The WFC3 Galactic Bulge Treasury Program: Populations, Formation History, and Planets
Exploiting the full power of the Wide Field Camera 3 (WFC3), we propose deep panchromatic imaging of four fields in the Galactic bulge. These data will enable a sensitive dissection of its stellar populations, using a new set of reddening-free photometric indices we have constructed from broad-band filters across UV, optical, and near-IR wavelengths. These indices will provide accurate temperatures and metallicities for hundreds of thousands of individual bulge stars. Proper motions of these stars derived from multi-epoch observations will allow separation of pure bulge samples from foreground disk contamination. Our catalogs of proper motions and panchromatic photometry will support a wide range of bulge studies.
Using these photometric and astrometric tools, we will reconstruct the detailed star-formation history as a function of position within the bulge, and thus differentiate between rapid- and extended-formation scenarios. We will also measure the dependence of the stellar mass function on metallicity, revealing how the characteristic mass of star formation varies with chemistry. Our sample of bulge stars with accurate metallicities will include 12 candidate hosts of extrasolar planets. Planet frequency is correlated with metallicity in the solar neighborhood; our measurements will extend this knowledge to a remote environment with a very distinct chemistry.
Our proposal also includes observations of six well-studied globular and open star clusters; these observations will serve to calibrate our photometric indices, provide empirical population templates, and transform the theoretical isochrone libraries into the WFC3 filter system. Besides enabling our own program, these products will provide powerful new tools for a host of other stellar-population investigations with HST/WFC3. We will deliver all of the products from this Treasury Program to the community in a timely fashion.
The program is straightforward. We will image 4 fields in the bulge with 5 WFC3 filters (UVIS/F390W, UVIS/F555W, UVIS/F814W, IR/F110W, IR/F160W), 6 Galactic star clusters with the same filters, and a disk field with 3 filters (UVIS/F555W, IR/F110W, IR/F160W). We spend 8 orbits on each of the bulge fields, 3 orbits on each of the clusters, and 3 orbits on the disk. Exposure times are staggered to increase dynamic range. Orientation is constrained for the BULGE-SWEEPS field, due to existing extrasolar planet hosts in this field that must fit within the WFC3 FOV; these hosts were originally discovered in the larger ACS/WFC FOV.
Five of the six star clusters in GO-11664 are also being imaged with WFC3 in program GO-11729. These star clusters are intended as population templates to the community, and the data are non-proprietary in each program. To maximize the scientific return to the community, it would be useful to schedule these visits at the same orientation, although there is no formal mechanism in the APT to designate "SAME ORIENT AS..." with a pointer to a visit in another program. Although the two programs could agree upon arbitrary orients for each cluster, designating such orients up front would introduce significant scheduling constraints. Instead, we are requesting here that these visits be scheduled at the same orient. The two programs are already using the same target coordinates for the clusters in common.
The visits that should be paired at the same orient are:
TARGET....................GO-11664 VISIT....................GO-11729 VISIT
NGC5927....................52....................5
NGC104/47TUC....................53....................2
NGC6752....................54....................3
NGC6391/M92....................55 ....................4
NGC6791....................56....................1
RESOLVED STELLAR POPULATIONS
0
false
0.0
0.0
true
false
false
false
false
false
SUPPORTED
GALAXY
BULGE
J2000
17 58 59.6000
-29 12 11.84
J2000
GALAXY
BULGE
J2000
17 54 41.0000
-29 49 32.00
J2000
GALAXY
BULGE
J2000
17 48 11.0000
-37 07 21.00
J2000
GALAXY
BULGE
J2000
18 03 11.0000
-29 56 30.00
J2000
GALAXY
DISK
J2000
19 00 21.8000
+04 25 43.00
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
18 04 49.9200
-30 03 22.18
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
15 28 1.7400
-50 40 44.30
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
00 24 15.2600
-72 05 47.93
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
19 11 2.8000
-60 00 51.68
J2000
STELLAR CLUSTER
GLOBULAR CLUSTER
J2000
17 17 7.0500
+43 07 58.25
J2000
STELLAR CLUSTER
OPEN CLUSTER
J2000
19 20 53.0000
+37 46 30.00
J2000
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
WFC3/IR
Imaging
No
No
F110W
WFC3/IR
Imaging
No
No
F160W
WFC3/UVIS
Imaging
No
No
F390W
WFC3/UVIS
Imaging
No
No
F555W
WFC3/UVIS
Imaging
No
No
F814W
Same orient constraint links visits (01 02 03 04)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F390W (C) visit
1 short exposure offset by (+0.75,-20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,-20) pixels.
