Proposal 11436 (STScI Edit Number: 1, Created: Thursday, September 25, 2008 8:01:15 PM EST) - Overview
11436 - WFC3 UVIS Image Quality
Cycle: 17, Proposal Category: SM4/WFC3
(Availability Mode: RESTRICTED)
INVESTIGATORS
Name
Dr. George Hartig (PI)
Institution
Space Telescope Science Institute
E-Mail
hartig@stsci.edu
VISITS
Visit Targets used in Visit
Configurations used in Visit
Orbits Used Last Orbit Planner Run
01
WFC3/UVIS
3
(1) NGC188-58
25-Sep-2008 21:01:09.0
OP Current
with Visit?
yes
3 Total Orbits Used
ABSTRACT
The UVIS imaging performance over field will be assessed in two passbands to verify PSF encircled energy CEI specifications and other
performance metrics at 250 and 633 nm, after the instrument has been aligned to the OTA.
This proposal is activity ID WFC3-23
OBSERVING DESCRIPTION
The UVIS imaging performance over field will be assessed in two passbands to verify PSF encircled energy CEI specifications at 250 and 633 nm,
after the instrument has been aligned to the OTA. The observed field must be sufficiently dense to provide good sampling over the FOV while
providing enough isolated stars to permit accurate PSF measurement. If the field is astrometric and astrometric guide stars are used, the plate scale
Proposal 11436 (STScI Edit Number: 1, Created: Thursday, September 25, 2008 8:01:15 PM EST) - Overview
and image orientation may also be determined. NGC-188 star 58 is a likely target, available year-round and used previously for ACS alignment. The
F275W and F621M filters will be used. Full frame images will be obtained at each of 4 POS-TARG offset positions designed to improve sampling
over the field.
CALIBRATION JUSTIFICATION
The image quality of UVIS science data are assessed fully for the first time and at the CEI spec wavelengths.
2
Fixed Targets
Visit
Proposal 11436 - Visit 01 - WFC3 UVIS Image Quality
Proposal 11436, Visit 01, scheduling
Diagnostic Status: No Diagnostics
Scientific Instruments: WFC3/UVIS
Special Requirements: (none)
Comments: Execute after prop 11434, visit 3 (uplink).
#
Name
Target Coordinates
Targ. Coord. Corrections
Fluxes
(1)
NGC188-58
RA: 00 47 4.4540 (11.7685583d)
Proper Motion RA: -0.00257s/yr
V=14.65+/-0.05
Dec: +85 16 32.70 (85.27575d)
Proper Motion Dec: -0.0112"/yr
Equinox: J2000
Parallax: 0.0"
Plate Id: ZZZZ
Epoch of Position: 2000
Comments: Use guide stars from the NGC188 Astrometric Catalog (Plate-ID ZZZZ)
#
Label
Target
Config,Mode,Aperture
Spectral Els.
Opt. Params.
Special Reqs.
Groups
1
(1) NGC188-58
WFC3/UVIS, ACCUM, UVIS
F621M
CR-SPLIT=2
POS TARG 0.,20.
2
Exposures
3
4
5
6
7
8
(1) NGC188-58
(1) NGC188-58
(1) NGC188-58
(1) NGC188-58
(1) NGC188-58
(1) NGC188-58
(1) NGC188-58
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
WFC3/UVIS, ACCUM, UVIS
F621M
F275W
F621M
F621M
F275W
F275W
F275W
CR-SPLIT=2
CR-SPLIT=2
CR-SPLIT=2
CR-SPLIT=2
CR-SPLIT=2
CR-SPLIT=2
CR-SPLIT=2
3
POS TARG 0,0
POS TARG 20.00,0.
POS TARG 20.00,20
.00
POS TARG 20.00,20
.
POS TARG 20.00,0.
POS TARG 0.,20.
Fri Sep 26 01:01:16 GMT 2008
Miscellaneous
Reference Frame: GSC1
Exp. Time/[Actual Dur.]
60 Secs
[==>(Split 1)]
[==>(Split 2)]
60 Secs
[==>(Split 1)]
[==>(Split 2)]
1360 Secs
[==>(Split 1)]
[==>(Split 2)]
60 Secs
[==>(Split 1)]
[==>(Split 2)]
60 Secs
[==>(Split 1)]
[==>(Split 2)]
1360 Secs
[==>(Split 1)]
[==>(Split 2)]
1280 Secs
[==>(Split 1)]
[==>(Split 2)]
1280 Secs
[==>(Split 1)]
[==>(Split 2)]
Orbit
[1]
[1]
[1]
[2]
[2]
[2]
[3]
[3]
Orbit Structure
Proposal 11436 - Visit 01 - WFC3 UVIS Image Quality
4
Orbit Structure (continued)
Proposal 11436 - Visit 01 - WFC3 UVIS Image Quality
5