Focus anisoplanatism for 1.2 m telescope laser guide stars in adaptive optics system

zhou yu; xiong yao-heng

Volume 20 Issue 04

Apr. 2008

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Article Navigation > High Power Laser and Particle Beams > 2008 > 20(04): 0-

liu zhen-xiang, zhang jian-de, liu jin-liang, et al. Breakdown between adjacent turns and output waveform of helix pulse forming line[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

zhou yu, xiong yao-heng. Focus anisoplanatism for 1.2 m telescope laser guide stars in adaptive optics system[J]. High Power Laser and Particle Beams, 2008, 20.

liu zhen-xiang, zhang jian-de, liu jin-liang, et al. Breakdown between adjacent turns and output waveform of helix pulse forming line[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

zhou yu, xiong yao-heng. Focus anisoplanatism for 1.2 m telescope laser guide stars in adaptive optics system[J]. High Power Laser and Particle Beams, 2008, 20.

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Focus anisoplanatism for 1.2 m telescope laser guide stars in adaptive optics system

zhou yu¹,
xiong yao-heng²

1.
National Astronomical Observatories/Yunnan Observatory,Chinese Academy of Sciences,Kunming 650011,China

Publish Date: 2008-04-15

Abstract

Abstract

A precise simulation the focus anisoplanatism error of Yunnan observatory 1.2 m 61-element laser guide star adaptive optics system, which caused by laser beacon at a finite range travels a different path than does the light from natural star at a infinite range. This error can be eliminated by use of laser guide stars. However, there are two sources of error limit multiple beacon adaptive optical system, beacon position measurement error and conic tilt error. Analysis the two errors when project two to five laser guide stars. The result showed that with the increase of high and number of laser beam, especially the focus anisoplanatism of Na laser guide stars could reduced to 1 rad2.
- focus anisoplanatism,
- multiple laser guide stars,
- beacon wander error,
- conic tilt error

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