Ritchey–Common sparse-aperture testing of the Giant Steerable Science Mirror

doi:10.1364/AO.57.007764

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Ritchey–Common sparse-aperture testing of the Giant Steerable Science Mirror
	An, Qichang; Zhang, Jingxu; Yang, Fei; Zhao, Hongchao; Cao, Haifeng
刊名	Applied Optics
	2018
卷号	57 期号:27 页码:7764-7769
关键词	Optical testing Error analysis Mirrors Optical telescopes Phosphorus compounds Tin compounds
ISSN号	1559128X
DOI	10.1364/AO.57.007764
英文摘要	The Giant Steerable Science Mirror (GSSM) is the tertiary mirror of the future large telescope, the Thirty Meter Telescope. However, the mirror is too large to be tested using only one aperture, and using many apertures will increase the cost of testing. To accomplish testing at a low cost, the number of apertures should be reduced. The RitcheyCommon (RC) testing method, commonly used for testing large flat surfaces, uses only a reference spherical mirror and avoids the use of large planar interferometers. Additionally, only the low-spatial-frequency mirror figure is relevant in the system assembly and alignment. Hence, the applicability of sparse-aperture testing is investigated in this paper. Sparse-aperture testing and the RC method were combined to lower the cost. Using this method and the normalized point source sensitivity (PSSn), the mirror figure can be specified in a simple and accurate manner. Moreover, as fewer subapertures are under test, the efficiency can be improved. An error analysis is conducted, focusing on the shifting error, irregularity error, tipping error, tangential/sagittal error, and seeing. For the testing of the GSSM prototype, the error analysis showed the total error in PSSn is 0.9701. 2018 Optical Society of America.
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/61139]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	An, Qichang,Zhang, Jingxu,Yang, Fei,et al. Ritchey–Common sparse-aperture testing of the Giant Steerable Science Mirror[J]. Applied Optics,2018,57(27):7764-7769.
APA	An, Qichang,Zhang, Jingxu,Yang, Fei,Zhao, Hongchao,&Cao, Haifeng.(2018).Ritchey–Common sparse-aperture testing of the Giant Steerable Science Mirror.Applied Optics,57(27),7764-7769.
MLA	An, Qichang,et al."Ritchey–Common sparse-aperture testing of the Giant Steerable Science Mirror".Applied Optics 57.27(2018):7764-7769.