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Proceedings Paper

Modeling and analysis of image rotation for the AIMS solar optical telescope
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Paper Abstract

The AIMS, a solar telescope with a primary mirror of 1m in diameter, is designed with an off-axis Gregorian optical system and an alt-az mounting structure. The image rotation of the AIMS will be produced both due to alt-az mounting and the movement of plane mirrors system during the monitoring of the sun. Therefore, a derotator is planned to correct and compensate the image rotation to make the terminal instruments of the AIMS work properly. The image rotation in astronomical telescopes consists of the object field rotation and the image field rotations. In this paper, the rotation of the object field for the AIMS is presented and calculated. The image field rotation due to the plane mirrors system with the movement of azimuth axis and altitude axis of the AIMS is theoretically determined by using the ray tracing and vector matrix method. The relationships between the image filed rotation and the variation of the azimuth and altitude of the telescope are discussed. This work may be very helpful to evaluate the deroation methods for the AIMS and will provide an important theoretical support for precision control of the derotator to eliminate the image rotation in real time.

Paper Details

Date Published: 24 January 2019
PDF: 8 pages
Proc. SPIE 11052, Third International Conference on Photonics and Optical Engineering, 1105207 (24 January 2019); doi: 10.1117/12.2520199
Show Author Affiliations
Yinbing Gong, Xi'an Institute of Optics and Precision Mechanics (China)
Chang'an Univ. (China)
Yongjun Xie, Xi'an Institute of Optics and Precision Mechanics (China)
Rongguang Dong, Xi'an Institute of Optics and Precision Mechanics (China)
Xianglong Mao, Xi'an Institute of Optics and Precision Mechanics (China)
Tao Zhang, Chang'an Univ. (China)
Songbo Xu, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 11052:
Third International Conference on Photonics and Optical Engineering
Ailing Tian, Editor(s)

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