Status of the Raven MOAO science demonstrator

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DOIResolve DOI: http://doi.org/10.1117/12.926854
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TypeArticle
Proceedings titleAdaptive Optics Systems III
Series titleProceedings of SPIE; Volume 8447
ConferenceAdaptive Optics Systems III, July 1-6, 2012, Amsterdam, Netherlands
ISSN0277-786X
ISBN9780819491480
Article number84473F
SubjectAlignment technique; Calibration unit; Deformable mirrors; Ground layer; Laser guide star; Multiobject; Multiple source; Phase screen; Wave front sensors; Calibration; Electric appliances; Adaptive optics
AbstractRaven is a Multi-Object Adaptive Optics (MOAO) scientific demonstrator which will be used on-sky at the Subaru observatory. Raven is currently being built at the University of Victoria AO Lab. In this paper, we present an overview of the final Raven design and then describe lab tests involving prototypes of Raven subsystems. The final design includes three open loop wavefront sensors (WFSs), a laser guide star WFS and two figure/truth WFSs. Two science channels, each containing a deformable mirror (DM), feed light to the Subaru IRCS spectrograph. Central to the Raven MOAO system is a Calibration Unit (CU) which contains multiple sources, a telescope simulator including two rotating phase screens and a ground layer DM that can be used to calibrate and test Raven. We are working with the Raven CU and open loop WFSs to test and validate our open loop calibration and alignment techniques.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Science Infrastructure
Peer reviewedYes
NPARC number21270297
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Record identifier44f70959-30be-4822-a9db-04ab7ac36c9b
Record created2014-01-21
Record modified2017-09-13
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