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A compact adaptive optics system with 3mm narrow-interval deformable mirror

Authors :
Xuejun Rao
Hao Xian
Kai Wei
Lixia Xue
Ang Zhang
Shanqiu Chen
Xiaojun Zhang
Yudong Zhang
Min Li
Changhui Rao
Donghong Chen
Source :
SPIE Proceedings.
Publication Year :
2014
Publisher :
SPIE, 2014.

Abstract

A 3mm narrow interval deformable mirror (DM) with tip-tilt stage has been developed for astronomical instruments. Benefiting from its compact design, the adaptive optics system can be built with simple structure and smaller optical elements. First, a 37-elements prototype mirror has been developed for our 1.8-meter telescope, which interval space is 3mm, maximum tilt is ±10’, and maximum deformation is ±2μm. Based on this mirror, a simple adaptive optics system has been set up and its performance was tested in the laboratory especially the closed-loop correction ability. This adaptive optics subsystem is scheduled to be mounted at one folded Cassegrain focus of the 1.8-meter telescope this year, and comparison test for star compensation observation using this compact system and conventional adaptive optics system will also be carried out at the same time.

Details

ISSN :
0277786X
Database :
OpenAIRE
Journal :
SPIE Proceedings
Accession number :
edsair.doi...........aaf13355bd5f20169b4ddf9c3811066d