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EXES
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Estimated Capabilities
The following are estimates of EXES performance. Certain parameters, particularly the low spectral resolution, are not
constrained at this time. We welcome your comments on the capabilities most important to your science.
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Detector: 256 x 256 pixel Si:As BIB
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Wavelength range: 5.5 to 28.5 µm
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High Resolution Mode:
- R ~ 100,000; cross-dispersed; ~10 orders (0.5 cm-1 per order)
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Medium Resolution Mode:
- R ~ 10,000; long slit; wavelength coverage ~5 cm-1
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Low Resolution Mode:
- R ~ 2,000; long slit; wavelength coverage ~lambda/30 µm
Typical EXES Modes and Estimated Sensitivities
Lambda
[µm]
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R
[lam/D_lam]
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Slit Width
["/pixels]
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Slit Length
["]
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Bandwidth
[µm/kms-1]
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NEFDa
[Jy]
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NELBb
[Wm-2sr-1]
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6
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120,000
14,000
4200
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1.3/3.4
1.8/4.8
1.8/4.8
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10
95
95
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0.023/1200
0.023/1200
0.07/3800
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1.7
0.5
0.2
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1.7x10-7
2.7x10-7
4.0x10-7
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13.5
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120,000
14,000
3700c
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1.3/3.4
1.8/4.8
1.8/4.8
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25
95
50c
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0.038d/850
0.053/1200
0.19/4300
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4.4
1.2
0.6
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2.0x10-7
3.3x10-7
6.4x10-7
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18
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80,000
10,000
3800
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1.8/4.8
2.6/6.7
2.6/6.7c
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30
95
50c
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0.038d/630
0.07/1200
0.18/3000
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5.2
1.4
1.1
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1.3x10-7
2.2x10-7
4.3x10-7
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27
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60,000
6800
1800
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2.6/6.7
3.7/9.6
3.7/9.6
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44
95
40c
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0.038d/420
0.10/1200
0.39/4300
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10.7
2.8
1.4
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1.0x10-7
1.7x10-7
3.3x10-7
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aIncludes nodding along the slit (10sigma:100 s).
bIncludes nodding off the slit (10sigma:100 s).
cAllows for 15 Hz maximum frame rate.
dOrder extends beyond size of detector giving incomplete wavelength coverage at this wavelength.
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