9239( 6) - 12/04/01 14:57 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 9239 Version: 6 Check-in Date: 04-Dec-2001 14:56:18 1.Proposal Title: Absolute Proper Motions of Nearby Dwarf Spheroidal Galaxies-Cycle 10 ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle GO 10 ------------------------------------------------------------------------------------ 4. Investigators Contact? PI: Edward Olszewski University of Arizona CoI: Dr. Hugh Harris US Naval Observatory N CoI: Dr. Mario Mateo Univ of Michigan N CoI: Dr. Dante Minniti Universidad Catolica, Chile N CoI: Dr. David Monet US Naval Observatory N CoI: Dr. Heather Morrison Case Western Reserve Univ N CoI: Dr. Carlton Pryor Rutgers University N CoI: Dr. Chris Tinney Anglo-Australian Observatory N ------------------------------------------------------------------------------------ 5. Abstract We propose to measure precise absolute proper motions for four dwarf spheroidal satellites of the Milky Way using spectroscopically-confirmed background QSOs to define a zero- velocity reference frame. Three epochs within the 2 years separating 3 HST cycles will yield systemic tangential velocities of UMi, Car, Scl, (and For) to +/- 78 kms\ (+/- 130 kms). These are worst-case velocity precisions and they are likely to be 2* smaller. With 2-3 QSOs per galaxy and 3 observations per QSO field we will have a clear understanding of the systematic errors that could affect the astrometry. We will test whether the halo contains a small number of massive streams containing several dwarf galaxies, or whether the individual halo dwarfs are traveling along independent orbits. HST is essential to achieving the high precisions needed to conclusively compare the projected orbital motions of the individual galaxies; even with our conservative uncertainties, we are competitive with the best ground-based efforts with only a 2 year baseline. We will also use our results to improve our estimate of the mass of the Galaxy interior to ~ 100 kpc. ------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 2] Observations Description ------------------------ We wish to observe 2-3 fields per galaxy and to make observations 3 times within a 2-year period. We already have Cycle 7 WFPC2 time (8 orbits) to observe 1 field per galaxy (the Fornax field has 2 quasars) and are requesting 10 orbits in Cycle 8 to obtain 5 additional fields. In Cycles 9 and 10 we need to reobserve all 9 fields, thus requiring 18 orbits per Cycle. Because we must do completely ``differential'' astrometry (see the extensive discussion below) some of these Cycle 9 and 10 observations must be done with WFPC2 and some with STIS. We address here in some detail the requirements necessary to achieve precision astrometry with HST. The ability of HST to produce precise astrometry is much clearer now than in the previous proposal cycles because of the extensive tests done by Meylan Etal\ (GO programs 5912 and 6467) and King Etal\ (GO programs 5929 and 6797) in Cycles 5 and 6. Several of us (D.M., C.P, and C.T.) are co- investigators in this work and we provide below details that have not yet reached the published literature. Next we discuss why we believe that STIS will produce even better astrometry than WFPC2 and close by outlining complementary work being done by us from the ground. CCD astrometry from the ground has shown that three fundamental issues must be addressed to achieve high-precision relative astrometry. If these issues are successfully addressed, relative positions accurate to better than 1\ photons (about 10, 000) are recorded. Proper motions and parallaxes done with CCDs at the US Naval Observatory and the ESO NTT show that (1) centroiding to better than 0.01 pixel is possible in general from the ground and (2) that the precision is limited by the atmosphere, not the CCD. We are trying to measure the proper motion of Ursa Minor at the Naval Observatory, but the larger pixel size (4-times larger than for HST) has so far prevented a meaningful measurement. Thus, HST's much better resolution is a necessity. o The first requirement is that the astrometry must be carried out in a differential mode. This has traditionally been done by mapping the field distortions in the telescope/camera accurately or by placing the target objects back in the same place on the CCD to within a few pixels. King Etal\ (1998 and work in progress) have developed another technique that measures the position of each star relative to its nearest neighbors, thus making the effect of field distortions on scales larger than the ``neighborhood'' irrelevant. They have shown that this method is very effective at achieving precise relative astrometry with HST, presumably because the distortions over scales of 50--100 pixels are small. They currently achieve a precision of ~0.01 pixel (much better than King Etal\ 1998 for reasons discussed in the next topic) and are continuing to work on improving this. We have fewer stars in our dSph fields, implying