Instruments

Detectors

NIRCam Field of View

view

Detector Properties

NIRCam (JWST Documentation)

Average Properties of the NIRCam Detectors

Parameter

Short wavelength channel
(0.6-2.3 μm)

Long wavelength channel
(2.4-5.0 μm)

CDS readnoise
(correlated double sampling)

15.77 ± 0.94e-

13.25 ± 0.08e-

Dark current in 1,000s

1.9 ± 1.1e-/ks

34.2 ± 5e-/ks

Effective noise in 1,000s
(93 groups of full-frame RAPID)

7.79 ± 0.68e-

9.28 ± 0.12e-

Gain(e-/ADU)

2.05 ± 0.4

1.82 ± 0.4

Well capacity (saturation level
with superbias subtracted)

105,750 ± 2.264e-

83,300 ± 1,200e-

Quantum efficiency (QE)

70%@0.6μm
80%@1.0μm
90%@2.0μm

80%@3μm
90%@4μm
60%@5μm

Interpixel capacitance (IPC)

0.53% ± 0.04%

0.59% ± 0.04%

Post-pixel coupling (PPC)

0.08% ± 0.02%

0.19% ± 0.03%

Persistence (for same exposure time
as previous nearly saturated image)

<0.01%

<0.01%

Properties of Individual NIRCam Detectors

Detector

CDS read noise
(e–)

Dark current
(e–/ks)

Effective noise in
1,000 s (e–)

Gain
(e–/ADU)

Saturation raw (ADU)

A1

15.99 ± 1.38

0.3 ± 1.6

6.86 ± 1.79

2.08

60,300 ± 1,760

A2

17.18 ± 1.51

2.7 ± 1.9

8.61 ± 2.12

2.02

63,100 ± 600

A3

14.80 ± 1.29

2.8 ± 1.6

8.40 ± 2.59

2.17

59,300 ± 220

A4

15.06 ± 1.30

3.3 ± 1.8

7.36 ± 1.92

2.02

62,000 ± 1,330

B1

16.76 ± 1.46

2.2 ± 1.5

6.83 ± 1.77

2.01

62,300 ± 440

B2

15.84 ± 1.37

0.8 ± 1.5

7.73 ± 2.14

2.14

61,000 ± 360

B3

16.30 ± 1.42

1.7 ± 1.4

7.98 ± 2.27

1.94

62,500 ± 860

B4

14.23 ± 1.24

1.1 ± 1.8

8.57 ± 2.99

2.03

61,000 ± 520

A5

13.17 ± 1.14

33.5 ± 3.1

9.16 ± 2.57

1.84

59,200 ± 960

B5

13.33 ± 1.18

35.0 ± 2.5

9.39 ± 2.20

1.80

58,500 ± 470

MIRI (JWST Documentation)

Parameter

Value

Pixel gain (e–/ADU)

~4

Dark current (e–/s)

~0.2

Read noise (DN)

~6

Latent images (%)

< 1

Full well (e–)

~210,000

Filters & Throughputs

NIRCam

nircam_wheels nircam

MIRI

miri_wheels miri

Filter Wavelength Parameters

Filter ID

λ_ref

λ_eff

λ_min

λ_max

HST/ACS_WFC.F435W

4329.85

4341.62

3610.23

4883.77

HST/ACS_WFC.F606W

5921.88

5809.26

4634.30

7180.10

HST/ACS_WFC.F775W

7693.47

7652.44

6803.72

8631.82

HST/ACS_WFC.F814W

8045.53

7973.39

6869.59

9632.01

HST/ACS_WFC.F850LP

9031.48

9004.99

8007.01

10862.13

HST/WFC3_IR.F105W

10550.25

10430.83

8955.24

12130.55

HST/WFC3_IR.F125W

12486.07

12363.55

10853.22

14141.73

HST/WFC3_IR.F140W

13923.21

13734.66

11864.94

16133.14

HST/WFC3_IR.F160W

15370.34

15278.47

13857.70

17003.09

JWST/NIRCam.F070W

7039.12

6988.43

6048.20

7927.07

JWST/NIRCam.F090W

9021.53

8984.98

7881.88

10243.08

JWST/NIRCam.F115W

11542.61

11433.62

9975.60

13058.40

JWST/NIRCam.F140M

14053.23

14023.62

13042.25

15058.58

JWST/NIRCam.F150W

15007.44

14872.56

13041.19

16948.89

JWST/NIRCam.F162M

16272.47

16243.33

15126.16

17439.17

JWST/NIRCam.F164N

16445.36

16446.18

16171.41

16717.72

JWST/NIRCam.F150W2

16592.11

14793.71

9774.71

23946.87

JWST/NIRCam.F182M

18451.67

18388.83

16959.53

20010.97

JWST/NIRCam.F187N

18738.99

18737.22

18445.28

19029.98

JWST/NIRCam.F200W

19886.48

19680.41

17249.08

22596.64

JWST/NIRCam.F210M

20954.51

20908.35

19618.54

22337.29

JWST/NIRCam.F212N

21213.18

21211.93

20900.93

21524.99

JWST/NIRCam.F250M

25032.33

25005.80

23935.49

26177.91

JWST/NIRCam.F277W

27617.40

27278.58

23673.12

32203.22

JWST/NIRCam.F300M

29891.21

29818.32

27703.55

32505.92

JWST/NIRCam.F335M

33620.67

33537.23

31203.36

36442.23

JWST/NIRCam.F356W

35683.62

35287.04

30732.91

40801.26

JWST/NIRCam.F360M

36241.76

36148.93

33260.34

39037.39

JWST/NIRCam.F405N

40516.53

40515.76

40097.87

40966.10

JWST/NIRCam.F410M

40822.38

40723.18

37763.56

44048.41

JWST/NIRCam.F430M

42812.58

42784.79

41227.68

44448.79

JWST/NIRCam.F444W

44043.15

43504.26

38039.57

50995.50

JWST/NIRCam.F460M

46299.28

46269.86

44652.64

48146.41

JWST/NIRCam.F466N

46544.30

46540.48

46021.35

47042.62

JWST/NIRCam.F470N

47077.91

47077.84

46553.98

47566.82

JWST/NIRCam.F480M

48181.95

48139.11

45820.02

50919.02

JWST/MIRI.F560W

56352.56

55870.25

48944.36

64279.58

JWST/MIRI.F770W

76393.34

75224.94

64802.79

88382.09

JWST/MIRI.F1000W

99531.16

98793.45

87645.92

111053.33

JWST/MIRI.F1280W

128101.38

127059.68

112674.80

143435.71

JWST/MIRI.F1500W

150635.06

149257.07

131345.04

171580.84

JWST/MIRI.F1800W

179837.22

178734.17

160441.28

203000.78

JWST/MIRI.F2100W

207950.05

205601.06

179077.84

244780.51

JWST/MIRI.F2550W

253640.02

251515.99

223494.34

299940.00