内掩式透射地基日冕仪中杂光鬼像的消除

卜和阳; 卢振武; 张红鑫; 孙明哲

doi:10.3788/CO.20130602.0231

Volume 6 Issue 2

Apr. 2013

Turn off MathJax

Article Contents

Chinese Optics > 2013 > 6(2): 231-236.

BU He-yang, LU Zhen-wu, ZHANG Hong-xin, SUN Ming-zhe. Suppresion of stray light ghost image in internally occulting refractive ground-based coronagraph[J]. Chinese Optics, 2013, 6(2): 231-236. doi: 10.3788/CO.20130602.0231

Citation:

BU He-yang, LU Zhen-wu, ZHANG Hong-xin, SUN Ming-zhe. Suppresion of stray light ghost image in internally occulting refractive ground-based coronagraph[J]. Chinese Optics, 2013, 6(2): 231-236. doi: 10.3788/CO.20130602.0231

Citation:

PDF( 950 KB)

Suppresion of stray light ghost image in internally occulting refractive ground-based coronagraph

doi: 10.3788/CO.20130602.0231

1.
Opto-electronics Technology Center, 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

More Information

Corresponding author: LU Zhen-wu
Received Date: 15 Dec 2012
Rev Recd Date: 16 Feb 2013
Publish Date: 10 Apr 2013

Abstract

Abstract

In order to improve the imaging quality of coronagraphs, the ghost image caused by multi-reflection light from an objective lens for the internally occulting refractive ground-based coronagraph is analyzed at a band from 530 nm to 555 nm. The coronagraph with an aperture of 120 nm shows its main specifications in a field of view of 1.1 to 3R⊙, a resolution of 13.5 m, and F number of 8.2. The paper analyzes its imaging theory and establishes a model for the ghost image. Then, it presents the structure masking measures and performs an experimental demonstration. The experiment result shows that the masking structure is effective on the elimination of ghost image. In addition, the intensity of ghost image and the intensity of diffracted light of objective lens edge are basically the same. The experiment also illuminates that the size of ghost image is the same as the simulation result of 0.9 mm.The ghost image suppressing further improves the capability of elimination of stray light and the image quality of the coronagraph achieves the effective observation of the solar corona.
- internally occulting refractive ground-based coronagraph,
- ghost image,
- stray light,
- structure masking

FullText(HTML)

References(1)

References

[1] 胡中为,赵海斌,姚进生.日全食时的日冕光学观测[J].科学通报,2009,54(13):1841-1849. HU ZH W,ZHAO H B,YAO J S. Optical observation of the solar corona at total solar eclipse[J]. Chinese Sci Bull,2009,54(13):1841-1849.(in Chinese) [2] 王水.日冕物质抛射与空间天气学[J].中国基础科学,2000,4:12-15. WANG S. Coronal mass ejections and space weather[J]. China Basic Science,2000,4:12-15.(in Chinese) [3] 宋丽敏,张军,杨志良,等.对地日冕物质抛射研究[J].天文学进展,2002,20(1):33-43. SONG L M,ZHANG J,YANG ZH L,et al.. Earth-directed coronal mass ejection[J]. Progress in Astronomy,2002,20(1):33-43.(in Chinese) [4] 赵海斌,林启生,陈一平,等.2008年8月1日日全食的日冕结构和亮度分布[J].科学通报,2009,54(12):1790-1792. ZHAO H B,LIN Q SH,CHEN Y P,et al.. Coronal structure and brightness profile of the total solar eclipse on August 1, 2008[J]. Chinese Sci Bull, 2009,54(12):1790-1792.(in Chinese) [5] 尤建圻.空间日冕观测进展[J].天文学进展,1999,17(4):299-308. YOU J Q. Progress in space observations of the corona[J]. Progress in Astronomy,1999,17(4):299-308.(in Chinese) [6] 张奇岩."太阳与日光层观测台"揭示太阳的秘密[J].中国科教创新导刊,2006(7):7-10. ZHANG Q Y. "Solar and Heliospheric Observatory" reveal the secrets of the sun[J]. China Education Innovation Herald,2006(7):7-10.(in Chinese) [7] BRUECKNER G E,HOWARD R A,KOOMEN M J,et al.. The large angle spectroscopic coronagraph(LASCO)[J]. Solar Physics,1995,162:357-402. [8] THOMPSON W, DAVILA J, MENTZELL E. Calibration results for the COR-1 coronagraph on STEREO/SECCHI,SH21B-0408[R]. Washington:American Geophysical Union,Fall Meeting 2004. [9] THOMPSON W T,DAVILA J M,FISHER R R,et al.. COR1 inner coronagraph for STEREO-SECCHI, in Innovative Telescopes and Instrumentation for Solar Astrophysics[J]. SPIE,2003,4853:1-11. [10] HOWARD R A,MOSES J D,VOURLIDAS A,et al.. Sun earth connection coronal and heliospheric investigation(SECCHI)[J]. Space Sci Rev,2008,136:67-115. [11] 张红鑫,卢振武,夏利东,等.白光日冕仪光学系统的杂散光抑制[J].光学精密工程,2009,17(10):2371-2376. ZHANG H X,LU ZH W,XIA D L,et al.. Stray light suppressing of optical system in white light coronagraph[J]. Opt. Precision Eng.,2009,17(10):2371-2376.(in Chinese) [12] 李萍,卢振武,夏利东,等.反射式内掩日冕仪的光学设计与杂散光分析[J].中国光学与应用光学,2009,2(5):408-413. LI P,LU ZH W, XIA D L,et al.. Stray light analysis of internallyocculted mirror coronagraph[J]. Chinese J. Opt. Appl. Opt.,2009,2(5):408-413.(in Chinese)

Relative Articles

Supplements(0)

Cited By

Proportional views