System analysis and characterization of the FFREE bench

Olivier Preis; Christophe Vérinaud; Jacopo Antichi; Noël Ventura

doi:10.1117/12.925667

13 September 2012 System analysis and characterization of the FFREE bench

Olivier Preis, Christophe Vérinaud, Jacopo Antichi, Noël Ventura

Proceedings Volume 8447, Adaptive Optics Systems III; 84473X (2012) https://doi.org/10.1117/12.925667
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

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.

Citation Download Citation

Olivier Preis, Christophe Vérinaud, Jacopo Antichi, and Noël Ventura "System analysis and characterization of the FFREE bench", Proc. SPIE 8447, Adaptive Optics Systems III, 84473X (13 September 2012); https://doi.org/10.1117/12.925667

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