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Tomographic alignment algorithm for an extremely large three-mirror telescope: invisible modes

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Piatrou, Piotr; Chanan, Gary

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We analyze the optical effects due to distortions of a three-mirror telescope that is sufficiently large that all three mirrors must be actively controlled. Numerical experiments on telescopes with both monolithic and segmented primary mirrors reveal the existence of telescope misalignment configurations (modes) that are invisible to a fixed focal station wavefront sensor, even for highly redundant multidirectional tomographic measurement schemes. We describe these modes and give a theoretical...[Show more]

dc.contributor.authorPiatrou, Piotr
dc.contributor.authorChanan, Gary
dc.date.accessioned2016-05-17T01:10:39Z
dc.date.available2016-05-17T01:10:39Z
dc.identifier.issn0003-6935
dc.identifier.urihttp://hdl.handle.net/1885/101422
dc.description.abstractWe analyze the optical effects due to distortions of a three-mirror telescope that is sufficiently large that all three mirrors must be actively controlled. Numerical experiments on telescopes with both monolithic and segmented primary mirrors reveal the existence of telescope misalignment configurations (modes) that are invisible to a fixed focal station wavefront sensor, even for highly redundant multidirectional tomographic measurement schemes. We describe these modes and give a theoretical explanation for them.
dc.description.sponsorshipThe authors gratefully acknowledge the support of the TMT partner institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, and the University of California. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada (NRC), and the U.S. National Science Foundation (NSF).
dc.publisherOptical Society of America
dc.rights© 2010 Optical Society of America
dc.sourceApplied optics
dc.subjectKeywords: Alignment algorithms; Multi-directional; Numerical experiments; Optical effects; Segmented primary mirrors; Theoretical explanation; Tomographic; Wave front sensors; Alignment; Optical telescopes; Mirrors
dc.titleTomographic alignment algorithm for an extremely large three-mirror telescope: invisible modes
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume49
dc.date.issued2010-11-20
local.identifier.absfor020102
local.identifier.ariespublicationf5625xPUB8008
local.publisher.urlhttp://www.osa.org/en-us/home/
local.type.statusPublished Version
local.contributor.affiliationPiatrou, Piotr, College of Physical and Mathematical Sciences, CPMS Research School of Astronomy and Astrophysics, RSAA General, The Australian National University
local.contributor.affiliationChanan, Gary, University of California, United States of America
local.identifier.essn1539-4522
local.bibliographicCitation.issue33
local.bibliographicCitation.startpage6395
local.bibliographicCitation.lastpage6401
local.identifier.doi10.1364/AO.49.006395
dc.date.updated2016-06-14T08:36:54Z
local.identifier.scopusID2-s2.0-78649545579
CollectionsANU Research Publications

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