Open Access
Table 2
Minimum fringe tracking requirements to remain photon limited over 4–19 μm for different stellar types and different optical error amounts at 5 pc.
| Beam combiner optical error |ΔR| | Fringe tracking RMS requirement (δ) | ||
|---|---|---|---|
| G2V star | K2V star | M5V star | |
| 0% | 0.7 nm | 1 nm | 6 nm |
| 2% | 1.5 nm | 2 nm | 7.5 nm |
| 5% | 3 nm | 4 nm | 11 nm |
| 10% | 4.5 nm | 5.5 nm | 15 nm |
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