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Same orient constraint links visits (01 02 03 04)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
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1 short exposure offset by (-0.75,+20) pixels
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Same orient constraint links visits (01 02 03 04)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F814W (I; orbit 1) and F555W (V; orbit 2).
7 exposures per orbit.
2 short exposures at (+0.75,-20) and (-0.75,+20), with exposure times of 1 sec and 10 sec, respectively.
4 medium exposures (348 sec each) in a 4-point dither pattern to resample the PSF, but with the first two offset by (0,-40) and the second two offset by (0,0).
1 long exposure (740 sec in orbit 1, 880 sec in orbit 2) offset by (0,+40).
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:max-dark-utilization 1920
:low-sky "N"
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0
Same orient constraint links visits (01 02 03 04)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F110W (J) and F160W (H).
Two full-frame tiles and two 512x512 subarray tiles to mosaic the UVIS.
Each IR tile is dithered 2x2 for PSF resampling, so 16 images per filter in this visit.
A full-frame tile is paired to its nearest subarray tile in each orbit to avoid multiple GS-ACQs within a given orbit, but note that the 2nd orbit has a GS-ACQ instead of a GS-REACQ because of the distance between the right-hand and left-hand pairs of IR tiles.
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The large distances between the centers of the IR tiles causes an APT warning, but this is not a problem.
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Filter switching is done H1-J1-J2-H2-H3-J3-J4-H4 in each tile to minimize filter wheel motions.
(Tic-Visit
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true
2
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Same orient constraint links visits (11 12 13 14)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
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1 short exposure offset by (+0.75,-20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,-20) pixels.
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Same orient constraint links visits (11 12 13 14)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
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1 short exposure offset by (-0.75,+20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,+20) pixels.
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Same orient constraint links visits (11 12 13 14)
The scheduling data was generated by CASM 17.2.
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7 exposures per orbit.
2 short exposures at (+0.75,-20) and (-0.75,+20), with exposure times of 1 sec and 10 sec, respectively.
4 medium exposures (348 sec each) in a 4-point dither pattern to resample the PSF, but with the first two offset by (0,-40) and the second two offset by (0,0).
1 long exposure (740 sec in orbit 1, 880 sec in orbit 2) offset by (0,+40).
(Tic-Visit
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Same orient constraint links visits (11 12 13 14)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F110W (J) and F160W (H).
Two full-frame tiles and two 512x512 subarray tiles to mosaic the UVIS.
Each IR tile is dithered 2x2 for PSF resampling, so 16 images per filter in this visit.
A full-frame tile is paired to its nearest subarray tile in each orbit to avoid multiple GS-ACQs within a given orbit, but note that the 2nd orbit has a GS-ACQ instead of a GS-REACQ because of the distance between the right-hand and left-hand pairs of IR tiles.
STEP* sample sequences are used in both subarray and full-frame tiles because this increases dynamic range.
The large distances between the centers of the IR tiles causes an APT warning, but this is not a problem.
The dither sequence hits every position twice (once per filter), and does so in consecutive exposures to reduce pointing maneuver overheads.
Filter switching is done H1-J1-J2-H2-H3-J3-J4-H4 in each tile to minimize filter wheel motions.
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Same orient constraint links visits (21 22 23 24 27 29)
The scheduling data was generated by CASM 18.1.
CASM was run in Phase II mode.
F390W (C) visit
1 short exposure offset by (+0.75,-20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,-20) pixels.
