! 6056.prop: ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 6056,v 8.1 1995/09/12 16:08:27 pepsa Exp $ ! ! Refer to the HST Phase II Proposal Instructions to fill this out ! ! Anything after a "!" is ignored, and may be deleted ! ! All keywords with multiple entries are comma delimited except the ! Visit_Requirements and Special_Requirements keywords which can be ! delimited with carriage returns or semi-colons, but not commas ! ! For help call your Program Coordinator: Denise Taylor ! Phone: 410 338-4824 , E-mail: dctaylor@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sun Dec 18 11:46:38 EST 1994 ! Proposal_Information ! Section 4 Title: Spectroscopy and Imagery of the Orion Nebula Proposal_Category: GO Scientific_Category: Interstellar Medium Cycle: 5 Investigators PI_name: Robert Rubin PI_Institution: NASA AMES RESEARCH CENTER CoI_Name: Jack Baldwin CoI_Institution: CTIO Contact: ! Y or N (designate at most one contact) CoI_Name: Reginald Dufour CoI_Institution: RICE UNIVERSITY Contact: ! Y or N (designate at most one contact) CoI_Name: Gary Ferland CoI_Institution: UNIVERSITY OF KENTUCKY Contact: ! Y or N (designate at most one contact) CoI_Name: John Hester CoI_Institution: ARIZONA STATE UNIVERSITY Contact: ! Y or N (designate at most one contact) CoI_Name: Peter Martin CoI_Institution: UNIVERSITY OF TORONTO Contact: ! Y or N (designate at most one contact) CoI_Name: Charles O'Dell CoI_Institution: RICE UNIVERSITY Contact: ! Y or N (designate at most one contact) CoI_Name: Donald Walter CoI_Institution: SOUTH CAROLINA STATE U. Contact: ! Y or N (designate at most one contact) Abstract: Recent work has shown that nebular abundances can be in error by as much as a factor of five, possibly due to unexplained temperature fluctuations. We propose a broad program of observations of the benchmark Orion Nebula, with the common theme of understanding the origin of physical conditions on the microscopic scale within this well-observed nebula. We will determine abundances of refractory elements as a function of ionization stage (nebular position). This will allow us to determine the extent of grain destruction and the effects on the thermal balance of the gas. Absorption line studies will permit a more realistic representation of the geometry/density distribution needed for our detailed models. Depending on the actual location of the absorbing matter, abundance assessments may be possible to compare with those deduced from the emission lines. We plan to investigate physical conditions within wind-induced morphology, recently identified, to determine the effects of mechanical heating. The unique resolution of HST will be used to examine Orion on a fine scale to investigate if unresolved (from the ground) ``hot spots'' are present. High excitation lines in the UV (eg. OIII]1663, NII]2142, [FeIV]2836 Angstrom) will permit the measurement of T_e fluctuations for ions never before possible, leading to information on how these depend on the level of ionization or excitation of the gas. All of these goals have as a common underpinning -- understanding the conditions within the nebula and the physical origin of the inferred T_e variations, and finding a prescription for determining reliable nebular abundances. Questions ! Free format text (please update) Observing_Description: We have 5 facets to proposed program -- primary observations with GHRS, FOS, and WFPC2 are 3 of these. A fourth is parallel coordinated WFPC2 with the FOS. The fifth is different in that we are