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Displacement Sensors Applied on Active Optics in Astronomical Telescope
Qi Yongjun; Zhang Zhenchao
Source PublicationMillimeter and Submillimeter Detectors and Instrumentation for Astronomy III
PagesVol.6275 1X-1-5
Conference Date2006-5-24
Conference PlaceOrlando, FL
Funding OrganizationThe International Society for Optical Engineering
Many types displacement sensors used in active optics in many astronomical telescopes over the world ware describedand the measurement theory of different sensors were explained in this paper. Based on the displacement sensor’s specification of LAMOST, a test bed to check it which used dual-frequency laser interferometer was established. Some main parameters affect on the measurement accuracy of the test bed such as temperature, vibration as well as some mechanism characteristics of fixing devices were analyzed in detail, and correspond solutions were adopted. According to theoretic analysis, rectification method was brought forward to compensate the errors of sensor cause by tip-tilt, thermal shift, non-linearity, and combined with the test results of some types sensors, their advantages and disadvantages was concluded. At last it forecasted the most appropriate displacement will be used in future active optics based on the discussion above and the developing trend of large telescope.
KeywordDisplacement Sensor Active Optics Lamost Laser Interferometer Rectification
Subject Area郭守敬望远镜(lamost) ; 天文技术与方法
Document Type会议论文
Recommended Citation
GB/T 7714
Qi Yongjun,Zhang Zhenchao. Displacement Sensors Applied on Active Optics in Astronomical Telescope[C]:SPIE,2006:Vol.6275 1X-1-5.
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