Open Access
Table 2
Mission parameters adopted for the space-based nulling interferometer.
| Parameter | Value | Unit | |
|---|---|---|---|
| Number of collector spacecraft | 4 | – | |
| Pessimistic | 1.0 | m | |
| Mirror diameter | Reference | 2.0 | m |
| Optimistic | 3.5 | m | |
| Pessimistic | 6.0–17.0 | µm | |
| Wavelength coverage | Reference | 4.0–18.5 | µm |
| Optimistic | 3.0–20.0 | µm | |
| Spectral resolution | 20 | – | |
| Min. nulling baseline length | 10 | m | |
| Max. nulling baseline length | 100 | m | |
| Ratio imaging/nulling baseline | 6 | – | |
| Quantum efficiency | 0.7 | – | |
| Total throughput | 0.05 | – | |
| S/Ntarget | 7 | – | |
| Duration of search phase | 2.5 | yr | |
| Slew time | 10 | h | |
| Rel. observing overheads | 0.2 | – | |
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