Modeling and correction of static pointing error of level mounting telescope

Cheng-zhi Liu; Meng-meng Li; Zhen-wei Li

doi:10.1117/12.2255086

7 November 2016 Modeling and correction of static pointing error of level mounting telescope

Cheng-zhi Liu, Meng-meng Li, Zhen-wei Li

Proceedings Volume 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016; 1014107 (2016) https://doi.org/10.1117/12.2255086
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held July 2016, 2016, Changchun, China

Abstract

A static pointing model was built to correct the static pointing error. The horizontal coordinate system and sighting coordinate system were constructed based on the architecture of level mounting telescope. Then derivate the conversion formula while converting the ALT-ALT coordinate system to horizontal coordinate system and got the rotated matrix which elements contain the value of the encoder and the pointing errors of the level mounting telescope when rotated horizontal coordinate system to target coordinate system also called sighting coordinate system. Obtained the static pointing model after a series of calculations,. Using the data that observed by 40 cm level mounting telescope to fitting model, and results show that improve the static pointing accuracy from 196.64′′to 4.76′′, which compared to basic parameters model and spherical model, found that the static pointing model is the best one. As well it’s enough to content the requirement that has risen.

Citation Download Citation

Cheng-zhi Liu, Meng-meng Li, and Zhen-wei Li "Modeling and correction of static pointing error of level mounting telescope", Proc. SPIE 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016, 1014107 (7 November 2016); https://doi.org/10.1117/12.2255086

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