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• W2893794249 abstract "Modern ground-based telescopes like the planned extremely large telescope (ELT) depend heavily on adaptive optics (AO) systems to correct for atmospheric turbulence. Even though AO correction is used, the quality of astronomical images still is degraded due to the time delay stemming from the wavefront sensor integration time and temporal response of the deformable mirror(s) (DM). This results in a blur, which can be mathematically described by a convolution of the true image with the point spread function (PSF). We present an algorithm for single-conjugate adaptive optics PSF reconstruction adapted to the needs of ELTs in a storage efficient way. In particular, the classical PSF reconstruction algorithm is changed in several points to give a more accurate estimate for the post-AO PSF. Bilinear splines are used as basis functions to minimize the computational effort. Results obtained in an end-to-end simulation tool show qualitatively good reconstruction of the PSF compared with the PSF calculated directly from the simulated incoming wavefront. Furthermore, the used algorithm has a reasonable runtime and memory consumption." @default.
• W2893794249 created "2018-10-05" @default.
• W2893794249 creator A5034610526 @default.
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• W2893794249 date "2018-09-27" @default.
• W2893794249 modified "2023-09-26" @default.
• W2893794249 title "Point spread function reconstruction for single-conjugate adaptive optics on extremely large telescopes" @default.
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• W2893794249 doi "https://doi.org/10.1117/1.jatis.4.4.049003" @default.
• W2893794249 hasPublicationYear "2018" @default.
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