Application of modified sensitivity matrix method in alignment of off-axis telescope

	Application of modified sensitivity matrix method in alignment of off-axis telescope
	Gu, Z.-Y.; C.-X. Yan; X.-B. Li; C.-H. Hu and Y. Wang
	2015
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	23 期号:9 页码:2595-2604
摘要	To calculate the misalignments of optical elements accurately in an off-axis Mersenne afocal Cassegrain telescope, a computer-aided alignment method based on modified sensitivity matrix model was proposed. The principle and limitations of conventional sensitivity matrix method were analyzed. By means of adding a quadratic correction term to conventional sensitivity matrix model, the conventional computer-aided alignment technology was improved. For the off-axis telescope, the aberration characteristics were analyzed when the secondary mirror was misaligned. The modified model and conventional model were used to approximate the mapping relationships between misalignments and aberrations. Then the alignment of misaligned telescope was simulated. The simulation results in the range of decenter 8 mm and tilt 1.5 for a secondary mirror show that the root mean square error of x-, y-, z-decenters and -, -tilts of the secondary mirror calculated by conventional method are 2.689 mm, 2.494 mm, 0.194 mm and 0.500, 0.525 respectively, and the corresponding calculations by modified method are 0.404 mm, 0.323 mm, 0.047 mm and 0.064, 0.065 respectively. The calculation accuracy of the modified sensitivity matrix method is much higher than that of the conventional method. Finally, the telescope is well aligned with the modified method, and the results give that the Wavefront Errors (WFEs) RMS on axis is 0.056(=632.8 nm), while the WFEs RMS (Root Mean Square) in marginal field of view are better than 0.1. The results meet the design requirements. , 2015, Chinese Academy of Sciences. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56034
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Gu, Z.-Y.,C.-X. Yan,X.-B. Li,et al. Application of modified sensitivity matrix method in alignment of off-axis telescope[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2015,23(9):2595-2604.
APA	Gu, Z.-Y.,C.-X. Yan,X.-B. Li,&C.-H. Hu and Y. Wang.(2015).Application of modified sensitivity matrix method in alignment of off-axis telescope.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,23(9),2595-2604.
MLA	Gu, Z.-Y.,et al."Application of modified sensitivity matrix method in alignment of off-axis telescope".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 23.9(2015):2595-2604.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
改进的灵敏度矩阵法在离轴望远镜装调中的应（638KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载