| Download | - View final version: Characterization and mitigation of Laser–Guide–Star–induced aberrations (PDF, 1.1 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1051/ao4elt/201005016 |
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| Author | Search for: Lardiere, Olivier; Search for: Conan, Rodolphe; Search for: Bradley, Colin; Search for: Jackson, Kate; Search for: Herriot, Glen1 |
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| Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
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| Format | Text, Article |
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| Conference | 1st AO4ELT conference - Adaptive Optics for Extremely Large Telescopes, June 22-26, 2009, Paris, France |
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| Abstract | Sodium Laser Guide Stars (LGS) induce optical aberrations in adaptive optics (AO) systems.The artificial star is elongated due to the sodium layer thickness, and the variations of thesodium layer altitude and atom density profile induce errors on centroid measurements ofelongated spots. In AO systems, these errors generate spurious optical aberrations, termed LGSaberrations, especially with ELTs for which the spot elongation is greater. According toanalytical models and experimental results obtained with the University of Victoria LGS benchdemonstrator, we characterized the main LGS aberrations and studied two options to mitigatethem: the Radial Thresholding and the temporal filtering. |
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| Publication date | 2010-02-24 |
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| Publisher | EDP Sciences |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 3b1a8678-160e-44f3-ac87-a2982a7cb459 |
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| Record created | 2020-06-24 |
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| Record modified | 2020-07-02 |
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