Open Access
Table 1
Simulation parameters.
| Telescope parameters | Target parameters | ||
|---|---|---|---|
| Diameter | 8 m | Wavelength λt | 1.65 μm |
| Atmospheric parameters | WFS parameters | ||
| Number of layers | 12 | Number of subapertures | 40 × 40 |
| r0 (500 nm) | 0.16 m | Wavelength λwfs | 0.5 μm |
| L0 | 100 m | Number of pixels per subap. | 6 |
| Pixel size | 0.5′′ | ||
| Photons per subap. | 760 | ||
| Readout noise | 3 e− | ||
| Centroiding method | Classical CoG | ||
| Guide star coordinates in FoV | (5′′, 0′′) | ||
| AO parameters | DM parameters | ||
| Loop frequency | 500 Hz | Number of DM actuators | 41 × 41 |
| Command law | Integrator | 1 tip-tilt mirror | |
| Loop gain | 0.3 | Conjugation altitude | 0 m (pupil) |
| Delay | 1 frame | ||
| Frames | 20 000 | ||
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