-1357-OF WFPC2 IMAGE PC1-FIX F673N CR-SPLIT=NO 1 1200 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 116 HE3-1357-OF WFPC2 IMAGE PC1-FIX F673N CR-SPLIT=NO 1 180 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 117 HE3-1357-OF WFPC2 IMAGE PC1-FIX F588N CR-SPLIT=NO 1 300 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 118 HE3-1357-OF WFPC2 IMAGE PC1-FIX F658N CR-SPLIT=NO 1 3 M FSET ------------------------------------------------------------------------------------------------------------------------------------ 121 HE3-1357-OF WFPC2 IMAGE PC1-FIX F658N CR-SPLIT=NO 1 3 M POS TARG 0.253, 0.759 FSET ------------------------------------------------------------------------------------------------------------------------------------ 122 HE3-1357-OF WFPC2 IMAGE PC1-FIX F502N CR-SPLIT=NO 1 16 S POS TARG 0.253, 0.759 FSET ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 123 HE3-1357-OF WFPC2 IMAGE PC1-FIX F502N CR-SPLIT=NO 1 2 S POS TARG 0.253, 0.759 FSET ------------------------------------------------------------------------------------------------------------------------------------ 124 HE3-1357-OF WFPC2 IMAGE PC1-FIX F487N CR-SPLIT=NO 1 3 M POS TARG 0.253, 0.759 FSET ------------------------------------------------------------------------------------------------------------------------------------ 125 HE3-1357-OF WFPC2 IMAGE PC1-FIX F588N CR-SPLIT=NO 1 300 S POS TARG 0.253, 0.759 FSET ------------------------------------------------------------------------------------------------------------------------------------ 126 HE3-1357-OF WFPC2 IMAGE PC1-FIX F656N CR-SPLIT=NO 1 60 S POS TARG 0.253, 0.759 FSET ------------------------------------------------------------------------------------------------------------------------------------ 131 HE3-1357-OF WFPC2 IMAGE PC1-FIX F487N CR-SPLIT=NO 1 3 M POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 132 HE3-1357-OF WFPC2 IMAGE PC1-FIX F631N CR-SPLIT=NO 1 1100 S POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 133 HE3-1357-OF WFPC2 IMAGE FQCH4N1 FQCH4N15 6211 CR-SPLIT=NO 1 19 M POS TARG 0.506, 0.506 FSET 5 ------------------------------------------------------------------------------------------------------------------------------------ 134 HE3-1357-OF WFPC2 IMAGE PC1-FIX F673N CR-SPLIT=NO 1 1100 S POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 135 HE3-1357-OF WFPC2 IMAGE PC1-FIX F658N CR-SPLIT=NO 1 3 M POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 136 HE3-1357-OF WFPC2 IMAGE PC1-FIX F588N CR-SPLIT=NO 1 400 S POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 137 HE3-1357-OF WFPC2 IMAGE PC1-FIX F502N CR-SPLIT=NO 1 16 S POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 138 HE3-1357-OF WFPC2 IMAGE PC1-FIX F502N CR-SPLIT=NO 1 2 M POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 139 HE3-1357-OF WFPC2 IMAGE PC1-FIX F656N CR-SPLIT=NO 1 60 S POS TARG 0.506, 0.506 FSET ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 7] Visit: 02 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 211 HE3-1357-OF FOS/RD ACQ/PEA 4.3 G190H SCAN-STEP-Y=1.204,SEARCH-SIZE-X=1 1 1 S ONBOARD ACQ FOR 212 FSET K ,SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 212 HE3-1357-OF FOS/RD ACQ/PEA 1.0 G190H SCAN-STEP-X=0.8,SCAN-STEP-Y=0.8, 1 1 S ONBOARD ACQ FOR 213 FSET K SEARCH-SIZE-X=6,SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 213 HE3-1357-OF FOS/RD ACQ/PEA 0.3 G190H SCAN-STEP-X=0.17,SCAN-STEP-Y=0.17 1 1 S ONBOARD ACQ FOR 214 FSET K ,SEARCH-SIZE-X=3,SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 214 HE3-1357-OF FOS/RD ACQ/PEA 0.3 G190H SCAN-STEP-X=0.052, 1 10 S ONBOARD ACQ FOR 215-243 FSET K SCAN-STEP-Y=0.052,SEARCH-SIZE-X=5 ,SEARCH-SIZE-Y=5 ------------------------------------------------------------------------------------------------------------------------------------ 215 HE3-1357-OF FOS/RD ACCUM 0.3 G190H 1 180 S FSET ------------------------------------------------------------------------------------------------------------------------------------ 216 HE3-1357-RI FOS/RD ACCUM 0.3 G190H 1 180 S NG ------------------------------------------------------------------------------------------------------------------------------------ 217 HE3-1357-SH FOS/RD ACCUM 0.3 G190H 1 180 S ELL ------------------------------------------------------------------------------------------------------------------------------------ 221 HE3-1357-SH FOS/RD ACCUM 0.3 G400H 1 14 M ELL ------------------------------------------------------------------------------------------------------------------------------------ 