Modeling of PSF corrected by adaptive optics systems

F. Ferreira; E. Gendron; G. Rousset; D. Gratadour

doi:10.1117/12.2311806

11 July 2018 Modeling of PSF corrected by adaptive optics systems

F. Ferreira, E. Gendron, G. Rousset, D. Gratadour

Proceedings Volume 10703, Adaptive Optics Systems VI; 107034A (2018) https://doi.org/10.1117/12.2311806
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

For ground-based telescopes, Adaptive Optics (AO) systems aim to correct the wavefront disturbances due to atmospheric turbulence.The Point Spread Function (PSF) is one of the metrics of the AO system correction performance when compared to the diffraction limited one. Estimating the AO corrected PSF is important for image inversion which requires accurate estimation of the PSF over the scientific field. This estimation relies on the knowledge of the AO system error budget. Establishing the various contributions of this error budget is an issue because of the propagation process of errors through the AO loop filtering. We have developed a model for SCAO system residual error breakdown which includes temporal error, anisoplanatism, aliasing, noise and fitting terms. Thanks to GPU acceleration, it leads to PSF estimation at ELT scale in half a minute.

Citation Download Citation

F. Ferreira, E. Gendron, G. Rousset, and D. Gratadour "Modeling of PSF corrected by adaptive optics systems", Proc. SPIE 10703, Adaptive Optics Systems VI, 107034A (11 July 2018); https://doi.org/10.1117/12.2311806

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