10568( 5) - 04/17/06 15:59 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 10568 Version: 5 Check-in Time: 17-Apr-2006 19:58:01 STScI Edit Number: Title Ultraviolet spectrum of the binary millisecond pulsar J0437-4715 ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO 14 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Oleg Y. Kargaltsev The Pennsylvania State University CoI: Dr. George G. Pavlov The Pennsylvania State University N CoI: Prof. Roger Romani Stanford University N ------------------------------------------------------------------------------------ Abstract PSR J0437-4715 is the nearest and the brightest millisecond (recycled) pulsar, and the only one detected at near-optical wavelengths. We detected it with the HST STIS/FUV-MAMA detector and found that its FUV spectrum is consistent with being emitted from the neutron star surface with a temperature of about 0.1 MK, surprisingly high for such an old object. We also found evidence of an emission line at 1372 A, tentatively interpreted as a Zeeman component of the hydrogen Ly-alpha line in a magnetic field of 700 MG. Unfortunately, the spectrum was imaged in a region of strong detector background, which strongly hampered the spectral analyses. We propose to re-observe the pulsar with the ACS/SBC in FUV and ACS/HRC in NUV to obtain the spectrum of the pulsar in a broad UV range. The spectral analysis will allow us to measure the temperature of the full neutron star surface and probe the heating mechanisms operating in old neutron stars. Confirmation of the spectral line would lead to a first direct measuremnt of the magnetic field and the radius of a spin-powered neutron star and uniquely constrain the equation of state of superdense matter. The NUV spectrum will also probe the magnetospheric emission and the thermal structure of the cool white dwarf companion. ------------------------------------------------------------------------------------ 10568( 5) - 04/17/06 15:59 - [ 2] Observations Description ------------------------ We propose to observe J0437 with the ACS HRC and SBC detectors. The SBC-MAMA will be used to measure the spectrum in the 1250-1800 A range and to confirm the 1372 A line. We will use the PR130L prism to obtain a dispersed low- resolution FUV spectrum with a wavelength-dependent resolution. To obtain a good fit with at least 3 fitting parameters (e.g., temperature, size, and extinction, for the thermal model), the spectrum must be detected in at least 8 wavelength bins with S/N > 8. Because of the lack of a slit, the SBC background over the whole field of view (FOV) will be dominated by emission from the strong geocoronal OI lines at 1304 and 1356 A (hydrogen Ly-alpha line at 1216 A will be cut-off by the prism throughput). Because the bright geocoronal background would severely compromise the observed pulsar spectrum, we request the target to be observed in the Earth shadow to minimize the contribution of the geocoronal background. With the SHADOW requirement the ETC calculations show that we can achieve S/N>8 in 8 spectral bins in a 17.6 ks scientific exposure with SBC/PR130L. This exposure will require 11 HST orbits (1600 ks per orbit), with allowance for the acquisition exposures and instrument overheads. To increase the efficiency of the observation and to better calibrate the wavelength zero-point for the PRISM exposures, we will also take images with SBC/F140LP during the non-SHADOW part of each orbit (850 s scientific exposure per orbit; total 9.35 ks). Using the F140LP filter will allow us to cut off most of the geocoronal emission and detect the pulsar with S/N>13 in a 2 ks exposure (i.e. within one three-orbit visit ) To obtain a low-resolution NUV spectrum (1900-4500 A), we will use the HRC with PR200L prism. The sensitivity of HRC/PR200L is much higher than that of SBC/PR130L, and ETC calculation shows that a sufficiently good spectrum can be obtained with an "average" (default) ETC settings for the sky background. Therefore, we do not need the SHADOW requirement for this part of the observation. To estimate S/N with ETC, we used a three-component source spectral model: NS thermal emission + pulsar magnetospheric emission + WD atmosphere emission. For various combinations of these components, consistent with the previous FUV data, we obtained