25 August 2005 Fine calibration and pre-compensation of non-common path aberrations for high performance AO system
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Abstract
Non common path aberrations (NCPA) are one of the main limitations to achieve ultimate performance of an adaptive optic system. These static optical aberrations are unseen by the wave front sensor and therefore not corrected by closed AO loop. We present experimental results of a new procedure of measurement and pre-compensation of the AO non-common path aberrations. This new procedure has been studied with simulations, and tested on the AO bench (BOA) at ONERA. Strehl Ratio (SR) obtained on the imaging path reaches 93 % @ 632.8 nm even for low SNR.
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J.-F. Sauvage, T. Fusco, G. Rousset, C. Petit, B. Neichel, A. Blanc, J.-L. Beuzit, "Fine calibration and pre-compensation of non-common path aberrations for high performance AO system", Proc. SPIE 5903, Astronomical Adaptive Optics Systems and Applications II, 59030B (25 August 2005); doi: 10.1117/12.618278; https://doi.org/10.1117/12.618278
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