bigger ``neighborhoods.'' Thus, to ensure that the impact of field distortions are minimized and that we achieve high relative precisions, we will both make measurements relative to neighbors and place the stars and quasars back on nearly the same pixel for observations at subsequent epochs. Thus, we need to place the fiducial objects (the background QSOs) back on the same place of the PC or STIS CCD at each epoch to within a few pixels and to make all of the observations on each target with a nearly identical roll angle. This angle is not pre-determined, but will become fixed once the first-epoch observations are made. Although the associated overheads are high, we feel that this requirement is very important. The field distortions of the PC or STIS are not known to sufficient precision for 0.4 milli-arcsec epoch^-1 positions to be determined unless true differential observations are obtained. R. Gilliland says that we can expect +/ -2 pixels RMS positioning with roll angle positioning to a few arcmin-- this is adequate for our purposes. o The second requirement is that the PSF must be well sampled. We know that the WFPC2 CCDs do not have uniform sensitivity across a pixel. In the worst cases, the sensitivity may vary by up to 5 percent across a single pixel. This has serious implications for a program designed to measure positions to an accuracy of better than 1\ pixel with critically- sampled images. Because HST is undersampled even with the Planetary Camera or STIS, we must deal with this problem. Meylan Etal\ (GO 5912) have designed a solution that requires 10 individual exposures (of 160 sec each) per epoch. The telescope will be offset according to a pattern involving 0.5 and 0.7 pixel offsets. A similar strategy will allow us to effectively oversample the images as required to carry out high-precision astrometry. Gilliland was able to achieve 0.024 pixel centroiding with longer (more cosmic rays) undithered data. We will remove cosmic rays by taking two exposures at each spatial position. King Etal\ (work in progress) have achieved a precision of ~0.01 pixel using the Meylan Etal\ (GO 5912) dithered data. The main advance over King Etal\ (1998) has been the measurement and elimination of systematic centroiding errors depending on the location of the star with respect to the center of the pixels. These errors have an amplitude of about 0.05 pixel and presumably arise because of the undersampling. However, they can be eliminated with careful dithering and will probably be smaller with STIS (see below). o The last requirement is for a distant reference frame. This has been solved in the present case by centering the field on previously-identified background quasars. Based on our experience with other high-latitude HST observations, it is also very likely that we shall have 3-5 galaxies in the field with sharp cores. These too can be used to help define the zero point. Note that the exposure times are designed to obtain 3000-5000 counts (data numbers) per main- sequence turnoff star in the target galaxies. This will ensure that the quasar images will have the > 10^5 counts necessary to obtain the requisite centroid position. We are proposing to move from WFPC2 imaging to STIS imaging for the new fields whose first-epoch observations we will obtain in Cycle 8. (Second and third epoch observations of our Cycle 7 fields will still be made with WFPC2 to match the geometric field distortions of the first-epoch observations.) STIS imaging offers a number of advantages for our program: it has a higher throughput, a larger field than the PC, and will be available after WFPC2 has been replaced in ~2002. However, we believe that the most important advantage is that it will have smaller centroiding errors due to smaller variations in sensitivity across a pixel. The WFPC2 CCDs are front-side illuminated and light passing through and around the gate structure on the front-side may well be the limiting factor for the quality of WFPC2 astrometry. STIS, with its back- side illuminated CCD, should produce more precise astrometry. All of the reference QSOs are located within about one core radius of their respective foreground dSph galaxy (typically < 15'). We have scaled counts of ground-based and HST images to determine that we shall observe 50-300 stars brighter than 0.5 mag of the turnoff points of Scl, UMi and Car within the field of view (the worst case is Car). Such stars will all have >= 3000 total counts. For Fornax, we shall obtain only about 1000 counts 0.5 mag below the turnoff point, but for more than 1000 stars. Since the ensemble of dSph stars will be used to define the mean proper motion of the galaxies, we shall readily achieve sufficiently high total counts to obtain precise mean positions for the stars in each field at each epoch. vspace* To summarize, if we obtain the same roll angle for each epoch for a given field, attain adequate S/N in the QSO and the sum of the stars in the galaxies, and we obtain our data