! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! Id: 6555 ! version obtained from Schechter oct 10 96. Edited Franx ! submitted Mar July 9 1997 ! ! 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: Mutchler ! Phone: 410-338-1321 , E-mail: mutchler@stsci.edu Proposal_Information ! Section 4 Title: What causes the astigmatism in gravitational lenses? Proposal_Category: GO Scientific_Category: COSMOLOGY Cycle: 6 Investigators PI_name: Paul Schechter PI_Institution: MIT CoI_Name: Marijn Franx CoI_Institution: Kapteyn Astronomical Institute Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) Among multiply imaged quasars, those for which the shape of the lensing mass can be measured show surprisingly strong deviations from circular symmetry -- astigmatism in the gravitational lens. This astigmatism can be due to the flattening of lensing galaxy itself or due to tides from neighboring galaxies. Likewise it can be due to dark matter interior or exterior to the system's Einstein radius. In either case the implied flattenings and tides are larger than one would naively expect. Before the full potential of lenses can be exploited, the source of this astigmatism must be identified. We propose a direct search for the source of this astigmatism through deep HST imaging of the lensed objects. Such images will be used to measure the shape of the lensing galaxies in detail, and the matter distribution surrounding them. If the astigmatism is due to large scale structure, it should be measurable in the weak lensing (polarization) of nearby faint galaxies. These measurements provide a direct test of the two alternatives. Questions ! Free format text (please update) Observing_Description: We propose to do deep imaging of the lenses in the red (F814W). This is the reddest passband with reasonable throughput and good PSF monitoring. The passband is extensively used and has good calibrations. PG1115+80: The Einstein radius is about 1''. We propose 1 orbit of short exposures, and a series of long exposures. The short exposures will be taken on the PC chip, to measure the locations of the 4 QSO images accurately. The long exposures will be taken on the WF chip, so that we will be photon noise limited. The lensing galaxy is at a redshift of 0.295 and has an R magnitude of 19.8 (Angonin-Williame et al. 1993). An exposure time of 10,000 sec should give us a S/N of 10 at a surface brightness of 22.4 in I. The deep exposures will also produce independent point spread functions from the stellar images which are nearby, which are important for proper modeling of the PSF. In order to reduce the systematic errors in PSF fitting, the object will be shifted somewhat (dithered) between exposures. The total number of orbits is 6., 1608+657: The source is an extended galaxy, and the lens has been reported to be at z=0.6. We propose to take deep integrations to image the structure of source and lens. We propose to integrate for a total of 20,000 sec in F814W. This equals 9 orbits, unless the observations can be scheduled in the continuous viewing time-slot. We do not specifically request CVZ observing, because the total integration time is relatively short. The difficulty in scheduling CVZ may therefore offset the enhanced efficiency. We will obtain a S/N of 10 at a surface brightness of 22.8 in I. This is well matched to the redshift of the lens, at z=0.6., , omit 1413+117: The Einstein radius of this system is rather small, 0.6''. Contamination of the lens image by the star is therefore an additional worry. The main goal of the exposures is the detection of the lens, and its shape. Earlier images taken with WFPC2 indicate that the light from the QSO dominates the sky by a factor of XXX near the center. These images were taken with the WF chips. The implication is that it is better to image this system with the PC chip, since the photon noise from the QSO light will dominate the read noise. We propose to take 4 deep images in two passbands. The telescope will be shifted from one exposure to the other, so that calibration and the PSF modeling becomes more robust. References, , Angonin-Williame et al., 1993, ``Gravitational Lenses in the Universe'', ed. J. Surdej et al., (Liege: Universite de Liege), p.85. Real_Time_Justification: PG1115+080 has been monitored by one of us (PLS) at MDM Observatory for the past four seasons. It shows small but highly significant variations in the flux ratios for the four components in each of two filters (Figure 2). The single greatest source of uncertainty and systematic error is the model for the surface brightness profile of the lensing galaxy, which blends with the 4 images of the QSO. The proposed