Proposal 14020 (STScI Edit Number: 0, Created: Monday, October 20, 2014 8:09:47 PM EST) - Overview
14020 - WFC3 Photometric Repeatibility
Cycle: 22, Proposal Category: CAL/WFC3
(Availability Mode: RESTRICTED)
INVESTIGATORS
Name
Dr. Peter McCullough (PI) (Contact)
Ms. Catherine Gosmeyer (CoI)
VISITS
Visit Targets used in Visit
Institution
Space Telescope Science Institute
Space Telescope Science Institute
E-Mail
pmcc@stsci.edu
cgosmeyer@stsci.edu
Configurations used in Visit
Orbits Used Last Orbit Planner Run
01
(1) M-35
WFC3/IR
WFC3/UVIS
1
20-Oct-2014 21:09:30.0
OP Current
with Visit?
yes
02
(1) M-35
WFC3/IR
WFC3/UVIS
1
20-Oct-2014 21:09:35.0
yes
03
(1) M-35
WFC3/IR
WFC3/UVIS
1
20-Oct-2014 21:09:40.0
yes
04
(1) M-35
WFC3/IR
WFC3/UVIS
1
20-Oct-2014 21:09:44.0
yes
4 Total Orbits Used
ABSTRACT
The goal of this program is to demonstrate high precision repeatability of photometry using spatial scans. Scans enable two key factors: 1) collecting
millions of photons per exposure, and 2) averaging over hundreds of pixels to reduce flat field and other calibration uncertainties. Because the typical
limit to HST photometric repeatability from one visit to another is slightly better than ~1%, as evidenced by the scatter of measurements of standard
1
Proposal 14020 (STScI Edit Number: 0, Created: Monday, October 20, 2014 8:09:47 PM EST) - Overview
stars, our goal here was to demonstrate ~0.1% photometric repeatability, or failing that, to learn that WFC3 is not capable of providing such
repeatability by the methods that we use in this program. Consequently, a secondary goal of this program is to try various methods and see which is
the best. The goal of 0.1% photometry requires, by Poisson statistics, at least 1,000,000 photons per visit and preferably per exposure, so that a GO
could plan a program in which a single exposure can yield 0.1% photometry. We also wish to test both the UVIS and IR channels in the same orbit.
OBSERVING DESCRIPTION
The phase 2 strategy is rather complicated, so it is written in MS Word and will be described in a WFC3 ISR (McCullough et al. in preparation for
2015).
The outline is as follows. Visits 1 through 4 are identical. Each is spaced about a month apart, so it takes ~3 months to observe all four visits. Each
visit is one HST orbit. The orbit combines UVIS then IR. The UVIS contains pairs of full-frame 2x2 binned exposures and triplets of subarray
exposures. The IR contains subarray exposures; we shift each scan by 1 arcsec perpendicular to the scan in order to illuminate only "virgin" IR pixels
each time and not suffer from the "hook" effect (Deming et al. 2013, Berta et al. 2012) so prominent in time series illuminating the same pixels
repeatedly.
NOTE TO SCHEDULERS: Our science rationale only requires that the visits be spread out uniformly over the ~4 month window of target visibility.
We attempted to accomplish that using BEFORE Feb 1, 2015 for visit 1 and AFTERS for Visits 2, 3, and 4, with values 20-40 days, 50-70 days, and
80-100 days. If you need to violate those a bit to make the four visits schedule before May 1, 2015, then please do.
A few background notes follow.
The buffer is large enough to hold two full-frame UVIS images. Scale from that as needed for planning. We cannot use subarrays and binning at the
same time. That's really limits the number of frames we can obtain in one HST orbit.
The following fit in one HST orbit:
A) a series of 41 exposures (10-s, UVIS C512C subarray unbinned, staring). The overhead for each is ~1 min.
B) a series of 31 exposures (30-s, UVIS C512C subarray unbinned, scanning roundtrip at 0.25"/s).
C) a series of 23 exposures (30-s, UVIS C1K1C subarray unbinned, scanning roundtrip at 0.25"/s).
