Table 1. Specifications of adaptive optics (AO) system

Instruments Parameter Value
WFS Camera model OCAM2K
Number of subapertures 8 × 8
Wavelength range 450–800 nm
Sampling frequency ≤ 2,067 Hz
Read-out noise 0.3 e-
Slope computation Center of gravity
DM Model DM97-15
Number of actuators 97
Wavefront tip/tilt stroke (PtV) 40–60 μm
Bandwidth ≤ 2 kHz
Imaging camera Model Falcon EM285-CL
Wavelength range 800–1,000 nm
Number of pixels 1,004 × 1,002
Pixel size 8 μm × 8 μm
Frame rate 30 Hz
Control Gain User selectable
Mode Zonal
Correction rate ≤ 2 kHz
WFS, wavefront sensor; DM, deformable mirror.