Estimation of the lateral mis-registrations of the GRAVITY+ adaptive optics system - Perturbative method with open-loop modal correlation and non-perturbative method with temporal correlation of closed-loop telemetry

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Fig. 7

Sensitivity of the closed loop estimator for different numbers of controlled modes in the noise limited regime (coloured curves). The coloured areas emphasise the ±3 σ regions. The black dashed (resp. plain) line is the fitted (resp. theoretical) sensitivity of g^cl ≃ 0.7 (resp. 1). The coloured dashed lines emphasise the lateral error at which the panels of Fig. 8 are displayed.

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