The Measurement of Shifting of the Optic Axis of the YNAO 1m Solar Telescope

Xiao Qigong; Liu Guangqian; Deng Linhua; Cheng Xiangming

Astronomical Research and Technology > 2013 > 10(2): 179-184.

Xiao Qigong, Liu Guangqian, Deng Linhua, Cheng Xiangming. The Measurement of Shifting of the Optic Axis of the YNAO 1m Solar Telescope[J]. Astronomical Research and Technology, 2013, 10(2): 179-184.

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The Measurement of Shifting of the Optic Axis of the YNAO 1m Solar Telescope

1.
Laboratory of Optics & Electronics, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.
Graduate School of the Chinese Academy of Science, Beijing 100049, China

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Received Date: April 25, 2012
Revised Date: May 05, 2012
Published Date: April 14, 2013

Graphical Abstract

Abstract

Abstract

In the tracking process of the YNAO 1m solar telescope, a deviation between the optic axes of the telescope and its guiding telescope will affect the auto-guiding tracking. This paper analyzes such a deviation with numerical simulation and measurement. We first introduce the basic structure of the 1m solar telescope and the auto-guiding system, set up the model for the telescope tube through the finite-element method, derive the relation of the deflection angle versus the altitude of the telescope, and simulate the track of a stellar image affected by the deflection angle. Considering the structure of the entire telescope, we propose a method for measuring a deviation between the optic axes to obtain the relation between the deflection angle and altitude. We finally use some observed data to find actual values of the relation.
- The 1m solar telescope,
- Auto-guiding tracking,
- Deviations between optic axes

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References (6)

References

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