13 September 2012 System analysis and characterization of the FFREE bench
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Detection of exoplanets implies the measure of extremely weak signals, usually below intensity perturbations in the PSF caused by static aberrations. We have finished the construction of a new test bench called FFREE - Fresnel Free Experiment for EPICS. The scope of the FFREE experiment is the active speckles correction using off-line cancellation techniques: Electric Field Conjugation and Phase Diversity, in view of a future instrument EPICS for the telescope EELT (ESO). We will describe the system and discuss some characteristics like the chromatism and the environmental stability of the bench.
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Olivier Preis, Christophe Vérinaud, Jacopo Antichi, Noël Ventura, "System analysis and characterization of the FFREE bench", Proc. SPIE 8447, Adaptive Optics Systems III, 84473X (13 September 2012); doi: 10.1117/12.925667; https://doi.org/10.1117/12.925667


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