222 HE3-1357-RI FOS/RD ACCUM 0.3 G400H 1 13 M NG ------------------------------------------------------------------------------------------------------------------------------------ 223 HE3-1357-OF FOS/RD ACCUM 0.3 G400H 1 16 M FSET ------------------------------------------------------------------------------------------------------------------------------------ 231 HE3-1357-OF FOS/RD ACCUM 0.3 G570H 1 25 M FSET ------------------------------------------------------------------------------------------------------------------------------------ 232 HE3-1357-RI FOS/RD ACCUM 0.3 G570H 1 21 M NG ------------------------------------------------------------------------------------------------------------------------------------ 233 HE3-1357-SH FOS/RD ACCUM 0.3 G570H 1 22 M ELL ------------------------------------------------------------------------------------------------------------------------------------ 241 HE3-1357-SH FOS/RD ACCUM 0.3 G270H 1 24 M ELL ------------------------------------------------------------------------------------------------------------------------------------ 242 HE3-1357-RI FOS/RD ACCUM 0.3 G270H 1 30 M NG ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 243 HE3-1357-OF FOS/RD ACCUM 0.3 G270H 1 23 M FSET ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 9] Visit: 03 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 251 HE3-1357-OF FOS/BL ACQ/PEA 4.3 G130H SCAN-STEP-Y=1.204,SEARCH-SIZE-X=1 1 1.6 S ONBOARD ACQ FOR 252 FSET K ,SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 252 HE3-1357-OF FOS/BL ACQ/PEA 1.0 G130H SCAN-STEP-X=0.8,SCAN-STEP-Y=0.8, 1 1.6 S ONBOARD ACQ FOR 253 FSET K SEARCH-SIZE-X=6,SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 253 HE3-1357-OF FOS/BL ACQ/PEA 0.3 G130H SCAN-STEP-X=0.17,SCAN-STEP-Y=0.17 1 1.6 S ONBOARD ACQ FOR 254 FSET K ,SEARCH-SIZE-X=3,SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 254 HE3-1357-OF FOS/BL ACQ/PEA 0.3 G130H SCAN-STEP-X=0.052, 1 15 S ONBOARD ACQ FOR 261-263 FSET K SCAN-STEP-Y=0.052,SEARCH-SIZE-X=5 ,SEARCH-SIZE-Y=5 ------------------------------------------------------------------------------------------------------------------------------------ 261 HE3-1357-OF FOS/BL ACCUM 0.3 G130H 1 12 M FSET ------------------------------------------------------------------------------------------------------------------------------------ 262 HE3-1357-RI FOS/BL ACCUM 0.3 G130H 1 21 M NG ------------------------------------------------------------------------------------------------------------------------------------ 263 HE3-1357-SH FOS/BL ACCUM 0.3 G130H 1 21 M ELL ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 10] Visit: 52 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 211 REV-HE3-135 FOS/RD ACQ/PEA 4.3 G190H SCAN-STEP-X=3.33,SCAN-STEP-Y=1.23 1 2 S ONBOARD ACQ FOR 212 7-OFFSET K ,SEARCH-SIZE-X=2,SEARCH-SIZE-Y=6 ------------------------------------------------------------------------------------------------------------------------------------ 212 REV-HE3-135 FOS/RD ACQ/PEA 1.0 G190H SCAN-STEP-X=0.61,SCAN-STEP-Y=0.61 1 2 S ONBOARD ACQ FOR 213 7-OFFSET K ,SEARCH-SIZE-X=6,SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 213 REV-HE3-135 FOS/RD ACQ/PEA 0.5 G190H SCAN-STEP-X=0.29,SCAN-STEP-Y=0.29 1 2 S ONBOARD ACQ FOR 214 7-OFFSET K ,SEARCH-SIZE-X=3,SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 214 REV-HE3-135 FOS/RD ACQ/PEA 0.3 G190H SCAN-STEP-X=0.11,SCAN-STEP-Y=0.11 1 20 S ONBOARD ACQ FOR 215-243 7-OFFSET K ,SEARCH-SIZE-X=4,SEARCH-SIZE-Y=4 ------------------------------------------------------------------------------------------------------------------------------------ 215 REV-HE3-135 FOS/RD ACCUM 0.3 G190H 1 180 S 7-OFFSET ------------------------------------------------------------------------------------------------------------------------------------ 216 REV-HE3-135 FOS/RD ACCUM 0.3 G190H 1 180 S 7-RING ------------------------------------------------------------------------------------------------------------------------------------ 217 REV-HE3-135 FOS/RD ACCUM 0.3 G190H 1 180 S 7-SHELL ------------------------------------------------------------------------------------------------------------------------------------ 221 REV-HE3-135 FOS/RD ACCUM 0.3 G400H 1 14 M 7-SHELL ------------------------------------------------------------------------------------------------------------------------------------ 222 REV-HE3-135 FOS/RD ACCUM 0.3 G400H 1 13 M 7-RING ------------------------------------------------------------------------------------------------------------------------------------ 