大口径空间巡天望远镜子孔径拼接平场定标法

逯诗桐; 张天一; 张晓辉

doi:10.37188/CO.2019-0252

Volume 13 Issue 5

Sep. 2020

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Chinese Optics > 2020 > 13(5): 1094-1102.

LU Shi-tong, ZHANG Tian-yi, ZHANG Xiao-hui. Flat-field calibration method for large diameter survey mirror aperture splicing[J]. Chinese Optics, 2020, 13(5): 1094-1102. doi: 10.37188/CO.2019-0252

Citation:

LU Shi-tong, ZHANG Tian-yi, ZHANG Xiao-hui. Flat-field calibration method for large diameter survey mirror aperture splicing[J]. Chinese Optics, 2020, 13(5): 1094-1102. doi: 10.37188/CO.2019-0252

LU Shi-tong, ZHANG Tian-yi, ZHANG Xiao-hui. Flat-field calibration method for large diameter survey mirror aperture splicing[J]. Chinese Optics, 2020, 13(5): 1094-1102. doi: 10.37188/CO.2019-0252

Citation:

LU Shi-tong, ZHANG Tian-yi, ZHANG Xiao-hui. Flat-field calibration method for large diameter survey mirror aperture splicing[J]. Chinese Optics, 2020, 13(5): 1094-1102. doi: 10.37188/CO.2019-0252

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Flat-field calibration method for large diameter survey mirror aperture splicing

doi: 10.37188/CO.2019-0252

LU Shi-tong^{1, 2
,},
ZHANG Tian-yi^1
,,
ZHANG Xiao-hui^{1
,
,}

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds: Supported by National Natural Science Foundation of China (No. 61875190).

More Information

Corresponding author: zhangxiaohui0123@163.com
Received Date: 03 Jan 2020
Rev Recd Date: 18 Feb 2020

Available Online: 01 Sep 2020

Publish Date: 05 Oct 2020

Abstract

Abstract

The accurate flat-field calibration of large-diameter space survey telescopes is an important prerequisite for achieving some established scientific goals. At present, it is common practice to provide a uniform flat-field reference through a flat-field screen or a large-diameter integrating sphere, which is used to check the consistency of an image’s plane response. To address issues with the uniformity of flat-field screen illumination and the difficulty of preparing large-size integrating spheres, a flat-field calibration method based on sub-aperture scanning is proposed in this paper, which improves the uniformity of the flat-field reference and the uncertain calibration caused by stray light. First, we complete a sub-aperture flat-field calibration theory analysis, establish a sub-aperture flat-field calibration mathematical model, plan the sub-aperture scanning route and scan aperture size, and perform the initial design of the parameters of the collimation system for calibration. Secondly, we complete the image surface illumination simulation verification experiment. Finally, we set up an experiment to scan the planned sub-apertures, build full-aperture illuminance data, and verify the feasibility of the above-mentioned large-aperture space survey telescope sub-aperture stitching flat-field calibration scheme. The experimental results show that the full-aperture illuminance information can be restored using the full-aperture stitching method to scan the image surface energy of the system and by using the sub-aperture stitching method to compare and contrast the full-aperture image surface illuminance. The superimposed gray value in our experiment was 233.350 and the error was 1%. It is therefore verified that the sub-aperture stitching method can be used for flat-field calibration of large-diameter sky survey telescopes, and has practical value in real-world applications.
- large diameter,
- flat-field calibration,
- survey telescope,
- sub-aperture stitching

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References(23)