requesting parallel coordinated FOS data be taken along with the primary WFPC2 observations approved by one of us (O'Dell) as a new Cycle 5 proposal GO5976 (``Herbig-Haro objects near the Orion Nebula"). A similar opportunity was granted this group in Cycle 4 for parallel FOS along with O'Dell's GTO primary WFPC2. GHRS Spectra ------------ We propose GHRS observations at position 1SW. This is near our Cycle 3 posn. 1 (see Figure) and has been defined to take advantage of higher flux in NII 6584 learned from recent WFPC2 F658N image (O'Dell & Wen 1994) to maximize S/N in NII 2140--43 Angstrom. The spectra are chosen to further elucidate lines from our Cycle 3 FOS work, that we described above as most interesting in terms of the science proposed and our ongoing HST studies of Orion. All HRS spectra are to be taken with G270M. (1) N II] 2139.68, 2143.45 Angstrom: grating G270M, R = 20200, bandpass ~ 46 Angstrom, sensitivity = 11.7E11 (counts s^-1 diode^-1 per incident (erg s^-1 cm^-2 Angstrom ^-1)). We use our observed FOS flux of the blended pair = 1.36E-14 (ergs s^-1 cm^-2 arcsec^-2) (Rubin et al. 1994), and from atomic physics, assume the 2139 line flux is ~ 30% of the total. Then a S/N = 10 for the weaker line is reached in 6230 sec. (2) [O II] 2470 Angstrom: This line is needed in the same position/aperture as the N II lines. All time estimates here use flux values from Table 1 in Rubin et al. (1994) unless stated otherwise. S/N = 30 is reached in only 6 min. (3) [Fe IV] 2836, 2830 and Mg II 2796, 2803 Angstrom (abs): These can be done in the same bandpass 2793.3 - 2838.8 Angstrom. We were advised by David Soderblom (STScI) that 2816.1 Angstrom is nearest mod 4 carrousel posn. for centering expected 45.5 Angstrom bandpass. We desire central absorption line velocities to ~ 2 kms and will do a WAVECAL preceding this spectrum and that in (4) below. Dr. Soderblom advised us this should provide wavelength accuracy well under 1 kms. S/N = 30 or better is calculated for 2836 and the Mg II lines in 115 min. (4) [Fe IV] 2568.2 and Fe II 2600.173 Angstrom (abs): These can be done in the same bandpass centered at 2584 Angstrom. In addition, there are 3 other absorption lines of interest (Mn II, Fe II) between 2568-- 2600 A. We need 76 min. for S/N =10. FOS Spectra ----------- Higher T_e regions in the nebula that are driven by wind-shocks might show relatively stronger [OIII] lines relative to HI, [NII], or [SII] lines due to a combination of higher T_e (important relative to HI) and higher ionization (important relative to N^+ and S^+). Towards our goal of trying to ascertain the nature of T_e fluctuations in Orion, we searched for regions which had strong relative [OIII] ratios and were morphologically indicative of arcs or filaments. Three such regions were identified and are labeled X1, X2, and X3 in the Figure. X2 is chosen because of its arc -like nature and the fact that O'Dell's WFPC2 images indicate the spectrum will be dominated by emission from the arc rather than low ionization background/foreground matter. We can use the same offset star Parenago 1869 for X2 and 1SW. While the [OIII] 5007 Angstrom surface brightness at X2 is comparable to 1SW, its surface brightness in HAlpha is only half of 1SW, and that of [NII] and [SII] lower by a factor of ~3. Therefore, we propose to take an identical set of FOS spectra of X2, as for 1SW, for which we would expect the surface brightness (and S/N) of the UV lines of OIII 1660--6, NIII 1747--54, and CIII 1907--9 to be higher than at 