1268090345000
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:si-bright-earth-limb-angle 20.0
:data-volume 1443728
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(Tic-Obset
:proposal-id 11664
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:obset-id "21"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "21"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2926
:al-overhead-at-end 116
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "21"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3066
:al-overhead-at-end 116
:internal-dur-at-end 354
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (21 22 23 24 27 29)
The scheduling data was generated by CASM 18.1.
CASM was run in Phase II mode.
F390W (C) visit
1 short exposure offset by (-0.75,+20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,+20) pixels.
1268522004000
271.0
(Tic-Visit
:proposal-id 11664
:visit-id "22"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:13.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 1443728
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "22"
:obset-id "22"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "22"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2926
:al-overhead-at-end 116
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "22"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3066
:al-overhead-at-end 116
:internal-dur-at-end 354
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (21 22 23 24 27 29)
The scheduling data was generated by CASM 18.1.
CASM was run in Phase II mode.
F390W (C) visit
1 short exposure offset by (-0.75,+20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,+20) pixels.
(Tic-Visit
:proposal-id 11664
:visit-id "27"
:proposal-version -1
:trans-version "20100218"
:date "16-Mar-2010 14:15:28.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0
:CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 1443728
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "27"
:obset-id "27"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "27"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2926
:al-overhead-at-end 116
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3301
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "27"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 3066
:al-overhead-at-end 116
:internal-dur-at-end 354
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3301
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (21 22 23 24 27 29)
The scheduling data was generated by CASM 18.1.
CASM was run in Phase II mode.
F814W (I; orbit 1) and F555W (V; orbit 2).
7 exposures per orbit.
2 short exposures at (+0.75,-20) and (-0.75,+20), with exposure times of 1 sec and 10 sec, respectively.
4 medium exposures (348 sec each) in a 4-point dither pattern to resample the PSF, but with the first two offset by (0,-40) and the second two offset by (0,0).
1 long exposure (740 sec in orbit 1, 880 sec in orbit 2) offset by (0,+40).
1268078853000
271.0
(Tic-Visit
:proposal-id 11664
:visit-id "23"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:15.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 4042464
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "23"
:obset-id "23"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "23"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2923
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "23"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3063
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (21 22 23 24 27 29)
The scheduling data was generated by CASM 18.1.
CASM was run in Phase II mode.
F110W (J) and F160W (H).
Two full-frame tiles and two 512x512 subarray tiles to mosaic the UVIS.
Each IR tile is dithered 2x2 for PSF resampling, so 16 images per filter in this visit.
A full-frame tile is paired to its nearest subarray tile in each orbit to avoid multiple GS-ACQs within a given orbit, but note that the 2nd orbit has a GS-ACQ instead of a GS-REACQ because of the distance between the right-hand and left-hand pairs of IR tiles.
STEP* sample sequences are used in both subarray and full-frame tiles because this increases dynamic range.
The large distances between the centers of the IR tiles causes an APT warning, but this is not a problem.
The dither sequence hits every position twice (once per filter), and does so in consecutive exposures to reduce pointing maneuver overheads.
Filter switching is done H1-J1-J2-H2-H3-J3-J4-H4 in each tile to minimize filter wheel motions.
1268268864000
271.0
(Tic-Visit
:proposal-id 11664
:visit-id "24"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:21.0"
:trans-errors '(:WARNINGS 16 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "30"
:si-bright-earth-limb-angle 20.0
:data-volume 2919248
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "24"
:obset-id "24"
:pcs-mode "FGS"
)
(Tic-Obset
:proposal-id 11664
:visit-id "24"
:obset-id "C4"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "24"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2847
:al-overhead-at-end 0
:internal-dur-at-end 660
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "24"
:orbit-number 2
:pcs-time 333
:si-vis-utilization 2846
:al-overhead-at-end 0
:internal-dur-at-end 687
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (21 22 23 24 27 29)
The scheduling data was generated by CASM 18.1.
CASM was run in Phase II mode.
F110W (J) and F160W (H).
Two full-frame tiles and two 512x512 subarray tiles to mosaic the UVIS.
Each IR tile is dithered 2x2 for PSF resampling, so 16 images per filter in this visit.
