Open Access
Table 1.
ExAO numerical simulations parameters.
| Numerical simulation configuration | |
|---|---|
| D = 8. m diameter | |
| Telescope | No support spiders |
| Central obstruction = 0.12 | |
| von Kármán, ground layer only | |
| r0 = 0.16 at 500 nm | |
| Turbulence layer | L0 = 20 m |
| (to simulate post-woofer residuals) | |
| ||v|| = 10 m s−1 | |
| PyWFS | |
| Subapertures | 64 × 64 |
| Wavelength | Monochromatic, 750 nm |
| Guide star magnitude | 7 |
| Modulation | Circular, 3  radius, 24 points |
| Photon noise only | |
| Deformable mirror | |
| 48 actuators across the diameter | |
| Focal Plane Camera | |
| Wavelength | Monochromatic, 1.65 μm |
| Photon noise only | |
| RTC controller | |
| Loop rate | 2 kHz |
| Method | Linear modal integrator |
| Basis | DM Karhunen-Loève (KL) basis (a) |
| Loop gain | 0.3 |
| Controlled modes | 1505 |
| Modes filtered | 300 |
References. (a)Ferreira et al. (2018).
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