Table 1
Instruments and data properties, and corresponding settings of the spectral synthesis for the simulations.
| Instrument | SP | GFPI | POLIS | TIP | TIP | Echelle | Simulation |
|
|
|||||||
| λ [nm] | 630 | 630 | 630 | 1083 | 1565 | 557 | all |
| Main line(s) | Fe i | Fe i | Fe i, O i | Si i | Fe i | Fe i, O i | Fe i, Si i |
| Dispersion [pm] | 2.15 | 2.31 | 1.49 | 2.10 | 2.95 | 0.31 | 0.50 |
| Sampling [“] | 0.3 × 0.3 | 0.11 × 0.11 | 0.5 × 0.15 | 0.5 × 0.18 | 0.5 × 0.18 | 0.18 × 0.18 | 0.13 × 0.13 |
| FOV [“] | 115 × 115 | 30 × 53 | 100 × 94 | 100 × 78 | 40 × 75 | 35 × 200 | 8.3 × 8.3 |
| Integration time [s] | 1.6 | 0.64 | 3.3 | 3.3 | 4 | 3 | – |
| Spatial resolution1 [“] | 0.642 | 0.3/0.63 | 0.7 | 0.7 | 0.7 | ~1 | 0.134 |
| App. # of profiles | 150.000 | 140.000 | 130.000 | 90.000 | 30.000 | 220.000 | 4.000 |
Notes.
(1)
Estimated values, cf. Sect. 4.3 below;
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