1SW, because we expect T_e of X2 to be higher than 1SW by about 1500 K (roughly 10,000 K compared with 8500 K for 1SW). The surface brightness of the above-doubly ionized lines in X2 will be 3- -5 times higher relative to the HI lines and continuum, thus easily detectable in a 50min G190H exposure. We expect to be able to derive both T_e and t^2 from the ratios of 1660-6/4363/5007. We will use FOS/RD with 5 gratings (G190H, G270H, G400H, G570H, G780H) and 1.0 circular aperture at position 1SW and X2. This will give total coverage from 1650--8000 Angstrom. Based on our WFPC2 imagery, we calculate respective exposure times (in min.) as (50, 20, 6, 4, 1). A safe 4-stage ~45 min peakup for the offset star is planned. WFPC2 (primary) --------------- We propose using a single field center 5:32:48 -5:26:00 (1950) and three filters, F547M, F502N, and F487N for 200, 300, and 300 seconds respectively. This should give a total signal for H Beta of ~2000 counts and allow accurate subtraction of the continuum contribution to this filter. This overlaps with the fields being covered by O'Dell's Cycle 4 GTO program and John Bally's Cycle 4 GO program, but in neither case is the F487N filter being used. We will include another pair of F502N images in order to have exactly the same field and resolution as in the F487N and F547M filter images. Comparison of the H Beta and O'Dell's H Alpha fields permits derivation of point-to-point reddening via H Alpha/H Beta, which is important for making small-scale extinction corrections to line ratios involving lines over a large wavelength range. If highly deviant temperatures exist, we would expect to see this as local fluctuations in the 5007/H Beta ratio, which is ideal, because it is very insensitive to variable reddening in Orion. All our proposed and previous HST spectroscopic fields will be covered with any orientation. WFPC2 (coordinated parallel with FOS) ------------------------------------- We have successfully operated in this mode augmenting O'Dell's Orion imagery program (see section below). Coordinated parallel observations in the F656N, F658N, F502N, F547M, and F673N will fall on the nearby HII region M43 and the position angles have been carefully selected to allow these fields to abut those imaged as parallel observations in the John Bally Cycle 4 FOS program (those parallel WFPC2 images have been reduced and are being analyzed by O'Dell). FOS (coordinated parallel with WFPC2 O'Dell Cycle 5 GO program) --------------------------------------------------------------- This mode has been approved previously for us along with the Cycle 4 Orion GTO program of O'Dell. It is not a problem for us to find an orientation that guarantees there are no bright stars in the FOS 4.3" aperture at the parallel FOS field, which we have done. In conjunction with O'Dell's Cycle 5 GO5976 program, we propose here to use the parallel time for FOS spectra to augment the science under this program. Parallel positions will be observed with G270H at NO additional HST time and have already been submitted as part of the GO5976 program. Real_Time_Justification: None Much data obtained from ground-based and space-borne imagery & spectroscopy of Orion -- made by team members during more than a decade -- supports the proposed program. These include ground-based CCD imagery, IUE spectra, longslit CCD low and moderate dispersion spectra, coude and echelle spectra, and KAO far-infrared spectroscopy. Much of this is ongoing. For instance, Baldwin/Dufour/O'Dell/Walter continue to obtain ground-based spectra of Orion and will support the proposed observations with ground-based spectroscopy of our program positions during the 1994/5 observing season at CTIO, McDonald, KPNO, and SPM(Mex.). Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets Target_Number: 1 Target_Name: NGC1976-OFFSETHRS Alternate_Names: HD37020,THETA1ORIA Description: STAR,B0-B2 V-IV, Position: RA=5H 35M 15.81S +/- 0.020S, DEC= -5D 23' 14.1" +/- 0.30" Equinox: J2000 Epoch: Rv_or_z: V = 20.0 Flux: B-V = 0.0, TYPE=B0.5V, V = 6.72 +/- 0.05, E(B-V) = 0.28 Comments: POSSIBLE, BUT UNLIKELY, V = 7.7 BECAUSE STAR ECLIPSING BINARY P=65.432D, PRIMARY ECLIPSE LASTS 20H WITH 2.5H CONSTANT MINIMUM AT MID-ECLIPSE. S&T 4/95 p.75 - min. light predicted ~4:48 UT April 11, 1995 7 hrs to fade & 7 hrs to recover. Target_Number: 2 Target_Name: NGC1976-1SW-HRS Alternate_Names: M42-POS1SW-HRS Description: ISM,HII REGION, Position: RA-OFF = -1.1S +/- 0.02S, DEC-OFF = -27.4" +/- 0.3", FROM 1 Equinox: J2000 Epoch: Rv_or_z: V = 20.0 RA_PM: 0.0 Dec_PM: 0.0 Annual_Parallax: 0.0 Flux: SURF-LINE(5007.0) = 4.19 E-12, SURF-CONT(5007.0) = 15.6 E-16, SURF-LINE(3728.0) = 6.00 E-13, SURF-CONT(3728.0) = 4.54 E-15, SURF-LINE(2325.0) = 6.35 E-14, SURF-CONT(2325.0) = 5.88 E-15, SURF-LINE(1908.0) = 7.72 E-14, SURF-CONT(1908.0) = 12.5 E-15, SURF-CONT(1400.0) = 15.0 E-15 Comments: Position NGC1976-1SW-HRS SAME AS POS 1SW BUT LARGER APERTURE Target_Number:3 Target_Name:NGC1976-FOS-OFFSET Alternate_Names:PARENAGO1869 Description:STAR Position:RA=5H 35M 15.93S +/- 0.03S, DEC=-5D 23' 50.3" +/- 0.4" Equinox:J2000 Flux:V = 13.12 +/- 0.5, B-V = 1.7 +/- 0.3, TYPE = G5 Comments:OFFSET STAR PARENAGO1869 Target_Number:4 Target_Name:NGC1976-POS-1SW Alternate_Names: Description:ISM,HII REGION Position:RA-OFF = -1.22S +/- 0.02S, DEC-OFF = +8.8" +/- 0.3", FROM 3 Equinox:J2000 Flux: SURF-LINE(5007.0) = 1.80 E-12, SURF-CONT(5007.0) = 15.6 E-16, SURF-LINE(3728.0) = 5.50 E-13, SURF-CONT(3728.0) = 4.54 E-15, SURF-LINE(2325.0) = 5.40 E-14, SURF-CONT(2325.0) = 5.88 E-15, SURF-LINE(1908.0) = 4.80 E-14, SURF-CONT(1908.0) = 12.5 E-15, SURF-CONT(1400.0) = 15.0 E-15 Comments: Target_Number:5 Target_Name:NGC1976-POS-X2 Alternate_Names: Description:ISM,HII REGION Position:RA-OFF = +0.99S +/- 0.02S, DEC-OFF = -7.2" +/- 0.3", FROM 3 Equinox:J2000 Flux: SURF-LINE(5007.0) = 1.20 E-12, SURF-CONT(5007.0) = 15.6 E-16, SURF-LINE(3728.0) = 1.60 E-13, SURF-CONT(3728.0) = 4.54 E-15, SURF-LINE(2325.0) = 1.50 E-14, SURF-CONT(2325.0) = 5.88 E-15, SURF-LINE(1908.0) = 2.70 E-14, SURF-CONT(1908.0) = 12.5 E-15 Comments: Target_Number:6 Target_Name:NGC1976-WF1 Description:STAR, ISM Position:RA=5H 32M 48.00S +/- 0.01S, DEC=-5D 26' 00.0" +/- 1" Equinox:1950 Flux:SURF-LINE(6563) = 3.0 +/- 1.0 E-12 Comments:Surface brightness given is for the entire line Visits ! Section 6 Visit_Number:1 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_number: 10 Target_Name: NGC1976-OFFSETHRS Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: SEARCH-SIZE=3, BRIGHT=RETURN Number_of_iterations:1 Time_Per_Exposure: 1.8S Special_Requirements:ONBOARD ACQ FOR 11-16 Comments: STEP-TIME=0.2 ! Exposure_Number: 11 Target_Name: NGC1976-1SW-HRS Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2150.0 Optional_Parameters: DOPPLER=DEF Number_of_Iterations: 14 Time_Per_Exposure: 489.6S Special_Requirements: Comments: Exposure_Number: 12 Target_Name: WAVE Config: HRS Opmode: ACCUM Aperture: SC2 Sp_Element: G270M Wavelength: 2816.1 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 30.0S !HRS manual p.98; 60 ? in example !Special_Requirements: SEQ 15-16 NON-INT ! Section 7.2.5 Comments: Proper Wavelength centering CRUCIAL to get entire bandpass (see text). CALIB for 13; NO GAP ? Possible to save time by doing in occultation part of orbit preceeding exposure 13? Exposure_Number: 13 Target_Name: NGC1976-1SW-HRS Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2816.1 Optional_Parameters: DOPPLER=DEF Number_of_Iterations: 26 Time_Per_Exposure: 326.4S !TOTAL = 8462.0S !Special_Requirements: SEQ 12-13 NON-INT ! Section 7.2.5 Comments: Proper Wavelength centering CRUCIAL to get entire bandpass (see text). Is it possible to save time by doing prior WAVE in occultation part of orbit preceeding exposure 13? Exposure_Number: 14 Target_Name: WAVE Config: HRS Opmode: ACCUM Aperture: SC2 Sp_Element: G270M Wavelength: 2584.0 Optional_Parameters: Number_of_Iterations: 1 Time_Per_Exposure: 30.0S !HRS manual p.98; 60 ? in example !Special_Requirements: SEQ 14-15 NON-INT Comments: CALIB for 15; NO GAP ? Possible to save time by doing in occultation part of orbit preceeding exposure 15? Exposure_Number: 15 Target_Name: NGC1976-1SW-HRS Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2584.0 Optional_Parameters: DOPPLER=DEF Number_of_Iterations: 12 Time_Per_Exposure: 380.8S !TOTAL TIME = 4555.0S !Special_Requirements: SEQ 14-15 NON-INT Comments: Is it possible to save time by doing prior WAVE in occultation part of orbit preceeding exposure 15? Exposure_Number: 16 Target_Name: NGC1976-1SW-HRS Config: HRS Opmode: ACCUM Aperture: 2.0 Sp_Element: G270M Wavelength: 2480.0 Optional_Parameters: DOPPLER=DEF Number_of_Iterations: 14 Time_Per_Exposure: 27.2S Special_Requirements: Comments: ! Visit_Number:2 Visit_Requirements:ORIENT 265.0D TO 267.0D On_Hold_Comments: Visit_Comments:The WFPC2 parallel exposures have been commented out. If some of the WFPC2 parallel observations cannot be scheduled we would like to work with our PC in determining what should be cut from the WFPC2 parallel observations. Exposure_Number:21 Target_Name:NGC1976-FOS-OFFSET Config:FOS/RD Opmode:ACQ/PEAK Aperture:4.3 Sp_Element:MIRROR Wavelength: Optional_Parameters:SCAN-STEP-Y=1.23, SEARCH-SIZE-X=1, SEARCH-SIZE-Y=3 Number_of_Iterations:1 Time_Per_Exposure:1.0S Special_Requirements:ONBOARD ACQ FOR 22 Comments: Exposure_Number:22 Target_Name:NGC1976-FOS-OFFSET Config:FOS/RD Opmode:ACQ/PEAK Aperture:1.0 Sp_Element:MIRROR Wavelength: Optional_Parameters:SCAN-STEP-X=0.61, SCAN-STEP-Y=0.61, SEARCH-SIZE-X=6, SEARCH-SIZE-Y=2 Number_of_Iterations:1 Time_Per_Exposure:1.0S Special_Requirements:ONBOARD ACQ FOR 23 Comments: Exposure_Number:23 Target_Name:NGC1976-FOS-OFFSET Config:FOS/RD Opmode:ACQ/PEAK Aperture:0.5 Sp_Element:MIRROR Wavelength: Optional_Parameters:SCAN-STEP-X=0.29, SCAN-STEP-Y=0.29, SEARCH-SIZE-X=3, SEARCH-SIZE-Y=3 Number_of_Iterations:1 Time_Per_Exposure:1.0S Special_Requirements:ONBOARD ACQ FOR 24 Comments: Exposure_Number:24 Target_Name:NGC1976-FOS-OFFSET Config:FOS/RD Opmode:ACQ/PEAK Aperture:0.3 Sp_Element:MIRROR Wavelength: Optional_Parameters:SCAN-STEP-X=0.11, SCAN-STEP-Y=0.11, SEARCH-SIZE-X=4, SEARCH-SIZE-Y=4 Number_of_Iterations:1 Time_Per_Exposure:1.1S Special_Requirements:ONBOARD ACQ FOR 31,33,35,37,39,41,43,45,47,49,51,53 Comments: !orbit 2 Exposure_Number:31 Target_Name:NGC1976-POS-1SW Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G270H Wavelength:!2223-3278 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1320S Special_Requirements:NO SPLIT ! Section 7.2 Comments:coordinated