2
Proposal 14020 (STScI Edit Number: 0, Created: Monday, October 20, 2014 8:09:47 PM EST) - Overview
D) a series of 10 exposures (30-s, UVIS C2K2C subarray unbinned, scanning roundtrip at 0.25"/s). It contains a buffer dump after exposure 8.
Hopefully the following is correct.
(From McCullough & MacKenty, WFC3 ISR 2012-08)
To trail exactly along columns, use 90 degrees for the scan orient (either UVIS or IR).
To trail exactly along rows, use 3.7702 degrees (UVIS) or 0.1738 degrees (IR).
You may wish to scan NOT exactly along rows or columns to get diversity of pixel phase. In particular for the IR detector, uniform pixel phase may
make observations more repeatable in the presence of detector nonlinearity and slight mispointings between visits.
In order to move 1.0 pixel transverse (vertical) to the trail direction, the scan orients for our horizontal scans can be calculated as follows.
UVIS: print,3.7702+(1./(30*0.25/0.0396))*180./!pi
4.07272
IR: print,0.1738+(1./(8.775*1.5/0.135))*180./!pi
0.761449
The lengths of each trail is 189.4 UVIS pixels (~95 binned 2x2), and 97.5 IR pixels.
For the vertical scans:
UVIS: print,270+(1./(30*0.25/0.0396))*180./!pi
270.303
IR: print,270+(1./(8.775*1.5/0.121))*180./!pi
270.527
3
Fixed Targets
Visit
Proposal 14020 - Visit 01 - WFC3 Photometric Repeatibility
Proposal 14020, Visit 01
Diagnostic Status: No Diagnostics
Scientific Instruments: WFC3/IR, WFC3/UVIS
Special Requirements: ORIENT 90D TO 90 D; BEFORE 01-FEB-2015:00:00:00
#
Name
Target Coordinates
Targ. Coord. Corrections
(1)
M-35
RA: 06 09 2.8091 (92.2617046d)
Dec: +24 21 54.23 (24.36506d)
Equinox: J2000
Comments: This object was generated by the targetselector and retrieved from the SIMBAD database.
Tue Oct 21 01:09:47 GMT 2014
Fluxes
V=5.1
An advantage of an open cluster is that it is not too dense like a globular, and an open cluster will contain a lot of (photometrically stable) main sequence stars.
4
Miscellaneous
Reference Frame: SIMBAD
Proposal 14020 - Visit 01 - WFC3 Photometric Repeatibility
#
1
2
3
4
Label
UVIS stare
Target
(1) M-35
Scan Horizo (1) M-35
ntal
Scan Vertica (1) M-35
l
Subarray Sc (1) M-35
an Vertical
Config,Mode,Aperture
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM,
UVIS2-C1K1C-SUB
Exposures
Comments: Three moderately bright stars in this subarray.
5
Subarray Sc (1) M-35
WFC3/UVIS, ACCUM,
an Horizonta
UVIS2-C1K1C-SUB
l
Comments: Three moderately bright stars in this subarray.
6
IR Stare
(1) M-35
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
7
8
9
10
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
Spectral Els.
F621M
F621M
F621M
F621M
F621M
F140W
F140W
F140W
F140W
F140W
Opt. Params.
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BLADE=A
Special Reqs.
Groups
GS ACQ SCENARI Sequence 1-14 Non-I
O BASE1B3
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
POS TARG -4,null; Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 01
5,4.073 Degrees,For Same Obset in Seque
ward
nce 1-14 Non-Int in
Visit 01
SPATIAL SCAN 0.2 Sequence 1-14 Non-I
5,270.303 Degrees,F nt in Visit 01
orward
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
POS TARG 5,15;
Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 01
5,270.303 Degrees,F Same Obset in Seque
orward
nce 1-14 Non-Int in
Visit 01
Exp. Time (Total)/[Actual Dur.]
