@inproceedings{5c4700aea4454cb7ae89d8a291babe09,
title = "Wavefront reconstruction for a natural guide star ground layer adaptive optics system on the Giant Magellan Telescope",
abstract = "In this paper, we present a wavefront reconstruction paradigm for NGS GLAO systems. The conventional approach to reconstructing the wavefront for LGS GLAO systems is to have a number of LGSs in a ring outside the science field and simply average the individual wavefronts. This approach is not well-suited to NGS GLAO because the stars have an irregular distribution and varying magnitudes. In this paper, we derive covariance matrices for the wavefronts in different directions and the measurement noise. Using these covariance matrices, we are able to find the minimum-variance reconstructor and estimate the residual wavefront as a function of location in the field. This can be used to determine which guide stars produce the best correction. End-to-end simulations in YAO are run to estimate the expected performance of the NGS GLAO system for the Giant Magellan Telescope. We find that there is essentially full sky coverage.",
author = "{van Dam}, {Marcos A.} and Bouchez, {Antonin H.} and Rodolphe Conan and McLeod, {Brian A.}",
year = "2013",
doi = "10.12839/AO4ELT3.12295",
language = "English",
isbn = "9788890887604",
series = "3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes",
publisher = "INAF - Osservatorio Astrofisico di Arcetri Largo Enrico Fermi",
booktitle = "3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes",
note = "3rd Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2013 ; Conference date: 26-05-2013 Through 31-05-2013",
}