A full-frame tile is paired to its nearest subarray tile in each orbit to avoid multiple GS-ACQs within a given orbit, but note that the 2nd orbit has a GS-ACQ instead of a GS-REACQ because of the distance between the right-hand and left-hand pairs of IR tiles.
STEP* sample sequences are used in both subarray and full-frame tiles because this increases dynamic range.
The large distances between the centers of the IR tiles causes an APT warning, but this is not a problem.
The dither sequence hits every position twice (once per filter), and does so in consecutive exposures to reduce pointing maneuver overheads.
Filter switching is done H1-J1-J2-H2-H3-J3-J4-H4 in each tile to minimize filter wheel motions.
(Tic-Visit
:proposal-id 11664
:visit-id "29"
:proposal-version -1
:trans-version "20100218"
:date "16-Mar-2010 14:11:11.0"
:trans-errors '(:WARNINGS 16 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0
:CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "30"
:si-bright-earth-limb-angle 20.0
:data-volume 2919248
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "29"
:obset-id "29"
:pcs-mode "FGS"
)
(Tic-Obset
:proposal-id 11664
:visit-id "29"
:obset-id "A9"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "29"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2847
:al-overhead-at-end 0
:internal-dur-at-end 660
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3301
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "29"
:orbit-number 2
:pcs-time 333
:si-vis-utilization 2846
:al-overhead-at-end 0
:internal-dur-at-end 687
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3301
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (31 32 33 34)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F390W (C) visit
1 short exposure offset by (+0.75,-20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,-20) pixels.
1267894667000
269.0
(Tic-Visit
:proposal-id 11664
:visit-id "31"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:23.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 1443728
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "31"
:obset-id "31"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "31"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2926
:al-overhead-at-end 116
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "31"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3066
:al-overhead-at-end 116
:internal-dur-at-end 354
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (31 32 33 34)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F390W (C) visit
1 short exposure offset by (-0.75,+20) pixels
4 long exposures in a 4-point dither pattern to resample the PSF, but offset by (0,+20) pixels.
1267906179000
269.0
(Tic-Visit
:proposal-id 11664
:visit-id "32"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:24.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 1443728
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "32"
:obset-id "32"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "32"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2926
:al-overhead-at-end 116
:internal-dur-at-end 0
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "32"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3066
:al-overhead-at-end 116
:internal-dur-at-end 354
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (31 32 33 34)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F814W (I; orbit 1) and F555W (V; orbit 2).
7 exposures per orbit.
2 short exposures at (+0.75,-20) and (-0.75,+20), with exposure times of 1 sec and 10 sec, respectively.
4 medium exposures (348 sec each) in a 4-point dither pattern to resample the PSF, but with the first two offset by (0,-40) and the second two offset by (0,0).
1 long exposure (740 sec in orbit 1, 880 sec in orbit 2) offset by (0,+40).
1267917719000
269.0
(Tic-Visit
:proposal-id 11664
:visit-id "33"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:27.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 4042464
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "33"
:obset-id "33"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "33"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2923
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "33"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3063
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
true
2
0
Same orient constraint links visits (31 32 33 34)
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F110W (J) and F160W (H).
Two full-frame tiles and two 512x512 subarray tiles to mosaic the UVIS.
Each IR tile is dithered 2x2 for PSF resampling, so 16 images per filter in this visit.
A full-frame tile is paired to its nearest subarray tile in each orbit to avoid multiple GS-ACQs within a given orbit, but note that the 2nd orbit has a GS-ACQ instead of a GS-REACQ because of the distance between the right-hand and left-hand pairs of IR tiles.
STEP* sample sequences are used in both subarray and full-frame tiles because this increases dynamic range.
The large distances between the centers of the IR tiles causes an APT warning, but this is not a problem.
The dither sequence hits every position twice (once per filter), and does so in consecutive exposures to reduce pointing maneuver overheads.
Filter switching is done H1-J1-J2-H2-H3-J3-J4-H4 in each tile to minimize filter wheel motions.
