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Sökning: onr:"swepub:oai:DiVA.org:uu-300215" > Commissioning and f...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00004830naa a2200673 4500
001oai:DiVA.org:uu-300215
003SwePub
008160805s2016 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3002152 URI
0247 a https://doi.org/10.1117/12.22332282 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a kon2 swepub-publicationtype
1001 a Castellá, Bruno Femeníau W. M. Keck Observatory, USA4 aut
2451 0a Commissioning and first light results of an L’-band vortex coronagraph with the Keck II adaptive optics NIRC2 science instrument
264 1b SPIE - International Society for Optical Engineering,c 2016
338 a print2 rdacarrier
520 a On March 2015 an L'-band vortex coronagraph based on an Annular Groove Phase Mask made up of a diamond sub-wavelength grating was installed on NIRC2 as a demonstration project. This vortex coronagraph operates in the L' band not only in order to take advantage from the favorable star/planet contrast ratio when observing beyond the K band, but also to exploit the fact that the Keck II Adaptive Optics (AO) system delivers nearly extreme adaptive optics image quality (Strehl ratios values near 90%) at 3.7 mu m. We describe the hardware installation of the vortex phase mask during a routine NIRC2 service mission. The success of the project depends on extensive software development which has allowed the achievement of exquisite real-time pointing control as well as further contrast improvements by using speckle nulling to mitigate the effect of static speckles. First light of the new coronagraphic mode was on June 2015 with already very good initial results. Subsequent commissioning nights were interlaced with science nights by members of the VORTEX team with their respective scientific programs. The new capability and excellent results so far have motivated the VORTEX team and the Keck Science Steering Committee (KSSC) to offer the new mode in shared risk mode for 2016B.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650 7a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng
653 a WM Keck Observatory
653 a NIRC2
653 a high-contrast imaging
653 a coronagraph
653 a vortex phase mask
7001 a Serabyn, Eugeneu Jet Propulsion Laboratory, USA4 aut
7001 a Mawet, Dimitriu California Institute of Technology, USA4 aut
7001 a Absil, Olivieru University of Liège, Belgium4 aut
7001 a Wizinowich, Peteru W. M. Keck Observatory, USA4 aut
7001 a Matthews, Keithu California Institute of Technology, USA4 aut
7001 a Huby, Elsau University of Liège, Belgium4 aut
7001 a Bottom, Michaelu California Institute of Technology, USA4 aut
7001 a Campbell, Randyu W. M. Keck Observatory, USA4 aut
7001 a Chan, Dwightu W. M. Keck Observatory, USA4 aut
7001 a Carlomagno, Brunellau University of Liège, Belgium4 aut
7001 a Cetre, Sylvianu W. M. Keck Observatory, USA4 aut
7001 a Defrère, Denisu Steward Observatory, USA4 aut
7001 a Delacroix, Christianu Cornell University, USA4 aut
7001 a Gonzalez, Carlos Gomezu University of Liège, Belgium4 aut
7001 a Jolivet, Aissau University of Liège, Belgium4 aut
7001 a Karlsson, Mikaelu Uppsala universitet,Tillämpad materialvetenskap4 aut0 (Swepub:uu)mka11187
7001 a Lanclos, Kyleu W. M. Keck Observatory, USA4 aut
7001 a Lilley, Scottu W. M. Keck Observatory, USA4 aut
7001 a Milner, Stevenu W. M. Keck Observatory, USA4 aut
7001 a Ngo, Henryu California Institute of Technology, USA4 aut
7001 a Reggiani, Maddalenau University of Liège, Belgium4 aut
7001 a Simmons, Juliau W. M. Keck Observatory, USA4 aut
7001 a Tran, Hienu W. M. Keck Observatory, USA4 aut
7001 a Vargas Catalan, Ernestou Uppsala universitet,Tillämpad materialvetenskap4 aut0 (Swepub:uu)ernva826
7001 a Wertz, Olivieru University of Liège, Belgium4 aut
7102 a W. M. Keck Observatory, USAb Jet Propulsion Laboratory, USA4 org
7730 t Adaptive Optics Systems Vd : SPIE - International Society for Optical Engineering
8564 u https://repository.arizona.edu/bitstream/10150/622007/1/990922.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300215
8564 8u https://doi.org/10.1117/12.2233228

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