References

[1]	SEBAG J, GRESSLER W J, LIANG M, et al.. Calibration systems for LSST[R]. Tucson, AZ: National Optical Astronomy Observatory, 2014: 85719.
[2]	施建荣. LAMOST望远镜[J]. 科学通报,2016,61(12):1330-1335. doi: 10.1360/N972015-00975 SHI J R. The large sky area multi-object fiber spectroscopic telescope[J]. Chinese Science Bulletin, 2016, 61(12): 1330-1335. (in Chinese) doi: 10.1360/N972015-00975
[3]	赵永恒. 大规模天文光谱巡天[J]. 中国科学: 物理学力学天文学,2014,44(10):1041-1048. ZHAO Y H. Large-scale astronomical spectroscopic surveys[J]. Scientia Sinica Physica, Mechanica & Astronomica, 2014, 44(10): 1041-1048. (in Chinese)
[4]	郝钟雄. 天文望远镜现状及发展趋势[J]. 现代科学仪器,2007(5):30-34. doi: 10.3969/j.issn.1003-8892.2007.05.008 HAO ZH X. Status and trends of astronomical telescope[J]. Modern Scientific Instruments, 2007(5): 30-34. (in Chinese) doi: 10.3969/j.issn.1003-8892.2007.05.008
[5]	赵晓熠. 超大口径凝视相机定标方法研究[D]. 哈尔滨: 哈尔滨工业大学, 2010. ZHAO X Y. The study of riadiometric calibration for staring camera with large diameter[D]. Harbin: Harbin Institute of Technology, 2010. (in Chinese)
[6]	岳巾英, 李素文, 何玲平. 一种基于非均匀目标的空间相机平场定标方法[J]. 光学仪器,2016,38(1):35-40. doi: 10.3969/j.issn.1005-5630.2016.01.008 YUE J Y, LI S W, HE L P. A flat field calibration method of space camera based on a non-uniform target[J]. Optical Instruments, 2016, 38(1): 35-40. (in Chinese) doi: 10.3969/j.issn.1005-5630.2016.01.008
[7]	江孝国, 张开志, 李成刚, 等. 图像平场校正方法的扩展应用研究[J]. 光子学报,2007,36(9):1587-1590. JIANG X G, ZHANG K ZH, LI CH G, et al. Extended applications of image flat-field correction method[J]. Acta Photonica Sinica, 2007, 36(9): 1587-1590. (in Chinese)
[8]	任建伟, 刘则洵, 万志, 等. 离轴三反宽视场空间相机的辐射定标[J]. 光学精密工程,2010,18(7):1491-1497. REN J W, LIU Z X, WAN ZH, et al. Radiometric calibration of off-axis three-mirror-anastigmat space camera with wide viewing field[J]. Optics and Precision Engineering, 2010, 18(7): 1491-1497. (in Chinese)
[9]	RHEAULT J P, DEPOY D L, MARSHALL J L, et al.. DECal: a spectrophotometric calibration system for DECam[C]. SPIE Astronomical Telescopes Instrumentation, 2013
[10]	李东景, 于平, 齐心达. 星上定标积分球系统的设计[J]. 光电子技术,2011,31(1):57-62. doi: 10.3969/j.issn.1005-488X.2011.01.014 LI D J, YU P, QI X D. The design of spaceborne calibration intergrating sphere system[J]. Optoelectronic Technology, 2011, 31(1): 57-62. (in Chinese) doi: 10.3969/j.issn.1005-488X.2011.01.014
[11]	吴世霞. 大口径平面检测的子孔径拼接算法研究[D]. 西安: 西安工业大学, 2013. WU SH X. Research on the sub-aperture stitching algorithm for large optical flat testing[D]. Xi'an: Xi'an Technological University, 2013. (in Chinese)
[12]	闫力松. 子孔径拼接干涉检测光学镜面算法的研究[D]. 长春: 中国科学院研究生院(长春光学精密机械与物理研究所), 2015. YAN L S. Research on the algorithm testing optical mirror by subaperture stitching interferometry[D]. Changchun: Changchun Institute of Optics, Fine Mehcanics and Physics, Chinese Academy of Sciences, 2015. (in Chinese)