using the dithering pattern described above, then we should easily achieve precisions of 0.01 pixel. This translates into a 1-sigma error of 0.23 mas/yr in the resulting proper motions if we make observations over a timespan of two years for two quasars in each dSph. We will attempt to achieve better precision (possibly 2 times better) based on our experience with ground-based astrometric measurements. Furthermore, we expect to improve this result by averaging 4 QSOs in Fornax and by achieving a longer time baseline for all of the galaxies. Therefore, we expect to achieve a 1-sigma error of 0.06--0.20 mas/yr for each program galaxy. vspace* To minimize telescope time, we shall observe with only one filter, 50CCD (i.e., no filter) with STIS and F606W with WFPC2 (in Cycles 9 and 10). These combinations provide very high throughput and, thus, the best S/N for a given exposure time. The individual exposure times do not saturate any of the QSOs, yet provide adequate counts for the turnoff once the multiple exposures are combined. The number of orbits per QSO field is based on our Cycle 7 Phase 2 submission, which takes into account the real overheads. More QSO's are known behind our target galaxies than we propose to observe with HST. We have chosen to observe only one new field in Scl, UMi, and Car during Cycle 8, making a total of two fields per galaxy. We have also requested two additional fields for Fornax (we have one scheduled for Cycle 7) to mitigate the larger distance of that galaxy (130 kpc), and thus the need for better precision, compared to the other three galaxies (70-90 kpc). Real Time Justification ----------------------- The Ursa Minor field is in the CVZ. We will add more observations to our dithering patterns here, thus improving our ability to derive coordinates of stars. Once initial observations are made for each field, we require that the roll angles for each subsequent visit be identical to the first-epoch roll angle. We also request a special dithering pattern during each visit consisting of many separate observations per field (more in UMi because of CVZ). As described elsewhere in this proposal, our Cycle 7 objects need to be repeated in Cycles 9 and 10 with WFPC2. Our Cycle 8 objects need to be repeated with STIS. The background quasars were discovered previously using radio, X-ray and optical techniques. Two QSO's are known near the center of UMi (Olszewski), while seven are known behind Car, and four each behind Scl and For (Tinney). The quasars have been confirmed spectroscopically; their redshifts range from 0.3 - 3.1. No future ground-based observations are needed in support of observations of these four galaxies. However, future searches may be carried out to search for quasars near other dSph galaxies or outer-halo clusters for future HST astrometric observations. Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 UMI-QSO- GALAXY, DWARF RA=15H 08M 37.5S +/-0.1S, J2000 V = 19.8 1508+672 SPHEROIDAL, QSO, QUASAR DEC=67D 16' 33.5" +/- 0.5" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this field in Cycle 8. Coords are just fine. 2 SCL-QSO-0100 GALAXY, DWARF RA=01H 00M 32.60S +/-0.1S, DEC=- J2000 V = 20.2 -336 SPHEROIDAL, QSO, QUASAR 33D 38' 32.0" +/- 0.5" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this field in Cycle 8. Coords are just fine. 3 FOR-QSO-0238 GALAXY, DWARF RA=02H 38M 43.80S +/-0.1S, DEC=- J2000 V = 20.0 -34439 SPHEROIDAL, QSO, QUASAR 34D 43' 53.0" +/- 0.5" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this in Cycle8. Coords are just fine 4 FOR-QSO-0240 GALAXY, DWARF RA=02H 40M 38.70S +/-0.1S, DEC=- J2000 V = 20.0 -34390 SPHEROIDAL, QSO, QUASAR 34D 38' 58.0" +/- 0.5" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this in Cycle8. Coords are just fine 5 CAR-QSO-0641 GALAXY, DWARF RA=06H 40M 59.20S +/-0.1S, DEC=- J2000 V = 20.3 -50557 SPHEROIDAL, QSO, QUASAR 50D 55' 41.0" +/- 0.5" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this in Cycle 8. Coords are just fine. 6 QSO-UMI- Galaxy, Dwarf RA=15H 08M 40.41S +/- 0.1S, J2000 V = 18.6 1508+67 Spheroidal, QSO, Quasar DEC=+67D 17' 47.5" +/- 1.0" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this field in Cycle 7. Coords are just fine. 7 FOR-QSO-0240 Galaxy, Dwarf RA=02H 40M 07.7S +/- 0.1S, DEC=- J2000 V = 19.1 -3434 Spheroidal, QSO, Quasar 34D 34' 20.0" +/- 1.0" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: two QSOs 5 arcsec apart. There is a QSO centered in this field of a dwarf spheroidal. We observed this field in Cycle 7. Coords are just fine. 8 CAR-QSO-0641 Galaxy, Dwarf RA=06H 41M 51.6S +/- 0.1S, DEC=- J2000 V = 20.8 -5057 Spheroidal, QSO, Quasar 50D 57' 13" +/- 1.0" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this field in Cycle 7. Coords are just fine. 9239( 6) - 12/04/01 14:57 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 9 SCL-QSO-0100 Galaxy, Dwarf RA=01H 00M 25.3S +/- 0.1S, DEC=- J2000 V = 20.4 -3341 Spheroidal, QSO, Quasar 33D 41' 07.0" +/- 1.0" B-V = 0.2 