1268430002000
269.0
(Tic-Visit
:proposal-id 11664
:visit-id "34"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:31.0"
:trans-errors '(:WARNINGS 16 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "30"
:si-bright-earth-limb-angle 20.0
:data-volume 2919248
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "34"
:obset-id "34"
:pcs-mode "FGS"
)
(Tic-Obset
:proposal-id 11664
:visit-id "34"
:obset-id "D4"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "34"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2847
:al-overhead-at-end 0
:internal-dur-at-end 660
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "34"
:orbit-number 2
:pcs-time 333
:si-vis-utilization 2846
:al-overhead-at-end 0
:internal-dur-at-end 687
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3267
:pcs-gap 0
)
true
2
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
F110W (J), F160W (H), and F555W (V).
Two full-frame IR tiles and two 512x512 subarray IR tiles to mosaic the UVIS.
Each IR tile is dithered 2x2 for PSF resampling, so 16 images per filter in this visit.
A full-frame tile is paired to its nearest subarray tile in each orbit to avoid multiple GS-ACQs within a given orbit, but note that the 2nd orbit has a GS-ACQ instead of a GS-REACQ because of the distance between the right-hand and left-hand pairs of IR tiles.
STEP* sample sequences are used in both subarray and full-frame tiles because this increases dynamic range.
The large distances between the centers of the IR tiles causes an APT warning, but this is not a problem.
The dither sequence hits every position twice (once per filter), and does so in consecutive exposures to reduce pointing maneuver overheads.
Filter switching is done H1-J1-J2-H2-H3-J3-J4-H4 in each tile to minimize filter wheel motions.
7 F555W exposures in orbit 3.
2 short exposures at (+0.75,-20) and (-0.75,+20), with exposure times of 1 sec and 10 sec, respectively.
4 medium exposures (348 sec each) in a 4-point dither pattern to resample the PSF, but with the first two offset by (0,-40) and the second two offset by (0,0).
1 long exposure (880 sec) offset by (0,+40).
1255569243000
81.92542001585912
(Tic-Visit
:proposal-id 11664
:visit-id "41"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:40.0"
:trans-errors '(:WARNINGS 16 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 4940496
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "41"
:obset-id "41"
:pcs-mode "FGS"
)
(Tic-Obset
:proposal-id 11664
:visit-id "41"
:obset-id "A1"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "41"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2847
:al-overhead-at-end 0
:internal-dur-at-end 660
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3236
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "41"
:orbit-number 2
:pcs-time 333
:si-vis-utilization 2846
:al-overhead-at-end 0
:internal-dur-at-end 709
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3236
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "41"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3033
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3236
:pcs-gap 0
)
true
3
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
6 F390W exposures: 2x 40 sec, 2x 348 sec, 2x 715 sec, at postargs of (0,0) and (+2,+2) pixels.
4 F555W exposures: 1 sec at (0,0) pixels, 50 sec at (+2,+2) pixels, 2x 665 sec at (0,0) and (+2,+2) pixels.
4 F814W exposures: 1 sec at (0,0) pixels, 50 sec at (+2,+2) pixels, 2x 370 sec at (0,0) and (+2,+2) pixels.
In each IR filter, there are 4 exposures in a 2x2 PSF-resampling dither pattern in one corner of the UVIS field, and 2 in a 1x2 dither pattern at the other corner.
The exposures in the 1x2 dither pattern will not go as deep but will increase the number of bright stars, which are relatively rare. In the significant overlap between the two IR tiles, the total exposure time will be 1246 sec in each IR filter.
(Tic-Visit
:proposal-id 11664
:visit-id "51"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:46.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 5887776
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "51"
:obset-id "51"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "51"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2948
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3283
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "51"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3086
:al-overhead-at-end 118
:internal-dur-at-end 702
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3283
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "51"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3049
:al-overhead-at-end 0
:internal-dur-at-end 592
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3283
:pcs-gap 0
)
true
3
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
***Please schedule at same orient as Visit 5 in GO-11729 if possible.***
6 F390W exposures: 2x 40 sec, 2x 348 sec, 2x 800 sec, at postargs of (0,0) and (+2,+2) pixels.
4 F555W exposures: 1 sec at (0,0) pixels, 50 sec at (+2,+2) pixels, 2x 665 sec at (0,0) and (+2,+2) pixels.
4 F814W exposures: 1 sec at (0,0) pixels, 50 sec at (+2,+2) pixels, 2x 455 sec at (0,0) and (+2,+2) pixels.
In each IR filter, there are 4 exposures in a 2x2 PSF-resampling dither pattern in one corner of the UVIS field, and 2 in a 1x2 dither pattern at the other corner.
