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First Sodium Laser Guide Star Asterism Launching Platform in China on the 1.8m Telescope at Gaomeigu Observatory
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First Sodium Laser Guide Star Asterism Launching Platform in China on the 1.8m Telescope at Gaomeigu Observatory
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Journal Article
First Sodium Laser Guide Star Asterism Launching Platform in China on the 1.8m Telescope at Gaomeigu Observatory
2023
Overview
The application of a sodium laser guide star is the key difference between a modern adaptive optics system and traditional adaptive optics system. Especially in system such as multiconjugate adaptive optics, a sodium laser guide star asterism that is formed by several laser guide stars in a certain pattern is required to probe more atmospheric turbulence in different directions. To achieve this, a sodium laser guide star asterism launching platform is required. In this paper, we introduce the sodium laser guide star asterism launching platform built and tested on the 1.8 m telescope of Gaomeigu Observatory. The platform has two functions: one function is to compare the performance of sodium laser guide stars generated by different lasers at the same place, and the other function is to generate a sodium laser guide star asterism with an adjustable shape. The field test results at the beginning of 2021 verified the important role of the platform, which is also the first time that a sodium laser guide star asterism was realized in China.
Publisher
IOP Publishing Limited
