Multi-Object Adaptive Optics On-sky Results with RAVEN

• Type: Article in International Conference Proceedings Book
• Date: 2014

Authors

Lardiere, O (Author) Other; Andersen, D (Author) Other; Blian, C (Author) Other; Bradley, C (Author) Other; Gamroth, D (Author) Other; Jackson, K (Author) Other; Lach, P (Author) Other; Nash, R (Author) Other; Venn, K (Author) Other; Veran, JP (Author) Other; Correia, C (Author) FCUP; Oya, S (Author) Other; Hayano, Y (Author) Other; Terada, H (Author) Other; Ono, Y (Author) Other; Akiyama, M (Author) Other

Conference proceedings International

Title: ADAPTIVE OPTICS SYSTEMS IV

Conference on Adaptive Optics Systems IV

Montreal, CANADA, JUN 22-27, 2014

Indexing

ISI Web of Knowledge - 18 Citations

Scopus - 17 Citations

Other information

Authenticus ID: P-00A-630

DOI: 10.1117/12.2055480

Abstract (EN): 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-&-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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14