parallel is 32 Exposure_Number:32 Target_Name:NGC1976-POS-1SW Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F658N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:1300S Special_Requirements:PAR WITH 31 Comments:COORD PARALLEL WITH 31 Exposure_Number:33 Target_Name:NGC1976-POS-1SW Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G190H Wavelength:!1590-2312 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:790S Special_Requirements:SAME POS AS 31 NO SPLIT Comments:coordinated parallel is 34 Exposure_Number:34 Target_Name:NGC1976-POS-1SW Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F656N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:700S Special_Requirements:PAR WITH 33 Comments:COORD PARALLEL WITH 33 !orbit 3 Exposure_Number:35 Target_Name:NGC1976-POS-1SW Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G190H Wavelength:!1590-2312 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:2170S !changed to 2350S by RPS2 as we WANT Special_Requirements:SAME POS AS 31 NO SPLIT Comments:coordinated parallel is 36 Exposure_Number:36 Target_Name:NGC1976-POS-1SW Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F673N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:1970S Special_Requirements:PAR WITH 35 Comments:COORD PARALLEL WITH 35 !orbit 4 Exposure_Number:37 Target_Name:NGC1976-POS-1SW Config:FOS/RD Opmode:RAPID Aperture:1.0 Sp_Element:G570H Wavelength:!4571-6820 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:240S Special_Requirements:SAME POS AS 31 NO SPLIT Comments:coordinated parallel is 38 Exposure_Number:38 Target_Name:NGC1976-POS-1SW Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F547M Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:230S Special_Requirements:PAR WITH 37 Comments:COORD PARALLEL WITH 37 Exposure_Number:39 Target_Name:NGC1976-POS-1SW Config:FOS/RD Opmode:RAPID Aperture:1.0 Sp_Element:G400H Wavelength:!3238-4781 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:320S Special_Requirements:SAME POS AS 31 NO SPLIT Comments:coordinated parallel is 40 Exposure_Number:40 Target_Name:NGC1976-POS-1SW Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F502N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:300S Special_Requirements:PAR WITH 39 Comments:COORD PARALLEL WITH 39 !MOVE TO POSITION X2 Exposure_Number:41 Target_Name:NGC1976-POS-X2 Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G270H Wavelength:!2223-3278 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:1200S !changed to 1320S by RPS2 as we WANT Special_Requirements: NO SPLIT Comments:coordinated parallel is 42 Exposure_Number:42 Target_Name:NGC1976-POS-X2 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F658N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:1300S Special_Requirements:PAR WITH 41 Comments:COORD PARALLEL WITH 41 !orbit 5 Exposure_Number:43 Target_Name:NGC1976-POS-X2 Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G190H Wavelength:!1590-2312 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:2200S Special_Requirements:SAME POS AS 41 NO SPLIT Comments:coordinated parallel is 44 Exposure_Number:44 Target_Name:NGC1976-POS-X2 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F673N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:2150S Special_Requirements:PAR WITH 43 Comments:COORD PARALLEL WITH 43 !orbit 6 Exposure_Number:45 Target_Name:NGC1976-POS-X2 Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G190H Wavelength:!1590-2312 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:700S !changed to 710S