Current status of the laser guide star adaptive optics system for Subaru Telescope
Current status of the laser guide star adaptive optics system for Subaru Telescope
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DOI：
10.1117/12.789992
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发表时间：
2008-07
影响因子：
2.8
通讯作者：
Y. Hayano;H. Takami;O. Guyon;S. Oya;M. Hattori;Y. Saito;Makoto Watanabe;N. Murakami;Y. Minowa;Meguru Ito;S. Colley;M. Eldred;T. Golota;Matthew C. Dinkins;N. Kashikawa;M. Iye
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文献类型：
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作者：
Y. Hayano;H. Takami;O. Guyon;S. Oya;M. Hattori;Y. Saito;Makoto Watanabe;N. Murakami;Y. Minowa;Meguru Ito;S. Colley;M. Eldred;T. Golota;Matthew C. Dinkins;N. Kashikawa;M. Iye
介绍了自2006年奥兰多SPIE会议以来，斯巴鲁望远镜激光导引星星自适应光学系统的研究现状和最新成果。2006年10月，我们首次利用天然导星星发光，并成功发射了钠激光束。在K波段，10等星星的Strehl比约为0.5。我们证实，即使在0.9微米波长下，恒星点扩散函数的半高宽也小于0.1弧秒。用波长为589 nm的激光束所产生的人造引导星星的大小估计为10角秒。得到的模糊人工引导星星是由激光发射望远镜上的波前误差引起的。在第一盏灯和第一次发射之后，我们发现我们需要修改和修复组件，这些组件暂时完成。此外，在第一次光照后推迟制造的组件也需要重新建造。自然导星星自适应光学系统所使用的所有组件最近都完成了，我们已经准备好上天空。下一次工程观测定于2008年8月进行。
The current status and recent results, since last SPIE conference at Orlando in 2006, for the laser guide star adaptive optics system for Subaru Telescope is presented. We had a first light using natural guide star and succeed to launch the sodium laser beam in October 2006. The achieved Strehl ratio on the 10th magnitude star was around 0.5 at K band. We confirmed that the full-width-half-maximum of the stellar point spread function is smaller than 0.1 arcsec even at the 0.9 micrometer wavelehgth. The size of the artificial guide star by the laser beam tuned at the wavelength of 589 nm was estimated to be 10 arcsec. The obtained blurred artificial guide star is caused by the wavefront error on the laser launching telescope. After the first light and first launch, we found that we need to modify and to fix the components, which are temporarily finished. Also components, which were postponed to fabricate after the first light, are required to build newly. All components used by the natural guide star adaptive optics system are finalized recently and we are ready to go on the sky. Next engineering observation is scheduled in August, 2008.