the distributions of counts over dispersion pixels and calculated the count rates in various wavelength bins. We found that at the lowest reasonable fluxes in the three source components (zero magnetospheric component, lower limit on the thermal NS component, and 4000 K blackbody WD spectrum) we will measure the spectrum with S/N varying from 6 (at the shortest wavelengths) to 100 (at longer wavelengths) in 11 wavelength bins in a 1900-4300 A range in a 7.6 ks exposure (3 orbits, with allowance for overheads). Assuming the strongest magnetospheric component as allowed by the FUV spectrum and the correspondingly fainter thermal NS component, the 7.6 ks exposure will give us a spectrum with S/N > 8 in 11 bins in a 1900-4300 A range. At the intermediate wavelengths, 2800-3800 A, expected S/N values are 20-50, regardless of the magnetospheric component strength. The number of spectral bins and/or S/N will be further increased if the WD atmosphere flux exceeds the 4000 K blackbody flux in the NUV range. To better calibrate the wavelength zero-point in the spectroscopic exposures with PR200L prism, we will also take 3 short imaging exposures. The first one is the default AUTOIMAGE exposure (360 s with HRC/F330W). It will be taken during the first orbit and should detect the pulsar's WD companion with S/N>13. The second and third imaging exposures (100 s long each; both with HRC/F555W filter) will be taken during the 2nd and 3rd orbits, respectively. In each of this exposures the WD will be detected with S/N>30 (the WD is brighter 10568( 5) - 04/17/06 15:59 - [ 3] in the V band). During the second and third orbits no AUTOIMAGE (360 s with FHRC/F330W) should be taken. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10568( 5) - 04/17/06 15:59 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437- STAR, PULSAR RA=04H37M15.8400S +/- 0.5", J2000 V = 20.9+/-0.1 4715 DEC=-47D15'8.63" +/- 0.5", B-V=1.2+/-0.1 PLATE-ID=03C1 R=20.1+/-0.1 I=19.4+/-0.1 Coordinate Source: HST_IMAGE Comments: This binary pulsar has a proper motion (+121,-71) mas/yr. The position has been measured from the HST STIS/CCD image of 2001.65 and computed for 2006.0. This observation does not require on-board aquisition. A pointing accuracy of 2'' is sufficient. 10568( 5) - 04/17/06 15:59 - [ 5] Visit: 01 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: NUV spectroscopy with PR200L prism. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437-47 ACS/HRC ACCUM HRC PR200L 1 2396 S 15 Comments: First orbit. The default AUTOIMAGE is taken during this orbit. ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRJ0437-47 ACS/HRC ACCUM HRC F555W CR-SPLIT=NO 1 100 S 15 Comments: Second orbit, 100 s V-band imaging exposure is taken for wavelength calibraration instead of the default AUTOIMAGE. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRJ0437-47 ACS/HRC ACCUM HRC PR200L AUTOIMAGE=NO 1 2580 S 15 Comments: We request AUTOIMAGE=NO for this exposure since the 100 s F555W image is taken instead. ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRJ0437-47 ACS/HRC ACCUM HRC F555W CR-SPLIT=NO 1 100 S 15 Comments: Third orbit, 100 s V-band imaging exposure taken for wavelength calibraration instead of the default AUTOIMAGE. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 5 PSRJ0437-47 ACS/HRC ACCUM HRC PR200L AUTOIMAGE=NO 1 2637 S 15 Comments: We request AUTOIMAGE=NO for this exposure since the 100 s F555W image is taken instead. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 1 ACS/HRC ACCUM HRC PR200L none none none 1 1 N/A PSRJ0437-4715 1 ACS/HRC ACCUM HRC PR200L none none none 2 1 N/A PSRJ0437-4715 2 ACS/HRC ACCUM HRC F555W none none none none 2 N/A PSRJ0437-4715 3 ACS/HRC ACCUM HRC PR200L none none none 1 2 N/A 10568( 5) - 04/17/06 15:59 - [ 6] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 3 ACS/HRC ACCUM HRC PR200L none none none 2 2 N/A PSRJ0437-4715 4 ACS/HRC ACCUM HRC F555W none none none none 3 N/A PSRJ0437-4715 5 ACS/HRC ACCUM HRC PR200L none none none 1 3 N/A PSRJ0437-4715 5 ACS/HRC ACCUM HRC PR200L none none none 2 3 N/A 10568( 5) - 04/17/06 15:59 - [ 7] Visit: 02 Visit Priority: Visit Requirements: ORIENT 15.0D TO 40.0 D; ORIENT 100.0D TO 250.0 D; ORIENT 275.0D TO 320.0 D On Hold Comments: Additional Comments: FUV spectroscopy with SBC and PR1300L. The ORIENT is restricted to avoid a potentially bright nearby galaxy. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S SHADOW 15 Comments: This is 1st spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S 15 Comments: This is 1st imaging exposure taken outside the SHADOW. It should follow (or precede) the 1st spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S SHADOW 15 Comments: This is 2nd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S 15 Comments: This is 2nd imaging exposure taken outside the SHADOW. It should follow (or precede) the 2nd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 5 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S SHADOW 15 Comments: This is 3rd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 10568( 5) - 04/17/06 15:59 - [ 8] Exposures ----------------------------------------------------------------------------------------------------------------------------------- Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ----------------------------------------------------------------------------------------------------------------------------------- 6 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S 15 Comments: This is 3rd imaging exposure taken outside the SHADOW. It should follow (or precede) the 3rd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 1 ACS/SBC ACCUM SBC PR130L none none none none 1 N/A PSRJ0437-4715 2 ACS/SBC ACCUM SBC F140LP none none none none 1 N/A PSRJ0437-4715 3 ACS/SBC ACCUM SBC PR130L none none none none 2 N/A PSRJ0437-4715 4 ACS/SBC ACCUM SBC F140LP none none none none 2 N/A PSRJ0437-4715 5 ACS/SBC ACCUM SBC PR130L none none none none 3 N/A PSRJ0437-4715 6 ACS/SBC ACCUM SBC F140LP none none none none 3 N/A 10568( 5) - 04/17/06 15:59 - [ 9] Visit: 03 Visit Priority: Visit Requirements: ORIENT 110.0D TO 320.0 D On Hold Comments: Additional Comments: FUV spectroscopy with SBC and PR1300L. The ORIENT is restricted to avoid a potentially bright nearby galaxy. We apply POS TARG Y-OFFSET=-4.5'' to reduce the impact of the SBC thermal glow. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 1st spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 1st imaging exposure taken outside the SHADOW. It should follow (or precede) the 1st spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 2nd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 2nd imaging exposure taken outside the SHADOW. It should follow (or precede) the 2nd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 5 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 3rd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 10568( 5) - 04/17/06 15:59 - [ 10] Exposures ----------------------------------------------------------------------------------------------------------------------------------- Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ----------------------------------------------------------------------------------------------------------------------------------- 6 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 3rd imaging exposure taken outside the SHADOW. It should follow (or precede) the 3rd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 1 ACS/SBC ACCUM SBC PR130L none none none none 1 N/A PSRJ0437-4715 2 ACS/SBC ACCUM SBC F140LP none none none none 1 N/A PSRJ0437-4715 3 ACS/SBC ACCUM SBC PR130L none none none none 2 N/A PSRJ0437-4715 4 ACS/SBC ACCUM SBC F140LP none none none none 2 N/A PSRJ0437-4715 5 ACS/SBC ACCUM SBC PR130L none none none none 3 N/A PSRJ0437-4715 6 ACS/SBC ACCUM SBC F140LP none none none none 3 N/A 10568( 5) - 04/17/06 15:59 - [ 11] Visit: 04 Visit Priority: Visit Requirements: ORIENT 110.0D TO 320.0 D On Hold Comments: Additional Comments: FUV spectroscopy with SBC and PR1300L. The ORIENT is restricted to avoid a potentially bright nearby galaxy. We apply POS TARG Y-OFFSET=-4.5'' to reduce the impact of the SBC thermal glow. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 1st spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 1st imaging exposure taken outside the SHADOW. It should follow (or precede) the 1st spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 2nd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 2nd imaging exposure taken outside the SHADOW. It should follow (or precede) the 2nd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 5 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 3rd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 10568( 5) - 04/17/06 15:59 - [ 12] Exposures ----------------------------------------------------------------------------------------------------------------------------------- Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ----------------------------------------------------------------------------------------------------------------------------------- 6 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 3rd imaging exposure taken outside the SHADOW. It should follow (or precede) the 3rd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 1 ACS/SBC ACCUM SBC PR130L none none none none 1 N/A PSRJ0437-4715 2 ACS/SBC ACCUM SBC F140LP none none none none 1 N/A PSRJ0437-4715 3 ACS/SBC ACCUM SBC PR130L none none none none 2 N/A PSRJ0437-4715 4 ACS/SBC ACCUM SBC F140LP none none none none 2 N/A PSRJ0437-4715 5 ACS/SBC ACCUM SBC PR130L none none none none 3 N/A PSRJ0437-4715 6 ACS/SBC ACCUM SBC F140LP none none none none 3 N/A 10568( 5) - 04/17/06 15:59 - [ 13] Visit: 05 Visit Priority: Visit Requirements: ORIENT 110.0D TO 320.0 D On Hold Comments: Additional Comments: FUV spectroscopy with SBC and PR1300L. The ORIENT is restricted to avoid a potentially bright nearby galaxy. We apply POS TARG Y-OFFSET=-4.5'' to reduce the impact of the SBC thermal glow. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 1st spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 1st imaging exposure taken outside the SHADOW. It should follow (or precede) the 1st spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ 3 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 2nd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 4 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 2nd imaging exposure taken outside the SHADOW. It should follow (or precede) the 2nd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 1 ACS/SBC ACCUM SBC PR130L none none none none 1 N/A 10568( 5) - 04/17/06 15:59 - [ 14] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 2 ACS/SBC ACCUM SBC F140LP none none none none 1 N/A PSRJ0437-4715 3 ACS/SBC ACCUM SBC PR130L none none none none 2 N/A PSRJ0437-4715 4 ACS/SBC ACCUM SBC F140LP none none none none 2 N/A 10568( 5) - 04/17/06 15:59 - [ 15] Visit: 52 Visit Priority: Visit Requirements: ORIENT 110.0D TO 320.0 D On Hold Comments: Additional Comments: FUV spectroscopy with SBC and PR1300L. The ORIENT is restricted to avoid a potentially bright nearby galaxy. We apply POS TARG Y-OFFSET=-4.5'' to reduce the impact of the SBC thermal glow. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 PSRJ0437-47 ACS/SBC ACCUM SBC PR130L 1 1600 S POS TARG 0,-4.5; SHADOW 15 Comments: This is 2nd spectroscopic exposure taken with the SHADOW requirement. It should be followed (or preceded) by the imaging exposure taken outside the SHADOW during the same orbit. ------------------------------------------------------------------------------------------------------------------------------------ 2 PSRJ0437-47 ACS/SBC ACCUM SBC F140LP 1 850 S POS TARG 0,-4.5 15 Comments: This is 2nd imaging exposure taken outside the SHADOW. It should follow (or precede) the 2nd spectroscopic exposure taken within the SHADOW during the same orbit. We require the direct image to be centered at the same position on the detector as the prism image. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSRJ0437-4715 1 ACS/SBC ACCUM SBC PR130L none none none none 1 N/A PSRJ0437-4715 2 ACS/SBC ACCUM SBC F140LP none none none none 1 N/A 10568( 5) - 04/17/06 15:59 - [ 16] Summary Form for Proposal 10568 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures HRC SBC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/HRC ACS/SBC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO AUTOIMAGE=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 15.0D TO 40.0 D; ORIENT 100.0D TO 250.0 D; ORIENT 275.0D TO 320.0 D; SHADOW; ORIENT 110.0D TO 320.0 D; POS TARG 0,-4.5; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements PR200L F555W PR130L F140LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names PSRJ0437-4715 ------------------------------------------------------------------------------------------------------------------------------------