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An indoor three-mirror phasing experiment system based on a dispersed Hartmann type sensor
Yong Zhang; Xiangqun Cui; Genrong Liu; Yuefei Wang; Yeping Li; Yajun Zhang; Liang Zhang; Yizhong Zeng
2010-07-28
Source PublicationGround-based and Airborne Telescopes III
Volume7733
Issue7733
PagesVol.7733 52-1-11
Conference Date2010-6-27
Conference PlaceSan Diego, California, USA
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
Telescope with much larger primary can collect much more light and it is always pursued by the astronomers. Instead of using a monolithic primary, more and more large telescopes, which are now planed or in construction, invariably adopted segmented primary mirror. Therefore, how to sense and phase the primary mirror is the key technology. Unlike edge sensors, which need careful calibrations, dispersed Hartmann sensor (DHS) is non-contact method using broadband point light sources, and it can estimate piston by the two-direction spectrum formed by the transmissive grating’s dispersion and lenslet array. Thus it can realize the combination of co-focusing and co-phasing. In this paper, we introduce the design of our dispersed Hartmann sensor together with its principle. We also manufacture a DHS sensor and do real tests on our existing segmented mirror optics platform. Finally some conclusions are given based on the test results.
KeywordLarge Telescope Segmented Mirror Active Optics Dispersed Hartmann Sensor Segment Phasing
Subject Area主动光学
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/581
Collection中国科学院南京天文光学技术研究所_会议论文
望远镜新技术研究室_会议论文
Recommended Citation
GB/T 7714
Yong Zhang,Xiangqun Cui,Genrong Liu,et al. An indoor three-mirror phasing experiment system based on a dispersed Hartmann type sensor[C]:SPIE,2010:Vol.7733 52-1-11.
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