利用恒星对天文观测系统光轴平行性检校
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摘要
基于地基天文观测系统光轴平行性的校验需求,建立了一套高精度多光轴平行性检测系统。针对具有成像光谱仪的天文观测系统,将恒星作为点光源,利用天文跟踪系统完成对恒星星象及相应光谱数据的同步采集。在光谱维视场中,成像光谱仪不易准确地确定恒星的位置,该检测方案利用赤道仪控制系统和成像光谱仪狭缝视场的特点,对恒星目标进行一维扫描,将成像光谱仪接收到的恒星能量随着扫描位置进行拟合来确定光谱维视场中心,通过高斯拟合法来计算光学仪器之间光轴的平行性偏差。试验结果表明:测量结果不确定度为1.52",该检测系统结构简单,满足成像光谱仪和其它成像仪器野外高精度快速检测光轴一致性的要求。
To satisfy the requirement of field measurement of optical axis parallelism for the ground-based astronomical observation system, a high-precision multi-optical axis parallel calibration system was put forward. For astronomical observation system which contains the imaging spectrometer, a star was used as a point source, and the star image and its spectrum was synchronous acquisition by using the astronomy tracking system. It was not easy to determine the center of field of view in spectral dimension of the imaging spectrometer, and the scheme takes advantage of control system of the equatorial and a small field of view of the imaging spectrometer, so the center of field of view in spectral dimension was calculated by fitting energy of scanning the target star with respect to the scanning position, then the bias of optical axis parallelism between the instrument was calculated by Gaussian fitting. Experimental results show that the standard uncertainty of this measurement can reach 1.52″, and the optical measurement system structure is simple, so it meets the need of field optical axis parallel measurement with high precision and high speed between the imaging spectrometer and other imaging instrument.
To satisfy the requirement of field measurement of optical axis parallelism for the ground-based astronomical observation system, a high-precision multi-optical axis parallel calibration system was put forward. For astronomical observation system which contains the imaging spectrometer, a star was used as a point source, and the star image and its spectrum was synchronous acquisition by using the astronomy tracking system. It was not easy to determine the center of field of view in spectral dimension of the imaging spectrometer, and the scheme takes advantage of control system of the equatorial and a small field of view of the imaging spectrometer, so the center of field of view in spectral dimension was calculated by fitting energy of scanning the target star with respect to the scanning position, then the bias of optical axis parallelism between the instrument was calculated by Gaussian fitting. Experimental results show that the standard uncertainty of this measurement can reach 1.52″, and the optical measurement system structure is simple, so it meets the need of field optical axis parallel measurement with high precision and high speed between the imaging spectrometer and other imaging instrument.
引文
[1]Song Junru,Xing Hui,Mu Shengbo,et al.Alignment of aerial multi-angle infrared camera[J].Optics&Precision Engineering,2015,23(8):2125-2133.(in Chinese)宋俊儒,邢辉,穆生博,等.航空红外相机的装调[J].光学精密工程,2015,23(8):2125-2133.
[2]Du Yang,Gao Zhishan.Lens centering using high-precision three coordinate measuring machine[J].Optics&Precision Engineering,2015,23(3):639-644.(in Chinese)杜洋,高志山.使用高精度三坐标测量仪实现透镜定中心[J].光学精密工程,2015,23(3):639-644.
[3]Wang S,Li Z,Huang Y,et al.Alignment of optical axis parallelism in multi-axis system[J].Chinese Optics Letters,2015,13(s1):1202.
[4]Shi Shengbing.Design and realization of test system for testing parallelism and jumpiness of optical axis of photoelectric equipment[J].Contact Dermatitis,2008,58(5):299-306.
[5]Jin Weiqi,Wang Xia,Zhang Qiyang,et al.Technical progress and its analysis in detecting of multi-axes parallelism system[J].Infrared&Laser Engineering,2010,39(3):526-531.(in Chinese)金伟其,王霞,张其扬,等.多光轴一致性检测技术进展及其分析[J].红外与激光工程,2010,39(3):526-531.
[6]Liu Yachen,Zhang,Xinlei,Gao Yang,et al.Study of muli-spectral axes paralllesm calibration of photoelectric tracking and aiming system[J].Journal of Astronautic Metrology and Measurement,2015(4):5-8.(in Chinese)刘亚辰,张新磊,高扬,等.光电跟踪瞄准系统的多光轴平行度校准方法研究[J].宇航计测技术,2015(4):5-8.
[7]He Qiuhui,Kong Dali,Liu Daizhong.On the adjustment of the polaraxis of an equatorial telescope[J].Astronomical Research&Technology,2010,7(3):238-246.(in Chinese)何秋会,孔大力,刘岱钟.赤道式天文望远镜极轴调整分析及观测结果[J].天文研究与技术,2010,7(3):238-246.
