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Getting Lucky with adaptive optics: Fast adaptive optics image selection in the visible with a large telescope

Law, N M; Mackay, C D; Dekany, Richard G; Lloyd, J P; Moore, A M; Robertson, James G; Tuthill, Peter G; Woodruff, H C; Ireland, Michael

Description

We describe the results from a new instrument which combines Lucky Imaging and adaptive optics (AO) to give the first routine direct diffraction-limited imaging in the visible on a 5 m telescope. With fast image selection and alignment behind the PalomarAOsystem we obtained Strehl ratios of 5%-20% at 700 nm in a typical range of seeing conditions, with a median Strehl of approximately 12% when 10% of the input frames are selected. At wavelengths around 700 nm the system gave diffraction-limited...[Show more]

dc.contributor.authorLaw, N M
dc.contributor.authorMackay, C D
dc.contributor.authorDekany, Richard G
dc.contributor.authorLloyd, J P
dc.contributor.authorMoore, A M
dc.contributor.authorRobertson, James G
dc.contributor.authorTuthill, Peter G
dc.contributor.authorWoodruff, H C
dc.contributor.authorIreland, Michael
dc.date.accessioned2015-12-10T23:23:28Z
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1885/66965
dc.description.abstractWe describe the results from a new instrument which combines Lucky Imaging and adaptive optics (AO) to give the first routine direct diffraction-limited imaging in the visible on a 5 m telescope. With fast image selection and alignment behind the PalomarAOsystem we obtained Strehl ratios of 5%-20% at 700 nm in a typical range of seeing conditions, with a median Strehl of approximately 12% when 10% of the input frames are selected. At wavelengths around 700 nm the system gave diffraction-limited 35 mas full width at half-maxima (FWHMs). At 950 nm the output Strehl ratio was as high as 36% and at 500 nm the FWHMresolution was as small as 42mas, with a low Strehl ratio but with resolution improved by a factor of ∼ 20 compared to the prevailing seeing. To obtain wider fields we also used multiple Lucky Imaging guide stars in a configuration similar to a ground layer AO system. With eight guide stars but very undersampled datawe obtained 300 mas resolution across a 30″×30″ field of viewin the i ′ band.
dc.publisherIOP Publishing
dc.sourceAstrophysical Journal, The
dc.subjectKeywords: Instrumentation: adaptive optics; Instrumentation: high angular resolution; Methods: data analysis; Techniques: high angular resolution; Techniques: image processing
dc.titleGetting Lucky with adaptive optics: Fast adaptive optics image selection in the visible with a large telescope
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume692
dc.date.issued2009
local.identifier.absfor020102 - Astronomical and Space Instrumentation
local.identifier.ariespublicationU3488905xPUB1375
local.type.statusPublished Version
local.contributor.affiliationLaw, N M, California Institute of Technology
local.contributor.affiliationMackay, C D, Cambridge University
local.contributor.affiliationDekany, Richard G, California Institute of Technology
local.contributor.affiliationIreland, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLloyd, J P, Cornell University
local.contributor.affiliationMoore, A M, California Institute of Technology
local.contributor.affiliationRobertson, James G, University of Sydney
local.contributor.affiliationTuthill, Peter G, University of Sydney
local.contributor.affiliationWoodruff, H C, University of Sydney
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage924
local.bibliographicCitation.lastpage930
local.identifier.doi10.1088/0004-637X/692/1/924
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2016-02-24T09:59:32Z
local.identifier.scopusID2-s2.0-70449657160
CollectionsANU Research Publications

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