Table 1
Detector requirements for the various mission concepts discussed in the text.
| λ | Pdet | NEPph | Pdet for 1 Jy | Time constant | 1/f knee | |
| (μm) | (fW) |
|
(fW) | (ms) | (Hz) | |
|
|
||||||
| Double Fourier interferometer | 25–50 | 0.029 | 6.1 | 4.6 | 0.2 | 1 |
| 2 3 m ⌀ 5 K telescopes | 50–100 | 0.022 | 3.7 | 2.3 | ||
| 0.5λ/D pixels | 100–200 | 0.018 | 2.4 | 1.2 | ||
| 200–400 | 0.83 | 10 | 0.58 | |||
|
|
||||||
| Single dish Broadband camera | 30 | 0.053 | 8.5 | 30 | 30 | 0.1 |
| 3 m ⌀ 5 K telescope | 60 | 0.043 | 5.2 | 15 | ||
| 0.5λ/D pixels | 120 | 0.030 | 3.3 | 7.4 | ||
| λ/ Δλ = 3 | 240 | 0.041 | 2.6 | 3.7 | ||
| 400 | 0.27 | 5.2 | 2.2 | |||
|
|
||||||
| Single dish Broadband camera | 30 | 0.053 | 8.5 | 120 | 30 | 0.1 |
| 10 m ⌀ 25 K telescope | 60 | 0.88 | 24 | 60 | ||
| 0.5λ/D pixels | 120 | 24 | 89 | 30 | ||
| λ/ Δλ = 3 | 240 | 77 | 113 | 15 | ||
| 400 | 89 | 93 | 8.9 | |||
|
|
||||||
| Single dish Grating spectrometer | 30 | 9.1 × 10-5 | 0.35 | 0.052 | 100 | 0.1 |
| 3 m ⌀ 5 K telescope | 60 | 7.1 × 10-5 | 0.22 | 0.026 | ||
| 0.5λ/D pixels | 120 | 5.2 × 10-5 | 0.13 | 0.013 | ||
| λ/ Δλ = 1000 | 240 | 6.9 × 10-5 | 0.11 | 0.0065 | ||
| 400 | 4.8 × 10-5 | 0.22 | 0.039 | |||
|
|
||||||
| Single dish Grating spectrometer | 30 | 9.1 × 10-5 | 0.35 | 0.21 | 100 | 0.1 |
| 10 m ⌀ 25 K telescope | 60 | 1.5 × 10-4 | 1.0 | 0.1 | ||
| 0.5λ/D pixels | 120 | 0.044 | 3.3 | 0.052 | ||
| λ/ Δλ = 1000 | 240 | 0.13 | 2.6 | 0.026 | ||
| 400 | 0.15 | 5.2 | 0.016 | |||
|
|
||||||
| CMB experiment | 400 | 120 | 111 | 0.57 | 5 | 0.1 |
| 2 m ⌀ 30 K telescope | 600 | 110 | 85 | 0.38 | ||
| 1λ/D pixels | 900 | 96 | 65 | 0.25 | ||
| λ/ Δλ = 3 | 1400 | 107 | 54 | 0.16 | ||
| 2000 | 123 | 50 | 0.11 | |||
| 3000 | 129 | 41 | 0.076 | |||
Notes. On top of the requirements listed in the table, all detector systems have the common requirements of: i) a cosmic ray dead time <20% and ii) a pixel-pixel crosstalk (after data de-correlation) <−30 dB. Additionally all instruments will require on the order of several 104 of pixels.
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