[8]Qu Qing,Cao Zhaoliang,Hu Lifa,et al.Greenwood frequency measurement of atmospheric turbulence by phase difference method[J].Chinese Optics,2015,8(1):121-129.(in Chinese)瞿青,曹召良,胡立发,等.位相差值法测量大气湍流格林伍德频率[J].中国光学,2015,8(1):121-129.
[9]Xiang E,Lu Xiaomeng,Jiang Xiaojun.Lucky imaging system on the 50 cm telescope at Xinglong observatory[J].Infrared&Laser Engineering,2015,44(4):1278-1283.(in Chinese)向娥,卢晓猛,姜晓军.基于兴隆观测基地50cm望远镜的幸运成像系统[J].红外与激光工程,2015,44(4):1278-1283.
[10]Chen W Z,Zhang C H,Zhou X D.Study of star-sky image background characteristics based on local-histogram gaussian fitting method[J].Infrared Technology,2008,30(4):230-233.
[11]Li Dongning,Wang Chenglong,Wang Liqiu,et al.Comparison of ground-based photometric measurement way[J].Chinese Optics,2015,8(3):456-463.(in Chinese)李冬宁,王成龙,王丽秋,等.地基光度测量方式对比[J].中国光学,2015,8(3):456-463.
[12]Luo Qi,Li Xinyang.Design of optical axis jitter rejection controller for adaptive optics systems[J].Infrared&Laser Engineering,2016,45(4):0432003.(in Chinese)罗奇,李新阳.自适应光学系统光轴抖动抑制控制器设计[J].红外与激光工程,2016,45(4):0432003.
[2]Du Yang,Gao Zhishan.Lens centering using high-precision three coordinate measuring machine[J].Optics&Precision Engineering,2015,23(3):639-644.(in Chinese)杜洋,高志山.使用高精度三坐标测量仪实现透镜定中心[J].光学精密工程,2015,23(3):639-644.
[3]Wang S,Li Z,Huang Y,et al.Alignment of optical axis parallelism in multi-axis system[J].Chinese Optics Letters,2015,13(s1):1202.
[4]Shi Shengbing.Design and realization of test system for testing parallelism and jumpiness of optical axis of photoelectric equipment[J].Contact Dermatitis,2008,58(5):299-306.
[5]Jin Weiqi,Wang Xia,Zhang Qiyang,et al.Technical progress and its analysis in detecting of multi-axes parallelism system[J].Infrared&Laser Engineering,2010,39(3):526-531.(in Chinese)金伟其,王霞,张其扬,等.多光轴一致性检测技术进展及其分析[J].红外与激光工程,2010,39(3):526-531.
[6]Liu Yachen,Zhang,Xinlei,Gao Yang,et al.Study of muli-spectral axes paralllesm calibration of photoelectric tracking and aiming system[J].Journal of Astronautic Metrology and Measurement,2015(4):5-8.(in Chinese)刘亚辰,张新磊,高扬,等.光电跟踪瞄准系统的多光轴平行度校准方法研究[J].宇航计测技术,2015(4):5-8.
[7]He Qiuhui,Kong Dali,Liu Daizhong.On the adjustment of the polaraxis of an equatorial telescope[J].Astronomical Research&Technology,2010,7(3):238-246.(in Chinese)何秋会,孔大力,刘岱钟.赤道式天文望远镜极轴调整分析及观测结果[J].天文研究与技术,2010,7(3):238-246.
[8]Qu Qing,Cao Zhaoliang,Hu Lifa,et al.Greenwood frequency measurement of atmospheric turbulence by phase difference method[J].Chinese Optics,2015,8(1):121-129.(in Chinese)瞿青,曹召良,胡立发,等.位相差值法测量大气湍流格林伍德频率[J].中国光学,2015,8(1):121-129.
[9]Xiang E,Lu Xiaomeng,Jiang Xiaojun.Lucky imaging system on the 50 cm telescope at Xinglong observatory[J].Infrared&Laser Engineering,2015,44(4):1278-1283.(in Chinese)向娥,卢晓猛,姜晓军.基于兴隆观测基地50cm望远镜的幸运成像系统[J].红外与激光工程,2015,44(4):1278-1283.
[10]Chen W Z,Zhang C H,Zhou X D.Study of star-sky image background characteristics based on local-histogram gaussian fitting method[J].Infrared Technology,2008,30(4):230-233.
[11]Li Dongning,Wang Chenglong,Wang Liqiu,et al.Comparison of ground-based photometric measurement way[J].Chinese Optics,2015,8(3):456-463.(in Chinese)李冬宁,王成龙,王丽秋,等.地基光度测量方式对比[J].中国光学,2015,8(3):456-463.
[12]Luo Qi,Li Xinyang.Design of optical axis jitter rejection controller for adaptive optics systems[J].Infrared&Laser Engineering,2016,45(4):0432003.(in Chinese)罗奇,李新阳.自适应光学系统光轴抖动抑制控制器设计[J].红外与激光工程,2016,45(4):0432003.