by RPS2 as we WANT Special_Requirements:SAME POS AS 41 NO SPLIT Comments:coordinated parallel is 46 Exposure_Number:46 Target_Name:NGC1976-POS-X2 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F656N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:700S Special_Requirements:PAR WITH 45 Comments:COORD PARALLEL WITH 45 Exposure_Number:47 Target_Name:NGC1976-POS-X2 Config:FOS/RD Opmode:RAPID Aperture:1.0 Sp_Element:G570H Wavelength:!4571-6820 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:240S Special_Requirements:SAME POS AS 41 NO SPLIT Comments:coordinated parallel is 48 Exposure_Number:48 Target_Name:NGC1976-POS-X2 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F547M Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:230S Special_Requirements:PAR WITH 47 Comments:COORD PARALLEL WITH 47 Exposure_Number:49 Target_Name:NGC1976-POS-X2 Config:FOS/RD Opmode:RAPID Aperture:1.0 Sp_Element:G400H Wavelength:!3238-4781 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:400S !changed to 440S by RPS2 as we WANT Special_Requirements:SAME POS AS 41 NO SPLIT Comments:coordinated parallel is 50 Exposure_Number:50 Target_Name:NGC1976-POS-X2 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F502N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:400S Special_Requirements:PAR WITH 49 Comments:COORD PARALLEL WITH 49 Exposure_Number:51 Target_Name:NGC1976-POS-X2 Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G780H Wavelength:!6272-9219 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:50S Special_Requirements:SAME POS AS 41 NO SPLIT Comments:coordinated parallel is 52 Exposure_Number:52 Target_Name:NGC1976-POS-X2 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F547M Wavelength: Optional_Parameters:CLOCKS=NO, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:50S Special_Requirements:PAR WITH 51 Comments:COORD PARALLEL WITH 51 !Move BACK to Position 1SW Exposure_Number:53 Target_Name:NGC1976-POS-1SW Config:FOS/RD Opmode:ACCUM Aperture:1.0 Sp_Element:G780H Wavelength:!6272-9219 Optional_Parameters: Number_of_Iterations:1 Time_Per_Exposure:50S !changed to 60S by RPS2 as we WANT Special_Requirements:SAME POS AS 31 NO SPLIT Comments:coordinated parallel is 54 Exposure_Number:54 Target_Name:NGC1976-POS-1SW Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F547M Wavelength: Optional_Parameters:CLOCKS=NO, CR-SPLIT=NO Number_of_Iterations:1 Time_Per_Exposure:60S Special_Requirements:PAR WITH 53 Comments:COORD PARALLEL WITH 53 Visit_Number:3 Visit_Requirements:ORIENT 314.0D TO 46.0D ! Section 7.1 On_Hold_Comments: Visit_Comments:The ORIENT range includes north. Exposure_Number:51 Target_Name:NGC1976-WF1 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F487N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:2 Time_Per_Exposure:300.0S Special_Requirements: Comments: Exposure_Number:52 Target_Name:NGC1976-WF1 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F547M Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:2 Time_Per_Exposure:200S Special_Requirements:SAME POS AS 51 Comments: Exposure_Number:53 Target_Name:NGC1976-WF1 Config:WFPC2 Opmode:IMAGE Aperture:WFALL Sp_Element:F502N Wavelength: Optional_Parameters:CLOCKS=YES, CR-SPLIT=NO Number_of_Iterations:2 Time_Per_Exposure:300S Special_Requirements:SAME POS AS 51 Comments: ! Uncomment or copy exposure level special requirements needed ! INTeractive ACQuisition FOR ! ONBOARD ACQuisition FOR ! POSition TARGet , ! SAME POSition AS ! DO FOR TARGets ! FGS only ! PARallel WITH ! GROUP-FGS WITHIN