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Table 5
Simulation parameters used for closed-loop simulation for a single-stage XAO using the iMZ.
| Simulation parameters | |
|---|---|
| Fried’s parameter r0 Coherence time τ0 Outer scale L0 |
10 cm or 15 cm at λ = 500 nm 5.3 ms or 5.8 ms 25 m |
| WFS | iMZ (1.5 λ/D pinhole and 40/60 beam splitter) |
| WFS wavelength | 1.2 µm |
| Image wavelength | 1.2 µm |
| Pixel size | 20 cm (40 × 40 pixels) |
| Corrector | Perfect DM (no fitting error) |
| Controller | Integrator (g = 0.3) |
| Loop frequency | 1 kHz |
| Delay | 1 frame |
| Pre-corrected modes | Piston, tip, and tilt |
| Noise | Photon noise + read-out noise (σron = 0.1 e−) |
Notes. The turbulent phase screen are generated with the multi-layers model of the simulation tool COMPASS (Ferreira et al. 2018) developed for the SAXO+ (Goulas et al. 2024).
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