TY - GEN
T1 - Multi-object adaptive optics on-sky results with Raven
AU - Lardière, Olivier
AU - Andersen, Dave
AU - Blain, Célia
AU - Bradley, Colin
AU - Gamroth, Darryl
AU - Jackson, Kate
AU - Lach, Przemek
AU - Nash, Reston
AU - Venn, Kim
AU - Véran, Jean Pierre
AU - Correia, Carlos
AU - Oya, Shin
AU - Hayano, Yutaka
AU - Terada, Hiroshi
AU - Ono, Yoshito
AU - Akiyama, Masayuki
N1 - Publisher Copyright:
© 2014 SPIE.
PY - 2014
Y1 - 2014
N2 - Raven is a Multi-Object Adaptive Optics (MOAO) technical and science demonstrator which had its first light at the Subaru telescope on May 13-14, 2014. Raven was built and tested at the University of Victoria AO Lab before shipping to Hawai'i. Raven includes three open loop wavefront sensors (WFSs), a central laser guide star WFS, and two independent science channels feeding light to the Subaru IRCS spectrograph. Raven supports different kinds of AO correction: SCAO, open-loop GLAO and MOAO. The MOAO mode can use different tomographic reconstructors, such as Learn-and-Apply or a model-based reconstructor. This paper presents the latest results obtained in the lab, which are consistent with simulated performance, as well as preliminary on-sky results, including echelle spectra from IRCS. Ensquared energy obtained on sky in 140mas slit is 17%, 30% and 41% for GLAO, MOAO and SCAO respectively. This result confirms that MOAO can provide a level of correction in between GLAO and SCAO, in any direction of the field of regard, regardless of the science target brightness.
AB - Raven is a Multi-Object Adaptive Optics (MOAO) technical and science demonstrator which had its first light at the Subaru telescope on May 13-14, 2014. Raven was built and tested at the University of Victoria AO Lab before shipping to Hawai'i. Raven includes three open loop wavefront sensors (WFSs), a central laser guide star WFS, and two independent science channels feeding light to the Subaru IRCS spectrograph. Raven supports different kinds of AO correction: SCAO, open-loop GLAO and MOAO. The MOAO mode can use different tomographic reconstructors, such as Learn-and-Apply or a model-based reconstructor. This paper presents the latest results obtained in the lab, which are consistent with simulated performance, as well as preliminary on-sky results, including echelle spectra from IRCS. Ensquared energy obtained on sky in 140mas slit is 17%, 30% and 41% for GLAO, MOAO and SCAO respectively. This result confirms that MOAO can provide a level of correction in between GLAO and SCAO, in any direction of the field of regard, regardless of the science target brightness.
KW - Multi-Object adaptive optics
KW - Subaru Telescope
KW - first light
KW - infrared spectroscopy
KW - tomography
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U2 - 10.1117/12.2055480
DO - 10.1117/12.2055480
M3 - Conference contribution
AN - SCOPUS:84922730160
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Adaptive Optics Systems IV
A2 - Veran, Jean-Pierre
A2 - Marchetti, Enrico
A2 - Close, Laird M.
PB - SPIE
T2 - Adaptive Optics Systems IV
Y2 - 22 June 2014 through 27 June 2014
ER -