Coordinate Source: OTHER_SOURCE Comments: there is a QSO centered in this field of a dwarf spheroidal. We observed this field in Cycle 7. Coords are just fine. Pattern_Data: 9239( 6) - 12/04/01 14:57 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFPC2-LINE LINE Pattern_Purpose DITHER DITHER Number_Of_Points 4 2 Point_Spacing 0.0805 0.0683 Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 45 180 Center_Pattern NO NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFPC2-LINE LINE Pattern_Purpose DITHER DITHER Number_Of_Points 2 2 Point_Spacing 0.1610 0.0683 Coordinate_Frame POS-TARG POS-TARG Pattern_Orient 45 180 Center_Pattern NO NO ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 6] Visit: 01 Visit Priority: Visit Requirements: ORIENT 263.81D TO 263.81D On Hold Comments: Additional Comments: same orientation as a cycle8 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 207.0 S 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 2 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 207.0 S POS TARG +0.0634, +0.0634 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 3 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 207.0 S Pos Targ +0.1268, +0.1268 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 4 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 207.0 S POS TARG +0.1902, +0.1902 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 5 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 213.9 S POS TARG -0.0697, -0.0951 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 6 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 213.9 S POS TARG -0.1078, -0.1331 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 213.9 S POS TARG -0.1965, -0.1711 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 UMI-QSO-150 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 3 213.9 S POS TARG -0.2345, -0.2092 8+672 CD ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 7] Visit: 02 Visit Priority: Visit Requirements: ORIENT 335.64D TO 335.64D On Hold Comments: Additional Comments: same orientation as a cycle8 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 2 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.0634, +0.0634 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 3 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S Pos Targ +0.1268, +0.1268 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 4 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.1902, +0.1902 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 581.7 S POS TARG -0.0697, -0.0951 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 581.7 S POS TARG -0.1078, -0.1331 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 9 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 581.7 S POS TARG -0.1965, -0.1711 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 10 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 611.1 S POS TARG -0.2345, -0.2092 0-336 CD ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 8] Visit: 03 Visit Priority: Visit Requirements: ORIENT 114.6654D TO 114.6654D On Hold Comments: Additional Comments: same orientation as a cycle8 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 2 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.0634, +0.0634 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 3 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S Pos Targ +0.1268, +0.1268 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 4 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.1902, +0.1902 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.0697, -0.0951 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.1078, -0.1331 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 9 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.1965, -0.1711 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 10 FOR-QSO-023 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.2345, -0.2092 8-34439 CD ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 9] Visit: 04 Visit Priority: Visit Requirements: ORIENT 77.35D TO 77.35D On Hold Comments: Additional Comments: same orientation as a cycle8 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 2 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.0634, +0.0634 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 3 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S Pos Targ +0.1268, +0.1268 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 4 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.1902, +0.1902 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 5 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.0697, -0.0951 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 6 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.1078, -0.1331 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.1965, -0.1711 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 FOR-QSO-024 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.2345, -0.2092 0-34390 CD ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 