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

Yinbing Gong; Yongjun Xie; Rongguang Dong; Xianglong Mao; Tao Zhang; Songbo Xu

doi:10.1117/12.2520199

24 January 2019 Modeling and analysis of image rotation for the AIMS solar optical telescope

Yinbing Gong, Yongjun Xie, Rongguang Dong, Xianglong Mao, Tao Zhang, Songbo Xu

Proceedings Volume 11052, Third International Conference on Photonics and Optical Engineering; 1105207 (2019) https://doi.org/10.1117/12.2520199
Event: The International Conference on Photonics and Optical Engineering, 2018, Xi'an, China

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.

Citation Download Citation

Yinbing Gong, Yongjun Xie, Rongguang Dong, Xianglong Mao, Tao Zhang, and Songbo Xu "Modeling and analysis of image rotation for the AIMS solar optical telescope", Proc. SPIE 11052, Third International Conference on Photonics and Optical Engineering, 1105207 (24 January 2019); https://doi.org/10.1117/12.2520199

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KEYWORDS

Mirrors

Telescopes

Image analysis

Solar telescopes

Stars

Sun

Dynamical systems

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