10 Secs (10 Secs)
[==>]
CR-SPLIT=NO;
FLASH=12;
BLADE=A
POS TARG null,10;
SPATIAL SCAN 0.2
5,4.073 Degrees,For
ward
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
8.774726 Secs (8.775 Secs)
[==>]
SAMP-SEQ=SPARS
10;
NSAMP=2
SAMP-SEQ=SPARS POS TARG -8,-1;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-2;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-3;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-4;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
5
Orbit
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
[1]
[1]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Proposal 14020 - Visit 01 - WFC3 Photometric Repeatibility
11
12
13
14
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
F140W
F140W
F140W
F140W
SAMP-SEQ=SPARS POS TARG -1,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -2,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -3,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -4,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
6
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
Sequence 1-14 Non-I
nt in Visit 01
Same Obset in Seque
nce 1-14 Non-Int in
Visit 01
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Orbit Structure
Proposal 14020 - Visit 01 - WFC3 Photometric Repeatibility
7
Fixed Targets
Visit
Proposal 14020 - Visit 02 - WFC3 Photometric Repeatibility
Proposal 14020, Visit 02
Diagnostic Status: No Diagnostics
Scientific Instruments: WFC3/IR, WFC3/UVIS
Special Requirements: ORIENT 90D TO 90 D; AFTER 01 BY 20 D TO 40 D
#
Name
Target Coordinates
Targ. Coord. Corrections
(1)
M-35
RA: 06 09 2.8091 (92.2617046d)
Dec: +24 21 54.23 (24.36506d)
Equinox: J2000
Comments: This object was generated by the targetselector and retrieved from the SIMBAD database.
Tue Oct 21 01:09:48 GMT 2014
Fluxes
V=5.1
An advantage of an open cluster is that it is not too dense like a globular, and an open cluster will contain a lot of (photometrically stable) main sequence stars.
8
Miscellaneous
Reference Frame: SIMBAD
Proposal 14020 - Visit 02 - WFC3 Photometric Repeatibility
#
1
2
3
4
Label
UVIS stare
Target
(1) M-35
Scan Horizo (1) M-35
ntal
Scan Vertica (1) M-35
l
Subarray Sc (1) M-35
an Vertical
Config,Mode,Aperture
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM,
UVIS2-C1K1C-SUB
Exposures
Comments: Three moderately bright stars in this subarray.
5
Subarray Sc (1) M-35
WFC3/UVIS, ACCUM,
an Horizonta
UVIS2-C1K1C-SUB
l
Comments: Three moderately bright stars in this subarray.
6
IR Stare
(1) M-35
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
7
8
9
10
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
Spectral Els.
F621M
F621M
F621M
F621M
F621M
F140W
F140W
F140W
F140W
F140W
Opt. Params.
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BLADE=A
Special Reqs.
Groups
GS ACQ SCENARI Sequence 1-14 Non-I
O BASE1B3
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
POS TARG -4,null; Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 02
5,4.073 Degrees,For Same Obset in Seque
ward
nce 1-14 Non-Int in
Visit 02
SPATIAL SCAN 0.2 Sequence 1-14 Non-I
5,270.303 Degrees,F nt in Visit 02
orward
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
POS TARG 5,15;
Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 02
5,270.303 Degrees,F Same Obset in Seque
orward
nce 1-14 Non-Int in
Visit 02
Exp. Time (Total)/[Actual Dur.]
