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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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