MIRI Performance

point sources - surface brightness values follow at the bottom of this page

 

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name

l(microns)

lambda/delta lambda

detection limit, 10 sigma, 10,000 seconds

  F560W 5.6 5 0.2 microJy
  F770W 7.7 3.5 0.28 microJy
  F1000W 10 5 0.7 microJy
  F1130W 11.3 16 1.7 microJy
  F1280W 12.8 5 1.4 microJy
  F1500W 15 5 1.8 microJy
  F1800W 18 6 4.3 microJy
  F2100W 21 4 8.6 microJy
  F2550W 25.5 6 28 microJy
  MRS 1 6.4 3500 1.2 X 10-20 W m-2
  MRS 2 9.2 2800 0.9 X 10-20 W m-2
  MRS 3 14.5 2700 1.1 X 10-20 W m-2
  MRS 4 22.5 2200 10 X 10-20 W m-2
  LRS 7.5 100 3 microJy

 

Coronagraph Bands

name center wavelength (microns) delta lambda (microns)
F1065C 10.65 0.53
F1140C 11.40 0.57
F1550C 15.5 0.78
F2300C 23 4.6

 

Moderate Resolution Spectrometer Characteristics

name, wavelength range (microns) FOV (arcsec) sub-band name wavelength range (microns) resolution

Channel 1

4.86 - 7.74

3.0 X 3.9

A

B

C

4.87 - 5.82

5.62 - 6.73

6.49 - 7.76

2450 - 3710

2450 - 3710

2450 - 3710

Channel 2

7.43 - 11.84

3.5 X 4.4

A

B

C

7.45 - 8.90

8.61 - 10.28

9.94 - 11.87

2480 - 3690

2480 - 3690

2480 - 3690

Channel 3

11.44 - 18.20

5.2 X 6.2

A

B

C

11.47 - 13.67

13.25 - 15.80

15.30 - 18.24

2510 - 3730

2510 - 3730

2510 - 3730

Channel 4

17.53 - 28.75

6.7 X 7.7

A

B

C

17.54 - 21.10

20.44 - 24.72

23.84 - 28.82

2070 - 2490

2070 - 2490

2070 - 2490

Sensitivity vs. Wavelength

SN = 10 in 10,000 seconds, for an unresolved emission line:

 

Surface Brightness

 

name

detection limit, 1- sigma per pixel, 10,000 seconds: imager pixels are 0.11"

  F560W 2.6 nJy/pixel or 0.22 microJy/ square arcsec
  F770W 3.2 nJy/pixel or 0.26 microJy/ square arcsec
  F1000W 6.4 nJy/pixel or 0.53 microJy/ square arcsec
  F1130W 14 nJy/pixel or 1.2 microJy/ square arcsec
  F1280W 10 nJy/pixel or 0.83 microJy/ square arcsec
  F1500W 11.2 nJy/pixel or 0.93 microJy/ square arcsec
  F1800W 23 nJy/pixel or 1.9 microJy/ square arcsec
  F2100W 40 nJy/pixel or 3.3  microJy/ square arcsec
  F2550W 110 nJy/pixel or 9.1 microJy/ square arcsec
  MRS 1 1.9 X 10-22 W m-2/pixel (0.2" pixels)
  MRS 2 2.2 X 10-22 W m-2/pixel (0.2" pixels)
  MRS 3 1.5 X 10-22 W m-2/pixel (0.25" pixels)
  MRS 4 8.7 X 10-22 W m-2/pixel (0.27" pixels)
 

Extended source performance of the MRS will be degraded if the source fills most of the IFU field.