10 Secs (10 Secs)
[==>]
CR-SPLIT=NO;
FLASH=12;
BLADE=A
POS TARG null,10;
SPATIAL SCAN 0.2
5,4.073 Degrees,For
ward
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
8.774726 Secs (8.775 Secs)
[==>]
SAMP-SEQ=SPARS
10;
NSAMP=2
SAMP-SEQ=SPARS POS TARG -8,-1;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-2;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-3;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-4;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
9
Orbit
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
[1]
[1]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Proposal 14020 - Visit 02 - WFC3 Photometric Repeatibility
11
12
13
14
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
F140W
F140W
F140W
F140W
SAMP-SEQ=SPARS POS TARG -1,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -2,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -3,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -4,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
10
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
Sequence 1-14 Non-I
nt in Visit 02
Same Obset in Seque
nce 1-14 Non-Int in
Visit 02
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Orbit Structure
Proposal 14020 - Visit 02 - WFC3 Photometric Repeatibility
11
Fixed Targets
Visit
Proposal 14020 - Visit 03 - WFC3 Photometric Repeatibility
Proposal 14020, Visit 03
Diagnostic Status: No Diagnostics
Scientific Instruments: WFC3/IR, WFC3/UVIS
Special Requirements: ORIENT 90D TO 90 D; AFTER 01 BY 50 D TO 70 D
#
Name
Target Coordinates
Targ. Coord. Corrections
(1)
M-35
RA: 06 09 2.8091 (92.2617046d)
Dec: +24 21 54.23 (24.36506d)
Equinox: J2000
Comments: This object was generated by the targetselector and retrieved from the SIMBAD database.
Tue Oct 21 01:09:48 GMT 2014
Fluxes
V=5.1
An advantage of an open cluster is that it is not too dense like a globular, and an open cluster will contain a lot of (photometrically stable) main sequence stars.
12
Miscellaneous
Reference Frame: SIMBAD
Proposal 14020 - Visit 03 - WFC3 Photometric Repeatibility
#
1
2
3
4
Label
UVIS stare
Target
(1) M-35
Scan Horizo (1) M-35
ntal
Scan Vertica (1) M-35
l
Subarray Sc (1) M-35
an Vertical
Config,Mode,Aperture
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM,
UVIS2-C1K1C-SUB
Exposures
Comments: Three moderately bright stars in this subarray.
5
Subarray Sc (1) M-35
WFC3/UVIS, ACCUM,
an Horizonta
UVIS2-C1K1C-SUB
l
Comments: Three moderately bright stars in this subarray.
6
IR Stare
(1) M-35
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
7
8
9
10
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
Spectral Els.
F621M
F621M
F621M
F621M
F621M
F140W
F140W
F140W
F140W
F140W
Opt. Params.
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BLADE=A
Special Reqs.
Groups
GS ACQ SCENARI Sequence 1-14 Non-I
O BASE1B3
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
POS TARG -4,null; Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 03
5,4.073 Degrees,For Same Obset in Seque
ward
nce 1-14 Non-Int in
Visit 03
SPATIAL SCAN 0.2 Sequence 1-14 Non-I
5,270.303 Degrees,F nt in Visit 03
orward
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
POS TARG 5,15;
Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 03
5,270.303 Degrees,F Same Obset in Seque
orward
nce 1-14 Non-Int in
Visit 03
Exp. Time (Total)/[Actual Dur.]
10 Secs (10 Secs)
[==>]
CR-SPLIT=NO;
FLASH=12;
BLADE=A
POS TARG null,10;
SPATIAL SCAN 0.2
5,4.073 Degrees,For
ward
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
8.774726 Secs (8.775 Secs)
[==>]
SAMP-SEQ=SPARS
10;
NSAMP=2
SAMP-SEQ=SPARS POS TARG -8,-1;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-2;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-3;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-4;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
13
Orbit
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
[1]
[1]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Proposal 14020 - Visit 03 - WFC3 Photometric Repeatibility
11
12
13
14
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
F140W
F140W
F140W
F140W
SAMP-SEQ=SPARS POS TARG -1,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -2,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -3,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -4,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
14
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
Sequence 1-14 Non-I
nt in Visit 03
Same Obset in Seque
nce 1-14 Non-Int in
Visit 03
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Orbit Structure
Proposal 14020 - Visit 03 - WFC3 Photometric Repeatibility
15
Fixed Targets
Visit
Proposal 14020 - Visit 04 - WFC3 Photometric Repeatibility
Proposal 14020, Visit 04
Diagnostic Status: No Diagnostics
Scientific Instruments: WFC3/IR, WFC3/UVIS
Special Requirements: ORIENT 90D TO 90 D; AFTER 01 BY 80 D TO 100 D
#
Name
Target Coordinates
Targ. Coord. Corrections
(1)
M-35
RA: 06 09 2.8091 (92.2617046d)
Dec: +24 21 54.23 (24.36506d)
Equinox: J2000
Comments: This object was generated by the targetselector and retrieved from the SIMBAD database.