The exposures in the 1x2 dither pattern will not go as deep but will increase the number of bright stars, which are relatively rare. In the significant overlap between the two IR tiles, the total exposure time will be 1246 sec in each IR filter.
In addition, there are 3 256x256 subarray exposures in each filter, using 15-read RAPID sequences, tiling a small region to obtain photometry of the brighter stars that will saturate immediately in the full-frame IR exposures.
(Tic-Visit
:proposal-id 11664
:visit-id "52"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:52.0"
:trans-errors '(:WARNINGS 4 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 6002992
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "52"
:obset-id "52"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "52"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 3118
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3453
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "52"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3256
:al-overhead-at-end 118
:internal-dur-at-end 702
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3453
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "52"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3254
:al-overhead-at-end 0
:internal-dur-at-end 351
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3453
:pcs-gap 0
)
false
3
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
***Please schedule at same orient as Visit 2 in GO-11729 if possible.***
6 F390W exposures: 2x 10 sec, 2x 348 sec, 2x 930 sec, at postargs of (0,0) and (+2,+2) pixels.
4 F555W exposures: 0.5 sec at (0,0) pixels, 50 sec at (+2,+2) pixels, 2x 665 sec at (0,0) and (+2,+2) pixels.
4 F814W exposures: 0.5 sec at (0,0) pixels, 50 sec at (+2,+2) pixels, 2x 555 sec at (0,0) and (+2,+2) pixels.
In each IR filter, there are 4 exposures in a 2x2 PSF-resampling dither pattern in one corner of the UVIS field, and 2 in a 1x2 dither pattern at the other corner.
The exposures in the 1x2 dither pattern will not go as deep but will increase the number of bright stars, which are relatively rare. In the significant overlap between the two IR tiles, the total exposure time will be 1246 sec in each IR filter.
In addition, there are 4 256x256 subarray exposures in each filter, using 15-read RAPID sequences, tiling a small region to obtain photometry of the brighter stars that will saturate immediately in the full-frame IR exposures.
(Tic-Visit
:proposal-id 11664
:visit-id "53"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:43:58.0"
:trans-errors '(:WARNINGS 6 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 6041392
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "53"
:obset-id "53"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "53"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 3318
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3658
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "53"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3456
:al-overhead-at-end 118
:internal-dur-at-end 702
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3658
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "53"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3378
:al-overhead-at-end 0
:internal-dur-at-end 393
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3658
:pcs-gap 0
)
false
3
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
***Please schedule at same orient as Visit 3 in GO-11729 if possible.***
6 F390W exposures: 2x 2 sec, 2x 348 sec, 2x 880 sec, at postargs of (0,0) and (+2,+2) pixels.
4 F555W exposures: 0.5 sec at (0,0) pixels, 30 sec at (+2,+2) pixels, 2x 665 sec at (0,0) and (+2,+2) pixels.
4 F814W exposures: 0.5 sec at (0,0) pixels, 30 sec at (+2,+2) pixels, 2x 495 sec at (0,0) and (+2,+2) pixels.
In each IR filter, there are 4 exposures in a 2x2 PSF-resampling dither pattern in one corner of the UVIS field, and 2 in a 1x2 dither pattern at the other corner.
The exposures in the 1x2 dither pattern will not go as deep but will increase the number of bright stars, which are relatively rare. In the significant overlap between the two IR tiles, the total exposure time will be 1246 sec in each IR filter.
In addition, there are 3 256x256 subarray exposures in each filter, using 15-read RAPID sequences, tiling a small region to obtain photometry of the brighter stars that will saturate immediately in the full-frame IR exposures.
