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James Webb Space Telescope
MIRI At A Glance

MIRI Optical Configuration:

MIRI optics module.

Imaging:

  • λ = 5 - 28.3 µm
  • 1.25' x 1.88' field of view
  • Low resolution spectrograph, R~100, 5-10 µm
  • Three 4-quadrant phase mask coronagraphs, one Lyot coronagraph

Field of View

MIRI optics module.

Filters

λ(µm)Δλ(µm)Comment
F560W5.61.2Broad Band
F770W7.72.2PAH, Broad Band
F1000W102Silicate, Broad Band
F1130W11.30.7PAH, Broad Band
F1280W12.82.4Broad Band
F1500W153Broad Band
F1800W183Silicate, Broad Band
F2100W215Broad Band
F2550W25.54Broad Band
F2550WR25.54Redundant Filter, Risk Reduction
FNDNeutral DensityFor Coron. Acquis.
F1065C10.650.53Phase mask, Nh2, silicate
F1140C11.40.57Phase mask, cont. or PAH
F1550C15.50.78Phase mask, cont.
F2300C234.6Focal Plane Mask, Debris Disk
OPAQUEBlackened BlankN/AFor Darks

Medium Resolution Spectroscopy:

  • λ = 5 - 27 µm (goal is 28.3 µm)
  • Integral field spectroscopy, 3.5" x 3.5" FOV (or more)
  • R ~ 3000-1000 from λ = 5- 27 µm

Field of View

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Medium Resolution Spectrometer parameters

ChannelWavelength
µm
Pixel Size
arcsec
Slice Width
arcsec
Slices
#
FOV
arcsec2
Resolving Power
1 5.0 - 7.7 0.196 0.176 22 3.00 x 3.87 2400 - 3700
2 7.7 - 11.9 0.196 0.277 16 3.50 x 4.42 2400 - 3600
3 11.9- 18.3 0.245 0.387 16 5.20 x 6.19 2400 - 3600
4 18.3 - 28.3 0.273 0.645 12 6.70 x 7.73 2400 - 3600