HST data would permit substitution of an empirical model, or at the very least, would constrain the analytic model, for which the shape parameters are exceedingly difficult to obtain from groundbased data. With a perfect model the rms errors in the fainter components would be reduced from 8 millimag to 5 millimag on 5 minute V band exposures. This would apply both to data already taken and data yet to be taken. PLS will propose to monitor PG1115+080 intensively this coming season (15 minutes every two nights) using the WIYN telescope in its queue scheduled mode., \epsfxsize=6.5truein 71 40 555 328both2.ps Figure 2. Figure 2a we shows the variability of A1 + A2 of PG1115+080 relative to Vanderriest's star F over the course of 40 months. Figure 2b shows the ratio C/(A1 + A2) as observed at V and I. All of the points are derived from averages of at least 3 frames taken with the Hiltner Telescope, with the exception of 1994 April V point, obtained from a single exposure, and the filled symbol, obtained at CTIO. This latter point was obtained at the same time, 1992 April, as point labeled ``1''. The agreement of these two, obtained with different seeing and different sampling using different instruments, supports the conclusion that the variation in C/(A1+A2) is real and not the result of systematic error., ! positions from PS B1950 ! *C 391.000 711.000 11 15 38.48 + 8 2 52.3 0.00 -0.08 ! *B 498.380 358.030 11 15 44.98 + 8 2 21.7 -0.15 0.02 ! *A 250.300 176.940 11 15 48.40 + 8 3 29.4 0.10 0.03 ! A1 496.175 547.143 11 15 41.48 + 8 2 22.9 ! A2 494.497 546.604 11 15 41.49 + 8 2 23.4 ! A average 11 15 41.49 8 2 23.2 ! OLD position from wyn-image + dss/gsc correlation MF J2000 ! 11 18 20.498 7 45 57.109 STARB ! 11 18 13.999 7 46 28.079 STARC Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: PG1115+080 Alternate_Names: Description: GALAXY, GRAVITATIONAL LENS Position: RA=11H 15M 41.49S +/- .001S, DEC=08D02' 23.2" +/- 0.01" Equinox: B1950 RV_or_Z: Z=0.3 Flux: V=17, B-V=0.5 Comments: Position from PS. Target_Number: 2 Target_Name: PG1115+080-STARB Alternate_Names: Description: STAR Position: RA=11H 15M 44.98S +/- .001S, DEC=08D02' 21.7" +/- 0.01" Equinox: B1950 RV_or_Z: Z=0. Flux: V=16, B-V=0.7 Comments: STAR for PSF on WF, QSO on PC. Position from PS. ! PLATE-ID=0000 Target_Number: 3 Target_Name: PG1115+080-STARC Alternate_Names: Description: STAR Position: RA=11H 15M 38.48S +/- .001S, DEC=08D02' 52.3" +/- 0.01" Equinox: B1950 RV_or_Z: Z=0. Flux: V=17, B-V=1.0 Comments: STAR for PSF on WF, QSO on PC. Position from PS. ! PLATE-ID=0000 Target_Number: 4 Target_Name: QSO-160913+65322 Alternate_Names: Description: GALAXY, GRAVITATIONAL LENS Position: RA=16H 09M 13.956S +/- .001S, DEC=65D32' 28.97" +/- 0.01" Equinox: J2000 RV_or_Z: Z=1 Flux: V=21.5, B-V=1.0 ! PLATE-ID=0000 Comments: position from Myers et al ApJL 447, L6. ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits ! Section 6 Visit_Number: 1 Visit_Requirements: ORIENT 271D TO 272D On_Hold_Comments: Visit_Comments: two guide stars requested. Don't change ORIENT without notifying PI. The ORIENT can be changed by the PI if it helps schedulability. email PI about all changes: schech@achernar.mit.edu. Background sky as low as possible. Exposure_Number: 1 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1000S Special_Requirements: POS TARG -10, -10 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 2 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10.55, -10 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 ! Exposure_Number: 3 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10, -10.55 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 4 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1200S Special_Requirements: POS TARG -10.55, -10.55 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 10 ! Section 6.5 Target_Name: PG1115+080-STARB Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 30S Special_Requirements: POS TARG -10, -10 Comments: short exposure. Unsaturated on PC Exposure_Number: 11 ! Section 6.5 Target_Name: PG1115+080-STARB Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG -10, -10 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 12 ! Section 6.5 Target_Name: PG1115+080-STARB Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG -10.55, -10 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 13 ! Section 6.5 Target_Name: PG1115+080-STARB Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG -10, -10.55 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 14 ! Section 6.5 Target_Name: PG1115+080-STARB Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 400S Special_Requirements: POS TARG -10.55, -10.55 