(Tic-Visit
:proposal-id 11664
:visit-id "54"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:44:05.0"
:trans-errors '(:WARNINGS 4 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 6002992
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "54"
:obset-id "54"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "54"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 3178
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3517
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "54"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3320
:al-overhead-at-end 118
:internal-dur-at-end 702
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3517
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "54"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3254
:al-overhead-at-end 0
:internal-dur-at-end 351
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3517
:pcs-gap 0
)
false
3
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
***Please schedule at same orient as Visit 4 in GO-11729 if possible.***
6 F390W exposures: 2x 2 sec, 2x 348 sec, 2x 805 sec, at postargs of (0,0) and (+2,+2) pixels.
4 F555W exposures: 0.5 sec at (0,0) pixels, 30 sec at (+2,+2) pixels, 2x 665 sec at (0,0) and (+2,+2) pixels.
4 F814W exposures: 0.5 sec at (0,0) pixels, 20 sec at (+2,+2) pixels, 2x 415 sec at (0,0) and (+2,+2) pixels.
In each IR filter, there are 4 exposures in a 2x2 PSF-resampling dither pattern in one corner of the UVIS field, and 2 in a 1x2 dither pattern at the other corner.
The exposures in the 1x2 dither pattern will not go as deep but will increase the number of bright stars, which are relatively rare. In the significant overlap between the two IR tiles, the total exposure time will be 1246 sec in each IR filter.
In addition, there are 2 256x256 subarray exposures in each filter, using 15-read RAPID sequences, tiling a small region to obtain photometry of the brighter stars that will saturate immediately in the full-frame IR exposures.
1255153015000
64.0
(Tic-Visit
:proposal-id 11664
:visit-id "55"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:44:10.0"
:trans-errors '(:WARNINGS 2 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 5964576
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "55"
:obset-id "55"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "55"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 3018
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3351
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "55"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3150
:al-overhead-at-end 118
:internal-dur-at-end 702
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3351
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "55"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3137
:al-overhead-at-end 0
:internal-dur-at-end 672
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3351
:pcs-gap 0
)
false
3
0
The scheduling data was generated by CASM 17.2.
CASM was run in Phase II mode.
***Please schedule at same orient as Visit 1 in GO-11729 if possible.***
6 F390W exposures: 2x 2 sec, 2x 348 sec, 2x 775 sec, at postargs of (0,0) and (+2,+2) pixels.
4 F555W exposures: 0.5 sec at (0,0) pixels, 30 sec at (+2,+2) pixels, 2x 665 sec at (0,0) and (+2,+2) pixels.
4 F814W exposures: 0.5 sec at (0,0) pixels, 30 sec at (+2,+2) pixels, 2x 390 sec at (0,0) and (+2,+2) pixels.
In each IR filter, there are 4 exposures in a 2x2 PSF-resampling dither pattern in one corner of the UVIS field, and 2 in a 1x2 dither pattern at the other corner.
The exposures in the 1x2 dither pattern will not go as deep but will increase the number of bright stars, which are relatively rare. In the significant overlap between the two IR tiles, the total exposure time will be 1246 sec in each IR filter.
In addition, there are 2 256x256 subarray exposures in each filter, using 15-read RAPID sequences, tiling a small region to obtain photometry of the brighter stars that will saturate immediately in the full-frame IR exposures.
1254952102000
102.0
(Tic-Visit
:proposal-id 11664
:visit-id "56"
:proposal-version -1
:trans-version "20080624"
:date "01-Jul-2008 13:44:15.0"
:trans-errors '(:WARNINGS 2 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 3
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 5926176
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 11664
:visit-id "56"
:obset-id "56"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 11664
:visit-id "56"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2968
:al-overhead-at-end 118
:internal-dur-at-end 670
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "56"
:orbit-number 2
:pcs-time 195
:si-vis-utilization 3110
:al-overhead-at-end 118
:internal-dur-at-end 702
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 11664
:visit-id "56"
:orbit-number 3
:pcs-time 195
:si-vis-utilization 3093
:al-overhead-at-end 0
:internal-dur-at-end 630
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3310
:pcs-gap 0
)
false
3
0