10] Visit: 05 Visit Priority: Visit Requirements: ORIENT 101.9370D TO 101.9370D On Hold Comments: Additional Comments: same orientation as a cycle8 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 609.3 S 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 2 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 609.3 S POS TARG +0.0634, +0.0634 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 3 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 609.3 S Pos Targ +0.1268, +0.1268 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 4 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 609.3 S POS TARG +0.1902, +0.1902 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 5 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 629.4 S POS TARG -0.0697, -0.0951 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 6 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 629.4 S POS TARG -0.1078, -0.1331 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 629.4 S POS TARG -0.1965, -0.1711 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 CAR-QSO-064 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 629.4 S POS TARG -0.2345, -0.2092 1-50557 CD ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 11] Visit: 06 Visit Priority: Visit Requirements: CVZ ORIENT 236.00D TO 236.31D On Hold Comments: Additional Comments: same orientation as a cycle7 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 QSO-UMI-150 WFPC2 IMAGE PC1-FIX F606W CR-SPLIT=NO 4 160. S PATTERN 1 8+67 ------------------------------------------------------------------------------------------------------------------------------------ 2 QSO-UMI-150 WFPC2 IMAGE PC1-FIX F606W CR-SPLIT=NO 1 160. S PATTERN 2 8+67 ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 12] Visit: 07 Visit Priority: Visit Requirements: ORIENT 111.71D TO 111.71D On Hold Comments: Additional Comments: same orientation as a cycle7 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 FOR-QSO-024 WFPC2 IMAGE PC1-FIX F606W CR-SPLIT=NO 2 160. S PATTERN 1 0-3434 ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 13] Visit: 08 Visit Priority: Visit Requirements: ORIENT 107.66D TO 107.66D On Hold Comments: Additional Comments: same orientation as a cycle7 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 9 CAR-QSO-064 WFPC2 IMAGE PC1-FIX F606W CR-SPLIT=NO 2 160. S PATTERN 1 1-5057 ------------------------------------------------------------------------------------------------------------------------------------ 10 CAR-QSO-064 WFPC2 IMAGE PC1-FIX F606W CR-SPLIT=NO 2 160. S 1-5057 ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 14] Visit: 09 Visit Priority: Visit Requirements: ORIENT 337.4631D TO 337.4631D On Hold Comments: Additional Comments: same orientation as a cycle9 image, for proper motions Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 2 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.0634, +0.0634 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 3 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S Pos Targ +0.1268, +0.1268 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 4 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 567.6 S POS TARG +0.1902, +0.1902 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 7 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.0697, -0.0951 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 8 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.1078, -0.1331 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 9 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.1965, -0.1711 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 10 SCL-QSO-010 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=3 1 586.5 S POS TARG -0.2345, -0.2092 0-3341 CD ------------------------------------------------------------------------------------------------------------------------------------ 9239( 6) - 12/04/01 14:57 - [ 15] Summary Form for Proposal 9239 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 50CCD PC1-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD WFPC2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO CR-SPLIT=3 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 263.81D TO 263.81D POS TARG +0.0634, +0.0634 Pos Targ +0.1268, +0.1268 POS TARG +0.1902, +0.1902 POS TARG -0.0697, -0.0951 POS TARG -0.1078, -0.1331 POS TARG -0.1965, -0.1711 POS TARG -0.2345, -0.2092 ORIENT 335.64D TO 335.64D ORIENT 114.6654D TO 114.6654D ORIENT 77.35D TO 77.35D ORIENT 101.9370D TO 101.9370D CVZ ORIENT 236.00D TO 236.31D PATTERN 1 PATTERN 2 ORIENT 111.71D TO 111.71D ORIENT 107.66D TO 107.66D ORIENT 337.4631D TO 337.4631D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names UMI-QSO-1508+672 SCL-QSO-0100-336 FOR-QSO-0238-34439 FOR-QSO-0240-34390 CAR-QSO-0641-50557 QSO-UMI-1508+67 FOR-QSO-0240-3434 CAR-QSO-0641-5057 SCL-QSO-0100-3341 ------------------------------------------------------------------------------------------------------------------------------------