The INS NIRCam Team
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Transcript of The INS NIRCam Team
The INS NIRCam Team
U. Arizona NIRCam Team Members
PI: Marcia Rieke
John Stansberry
Karl MisseltDoug Kelly
Christopher WillmerKevin Flaherty Brenda FryeTIPS 4/18/2013 2/18
INS NIRCam Team Members
TIPS 4/18/2013
Elizabeth BarkerDeputy LeadETC WG Lead
Andrew ColsonRIA
Massimo RobbertoTechnical LeadCalibration WG
Jennifer LotzOperations WGEfficiency WG
Armin RestPipeline WG
Jerry KrissTeam LeadBackgrounds WG
John StansberryTBD in June
David GolimowskiI&T LeadCoronagraphs WG
3/18
NIRCam has Two Imagers in Two Modules
Long wavelength channelShort wavelength channel
Mod
ule
AM
odul
e B
Long wavelength channelShort wavelength channel
Mod
ule
AM
odul
e B
Long wavelength channelShort wavelength channel
Mod
ule
AM
odul
e B
Long wavelength channelShort wavelength channel
Mod
ule
AM
odul
e B
2.2 arcmin
2.2 arcmin
2.2 arcmin
Two adjacent fields of view (2.2 arcminute)2 Both fields in SW and LW bands Two back-to-back modules
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Fields of View of JWST Instruments
0
-2
-4
2
4
0-2-4-6-8 2 4 6 8Horizontal Field Position (arcmin)
Verti
cal F
ield
Pos
ition
(arc
min
)
NIRSpec
NIRCam
MIRI
NIRISS FGS
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The Near Infrared Camera
Coronagraphic masks:
2 channels in each module:
Short Wavelength(0.6-2.3 m)
Long Wavelength(2.4-5.0 m)
HgCdTe FPA Format(22) (2040
2040)
HgCdTe FPA Format1 (2040 2040)
0.032 arcsec/pixel 0.065 arcsec/pixelFOV= 2.212.21
arcmin2 FOV= 2.212.21
arcmin2
Sensitivity (10, R=4, 104 s): 1.1 m: 10.4 nJy 2.0 m: 12.1 nJy 4.4 m: 24.5 nJy
TIPS 4/18/2013
2 functionally identical (mirror image) modules
Filters provide (W R=4, M R=10, N R=100)
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NIRCam Optical Layout
TIPS 4/18/2013 7/18
Assembled Modules
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NIRCam Filter Wheel
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NIRCam Optical Elements
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NIRCam Focal Plane Arrays
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MULTIACCUM Readout Mode
(“ramp”) (“ramp”)
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Detector Performance
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0.1
1
10
100
1000
0.5 1.5 2.5 3.5 4.5 m)
nJy
Ground (Keck/VLT) Space (HST or SPITZER) NIRCam z=5.0 z=10.1
5-sigma, 50,000 secs
NIRCam Sensitivity Comparison
microns Galaxy models:
HST
SSTGround
JWST NIRCam
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NIRCam Coronagraph - 1
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NIRCam Coronagraph - 2
TIPS 4/18/2013 16/18
NIRCam’s Wavefront Sensing Role
NIRCam provides the imaging data needed for wavefront sensing.
Dispersed Hartmann Sensors at 0° and 60° orientations permit phasing of adjacent mirror elements.
Two grisms on the long wavelength channel provide an alternative to the Dispersed Hartmann Sensor (DHS).
Coarse phasing w/DHS
After coarse phasing Fully aligned
Fine phasing
First Light
After segment capture
DHS at pupil Spectra recorded by NIRCam
TIPS 4/18/2013 17/18
NIRCam Status
Cryovac 3 successfully finished April 11. Instrument currently in bake out to meet contamination requirements.
ICE rebuilding underway. EMI testing is next. Shipment to GSFC expected at end of May. Acoustic and vibe testing (at APL?) in June. ICE boxes arrive late August. FPE delivered in September. Acceptance review at GSFC in October. New SW FPAs are in house at UofA, and they look beautiful.
Expect to prepare these and place in NIRCam before ISIM CV2.
New LW FPAs ready at Teledyne. Hope to prepare these too.
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