223 REV-HE3-135 FOS/RD ACCUM 0.3 G400H 1 16 M 7-OFFSET ------------------------------------------------------------------------------------------------------------------------------------ 231 REV-HE3-135 FOS/RD ACCUM 0.3 G570H 1 25 M 7-OFFSET ------------------------------------------------------------------------------------------------------------------------------------ 232 REV-HE3-135 FOS/RD ACCUM 0.3 G570H 1 21 M 7-RING ------------------------------------------------------------------------------------------------------------------------------------ 233 REV-HE3-135 FOS/RD ACCUM 0.3 G570H 1 22 M 7-SHELL ------------------------------------------------------------------------------------------------------------------------------------ 241 REV-HE3-135 FOS/RD ACCUM 0.3 G270H 1 24 M 7-SHELL ------------------------------------------------------------------------------------------------------------------------------------ 242 REV-HE3-135 FOS/RD ACCUM 0.3 G270H 1 30 M 7-RING ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 11] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 243 REV-HE3-135 FOS/RD ACCUM 0.3 G270H 1 23 M 7-OFFSET ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 12] Visit: 53 Visit Requirements: 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 ------------------------------------------------------------------------------------------------------------------------------------ 251 REV-HE3-135 FOS/BL ACQ/PEA 4.3 G130H SCAN-STEP-X=3.33,SCAN-STEP-Y=1.23 1 7 S ONBOARD ACQ FOR 252 7-OFFSET K ,SEARCH-SIZE-X=2,SEARCH-SIZE-Y=6 ------------------------------------------------------------------------------------------------------------------------------------ 252 REV-HE3-135 FOS/BL ACQ/PEA 1.0 G130H SCAN-STEP-X=0.61,SCAN-STEP-Y=0.61 1 7 S ONBOARD ACQ FOR 253 7-OFFSET K ,SEARCH-SIZE-X=6,SEARCH-SIZE-Y=2 ------------------------------------------------------------------------------------------------------------------------------------ 253 REV-HE3-135 FOS/BL ACQ/PEA 0.5 G130H SCAN-STEP-X=0.29,SCAN-STEP-Y=0.29 1 7 S ONBOARD ACQ FOR 254 7-OFFSET K ,SEARCH-SIZE-X=3,SEARCH-SIZE-Y=3 ------------------------------------------------------------------------------------------------------------------------------------ 254 REV-HE3-135 FOS/BL ACQ/PEA 0.3 G130H SCAN-STEP-X=0.11,SCAN-STEP-Y=0.11 1 70 S ONBOARD ACQ FOR 261-263 7-OFFSET K ,SEARCH-SIZE-X=4,SEARCH-SIZE-Y=4 ------------------------------------------------------------------------------------------------------------------------------------ 261 REV-HE3-135 FOS/BL ACCUM 0.3 G130H 1 12 M 7-OFFSET ------------------------------------------------------------------------------------------------------------------------------------ 262 REV-HE3-135 FOS/BL ACCUM 0.3 G130H 1 21 M 7-RING ------------------------------------------------------------------------------------------------------------------------------------ 263 REV-HE3-135 FOS/BL ACCUM 0.3 G130H 1 21 M 7-SHELL ------------------------------------------------------------------------------------------------------------------------------------ 6039( 9) - 08/08/96 14:53 - [ 13] Summary Form for Proposal 6039 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 FOS/RD FOS/BL ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ACQ/PEAK ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO SEARCH-SIZE-Y=3 SEARCH-SIZE-Y=2 SEARCH-SIZE-X=3 SEARCH-SIZE-Y=5 SEARCH-SIZE-X=1 SEARCH-SIZE-X=6 SCAN-STEP-Y=0.17 SEARCH-SIZE-X=5 SEARCH-SIZE-Y=6 SCAN-STEP-Y=0.61 SCAN-STEP-Y=0.29 SEARCH-SIZE-Y=4 SEARCH-SIZE-X=2 SCAN-STEP-X=0.61 SCAN-STEP-X=0.29 SEARCH-SIZE-X=4 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category Interstellar Medium ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG -0.253, 0.253 POS TARG 0.253, 0.759 POS TARG 0.506, 0.506 ONBOARD ACQ FOR 212 ONBOARD ACQ FOR 213 ONBOARD ACQ FOR 214 ONBOARD ACQ FOR 215-243 ONBOARD ACQ FOR 252 ONBOARD ACQ FOR 253 ONBOARD ACQ FOR 254 ONBOARD ACQ FOR 261-263 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F658N F487N F502N F588N F656N F631N F673N FQCH4N15 G190H G400H G570H G270H G130H ------------------------------------------------------------------------------------------------------------------------------------ Target Names HE3-1357-OFFSET HE3-1357-RING HE3-1357-SHELL REV-HE3-1357-OFFSET REV-HE3-1357-RING REV-HE3-1357-SHELL ------------------------------------------------------------------------------------------------------------------------------------