Tue Oct 21 01:09:48 GMT 2014
Fluxes
V=5.1
An advantage of an open cluster is that it is not too dense like a globular, and an open cluster will contain a lot of (photometrically stable) main sequence stars.
16
Miscellaneous
Reference Frame: SIMBAD
Proposal 14020 - Visit 04 - WFC3 Photometric Repeatibility
#
1
2
3
4
Label
UVIS stare
Target
(1) M-35
Scan Horizo (1) M-35
ntal
Scan Vertica (1) M-35
l
Subarray Sc (1) M-35
an Vertical
Config,Mode,Aperture
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM,
UVIS2-C1K1C-SUB
Exposures
Comments: Three moderately bright stars in this subarray.
5
Subarray Sc (1) M-35
WFC3/UVIS, ACCUM,
an Horizonta
UVIS2-C1K1C-SUB
l
Comments: Three moderately bright stars in this subarray.
6
IR Stare
(1) M-35
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
7
8
9
10
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
Scan Horizo (1) M-35
ntal
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
Spectral Els.
F621M
F621M
F621M
F621M
F621M
F140W
F140W
F140W
F140W
F140W
Opt. Params.
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BIN=2;
BLADE=A
CR-SPLIT=NO;
FLASH=12;
BLADE=A
Special Reqs.
Groups
GS ACQ SCENARI Sequence 1-14 Non-I
O BASE1B3
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
POS TARG -4,null; Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 04
5,4.073 Degrees,For Same Obset in Seque
ward
nce 1-14 Non-Int in
Visit 04
SPATIAL SCAN 0.2 Sequence 1-14 Non-I
5,270.303 Degrees,F nt in Visit 04
orward
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
POS TARG 5,15;
Sequence 1-14 Non-I
SPATIAL SCAN 0.2 nt in Visit 04
5,270.303 Degrees,F Same Obset in Seque
orward
nce 1-14 Non-Int in
Visit 04
Exp. Time (Total)/[Actual Dur.]
10 Secs (10 Secs)
[==>]
CR-SPLIT=NO;
FLASH=12;
BLADE=A
POS TARG null,10;
SPATIAL SCAN 0.2
5,4.073 Degrees,For
ward
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
8.774726 Secs (8.775 Secs)
[==>]
SAMP-SEQ=SPARS
10;
NSAMP=2
SAMP-SEQ=SPARS POS TARG -8,-1;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-2;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-3;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
SAMP-SEQ=SPARS POS TARG -8,-4;
10;
SPATIAL SCAN 1.5
NSAMP=2
,0.76 Degrees,Forwa
rd
17
Orbit
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 2 (60 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[1]
30 Secs X 3 (90 Secs)
[==>(Copy 1)]
[==>(Copy 2)]
[==>(Copy 3)]
[1]
[1]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Proposal 14020 - Visit 04 - WFC3 Photometric Repeatibility
11
12
13
14
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
Scan Vertica (1) M-35
l
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
WFC3/IR, MULTIACCUM,
IRSUB512-FIX
F140W
F140W
F140W
F140W
SAMP-SEQ=SPARS POS TARG -1,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -2,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -3,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
SAMP-SEQ=SPARS POS TARG -4,10;
10;
SPATIAL SCAN 1.3
NSAMP=2
4,270.53 Degrees,Fo
rward
18
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
Sequence 1-14 Non-I
nt in Visit 04
Same Obset in Seque
nce 1-14 Non-Int in
Visit 04
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
8.774726 Secs (8.775 Secs)
[==>]
[1]
Orbit Structure
Proposal 14020 - Visit 04 - WFC3 Photometric Repeatibility
19