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Visit_Number: 2 Visit_Requirements: ! Section 7.1 ORIENT 123D TO 124D On_Hold_Comments: Visit_Comments: two guide stars requested. Don't change ORIENT without notifying PI. The ORIENT can be changed by the PI if it helps schedulability. email PI about all changes: schech@achernar.mit.edu. Background sky as low as possible. Exposure_Number: 1 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1000S Special_Requirements: POS TARG -10, -10 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 2 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10.55, -10 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 3 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10, -10.55 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 4 ! Section 6.5 Target_Name: PG1115+080 Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1200S Special_Requirements: POS TARG -10.55, -10.55 Comments: 4 exposures in 2 orbits, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 10 ! Section 6.5 Target_Name: PG1115+080-STARC Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 30S Special_Requirements: POS TARG -10, -10 Comments: short exposure. Unsaturated on PC. Don't lenthen this. Exposure_Number: 11 ! Section 6.5 Target_Name: PG1115+080-STARC Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10, -10 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 12 ! Section 6.5 Target_Name: PG1115+080-STARC Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10.55, -10 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 20 ! Section 6.5 Target_Name: PG1115+080-STARC Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 30S Special_Requirements: POS TARG -10.55, -10.55 Comments: short exposure. Unsaturated on PC Exposure_Number: 21 ! Section 6.5 Target_Name: PG1115+080-STARC Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10.55, -10.55 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Exposure_Number: 22 ! Section 6.5 Target_Name: PG1115+080-STARC Config: WFPC2 Opmode: IMAGE Aperture: WFALL-FIX Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 1100S Special_Requirements: POS TARG -10, -10.55 Comments: 4 exposures in 1 orbit, with 2D dithering with POS TARG Dither of 0.55 arcsec=5.5 WFPC pixels and 12.5 PC pixels ! The dither is (0,0), (0.55,0),(0,0.55),(0.55,0.55). Driven with POS TARG ! The qso is at position -10, -10. When starB is at this position, then ! The qso will be nicely in the center of PC (distance WFALL-FIX and PC1 ! is 38 arcsec, distance starB-qso is 53 arcsec, remainder is 15 arcsec ! which is very close to 38+sqrt(2)*10 Visit_Number: 3 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: two guide stars required. email PI about all changes: schech@achernar.mit.edu. Background sky should be as low as possible. Exposure_Number: 1 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2800S Special_Requirements: POS TARG 0., 0. Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 2 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0., 0. Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 3 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0., 0. Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 4 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0., 0. Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 11 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0.22, 0.22 Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 12 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F814W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0.22, 0.22 Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 13 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0.22, 0.22 Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Exposure_Number: 14 ! Section 6.5 Target_Name: QSO-160913+65322 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F606W Optional_Parameters: CR-SPLIT=NO Number_of_Iterations: 1 Time_Per_Exposure: 2900S Special_Requirements: POS TARG 0.22, 0.22 Comments: 4 exposures in 4 orbits per passband. Dither of 5 PC pixels. POS TARG driven. Data_Distribution ! Defaults indicated; change if desired Medium: 8MM ! 8MM or 6250BPI or 1600BPI Blocking_Factor: 10 ! 10 or 1 ! Only astronomers with very old 9- ! track tape drives should consider ! a blocking factor of 1 Ship_To: PI_Address ! STSCI or PI_Address or ! PI Address from Phase I is: ! ! Physics 6-206 ! Cambridge ! 02139 ! ! Ship_Via: UPS ! UPS (2-day) or OVERNIGHT ! Overnight shipping done at PI expense Recipient_Email: ! Needed if Ship_To: is not PI_Address ! ! Let us know what you think of this template and software! ! Please send a list of your likes and dislikes to your Program Coordinator