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

Open Access

Fig. 3

Example in the GPAO bench of the 2D modal estimator. Panels a, b: SH-WFS pixels before and after the alignment. Green circles: WFS pupil edges. Panels c, e, f: x-slopes of the modal IM for m^KL = 40 before (panel c) and after (panel e) alignment and reference (panel f). panel d: over-sampled map of the coefficient α before alignment.

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