Show simple item record

dc.contributor.authorGoebel, Sean B.
dc.contributor.authorGuyon, Olivier
dc.contributor.authorHall, Donald N. B.
dc.contributor.authorJovanovic, Nemanja
dc.contributor.authorAtkinson, Dani E.
dc.date.accessioned2017-01-18T20:58:21Z
dc.date.available2017-01-18T20:58:21Z
dc.date.issued2016-07-26
dc.identifier.citationSean B. Goebel ; Olivier Guyon ; Donald N. B. Hall ; Nemanja Jovanovic and Dani E. Atkinson " Evolutionary timescales of AO-produced speckles at NIR wavelengths ", Proc. SPIE 9909, Adaptive Optics Systems V, 990918 (July 26, 2016); doi:10.1117/12.2231926; http://dx.doi.org/10.1117/12.2231926en
dc.identifier.issn0277-786X
dc.identifier.doi10.1117/12.2231926
dc.identifier.urihttp://hdl.handle.net/10150/622013
dc.description.abstractWe present measurements of the evolutionary timescales of speckles around adaptive optics-corrected PSFs. We placed a SELEX SAPHIRA HgCdTe detector behind the SCExA0 instrument at Subaru Telescope. We analyzed the behavior of speckles at radial distances of 2-8 A/D away from the diffraction-limited PSF in H-band (-1.6 m) images collected at 1 kHz framerates. Speckles evolve with a variety of timescales, and these have not previously been studied at near-infrared wavelengths. Ultimately we would like to image reflected-light exoplanets, which necessitates a fast speckle control loop. Based on our measurements, we calculate the parameters of an optimized control loop that would enable such observations.
dc.language.isoenen
dc.publisherSPIE-INT SOC OPTICAL ENGINEERINGen
dc.relation.urlhttp://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2231926en
dc.rights© 2016 SPIE.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectExtreme adaptive opticsen
dc.subjectSCExAOen
dc.subjectSAPHIRAen
dc.subjectspecklesen
dc.subjecthigh-contrast imagingen
dc.titleEvolutionary timescales of AO-produced speckles at NIR wavelengthsen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Steward Observen
dc.contributor.departmentUniv Arizona, Coll Opt Scien
dc.identifier.journalADAPTIVE OPTICS SYSTEMS Ven
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
dc.contributor.institutionUniv. of Hawaii (United States)
dc.contributor.institutionSubaru Telescope, National Astronomical Observatory of Japan (United States)
dc.contributor.institutionUniv. of Hawaii (United States)
dc.contributor.institutionSubaru Telescope, National Astronomical Observatory of Japan (United States)
dc.contributor.institutionUniv. of Hawaii (United States)
refterms.dateFOA2018-09-11T16:56:26Z
html.description.abstractWe present measurements of the evolutionary timescales of speckles around adaptive optics-corrected PSFs. We placed a SELEX SAPHIRA HgCdTe detector behind the SCExA0 instrument at Subaru Telescope. We analyzed the behavior of speckles at radial distances of 2-8 A/D away from the diffraction-limited PSF in H-band (-1.6 m) images collected at 1 kHz framerates. Speckles evolve with a variety of timescales, and these have not previously been studied at near-infrared wavelengths. Ultimately we would like to image reflected-light exoplanets, which necessitates a fast speckle control loop. Based on our measurements, we calculate the parameters of an optimized control loop that would enable such observations.


Files in this item

Thumbnail
Name:
990918.pdf
Size:
678.9Kb
Format:
PDF
Description:
FInal Published Version

This item appears in the following Collection(s)

Show simple item record