[13]	COUGHLIN M, ABBOTT T M C, BRANNON K, et al.. A collimated beam projector for precise telescope calibration[C]. Proceeding of SPIE, Observatory Operations: Strategies, Processes and Systems VI, 2018.
[14]	叶钊, 任建伟, 李宪圣, 等. 用于星上定标光源的LED筛选装置[J]. 光学精密工程,2012,20(1):64-71. doi: 10.3788/OPE.20122001.0064 YE ZH, REN J W, LI X SH, et al. Screening device for LED as spaceborne calibration light source[J]. Optics and Precision Engineering, 2012, 20(1): 64-71. (in Chinese) doi: 10.3788/OPE.20122001.0064
[15]	岳智革, 刘福, 赵贵军, 等. 内置LED定标光源的积分球设计[J]. 光学与光电技术,2014,12(4):52-55. YUE ZH G, LIU F, ZHAO G J, et al. Integrating sphere design built-in LED calibration light source[J]. Optics & Optoelectronic Technology, 2014, 12(4): 52-55. (in Chinese)
[16]	李东景, 于平, 王小朋. 星上定标积分球标准光源—稳流源驱动器的研制[J]. 光学精密工程,2010,18(1):212-219. LI D J, YU P, WANG X P. Development of current stabilized source of standard lamp for spaceborne calibration integrating sphere[J]. Optics and Precision Engineering, 2010, 18(1): 212-219. (in Chinese)
[17]	任建伟, 麦镇强, 万志, 等. 星上LED定标光源的可行性研究[J]. 光学精密工程,2008,16(3):398-405. REN J W, MAI ZH Q, WAN ZH, et al. Feasibility of LED light source in spaceborne calibration[J]. Optics and Precision Engineering, 2008, 16(3): 398-405. (in Chinese)
[18]	赫英威, 李平, 吴厚平, 等. 积分球辐射光源照度均匀性研究[J]. 应用光学,2012,33(3):548-553. HE Y W, LI P, WU H P, et al. Output irradiance uniformity of integrating sphere source[J]. Journal of Applied Optics, 2012, 33(3): 548-553. (in Chinese)
[19]	叶钊, 任建伟, 李葆勇, 等. 大口径积分球辐射定标光源辐射性能研究[J]. 宇航计测技术,2012,32(3):39-44. doi: 10.3969/j.issn.1000-7202.2012.03.010 YE ZH, REN J W, LI B Y, et al. The radiation testing research of radiometric calibration source of the large aperture integrating sphere[J]. Journal of Astronautic Metrology and Measurement, 2012, 32(3): 39-44. (in Chinese) doi: 10.3969/j.issn.1000-7202.2012.03.010
[20]	郭悦, 刘晓鹏, 杨桦. 空间CCD相机的定标方法研究[J]. 光学技术,2007,33(S1):237-238. GUO Y, LIU X P, YANG H. Analysis of calibration for space CCD camera[J]. Optical Technique, 2007, 33(S1): 237-238. (in Chinese)
[21]	吴国栋, 张晓辉, 韩昌元, 等. 空间CCD相机辐射标定方法的应用研究[J]. 测试技术学报,2004,18(4):325-329. doi: 10.3969/j.issn.1671-7449.2004.04.010 WU G D, ZHANG X H, HAN CH Y, et al. Radiometric calibration of the space CCD camera[J]. Journal of Test and Measurement Technology, 2004, 18(4): 325-329. (in Chinese) doi: 10.3969/j.issn.1671-7449.2004.04.010
[22]	刘则洵, 全先荣, 任建伟, 等. CCD相机输出非均匀性线性校正系数的定标[J]. 红外与激光工程,2012,41(8):2211-2215. doi: 10.3969/j.issn.1007-2276.2012.08.046 LIU Z X, QUAN X R, REN J W, et al. Calibration of CCD camera's output non-uniformity linear corrected coefficient[J]. Infrared and Laser Engineering, 2012, 41(8): 2211-2215. (in Chinese) doi: 10.3969/j.issn.1007-2276.2012.08.046
[23]	王文华, 何斌, 韩双丽, 等. 星上CCD成像非均匀性的实时校正[J]. 光学精密工程,2010,18(6):1420-1428. WANG W H, HE B, HAN SH L, et al. Real-time correction of nonuniformity in CCD imaging for remote sensing[J]. Optics and Precision Engineering, 2010, 18(6): 1420-1428. (in Chinese)