论文标题

部分可观测时空混沌系统的无模型预测

AO3000 at Subaru: Combining for the first time a NIR WFS using First Light's C-RED ONE and ALPAO's 64x64 DM

论文作者

Lozi, Julien, Ahn, Kyohoon, Clergeon, Christophe, Deo, Vincent, Guyon, Olivier, Hattori, Takashi, Minowa, Yosuke, Nishiyama, Shogo, Ono, Yoshito, Vievard, Sebastien

论文摘要

经过16年的天上运营,Subaru望远镜的设施自适应光学元件AO188已获得多次重大升级,以成为极端的AO3000(与之前的188名相比,学生中有3000名练习者)。 AO3000将为从可见的到中红外(尤其是红外摄像头和光谱仪(IRC)以及Subaru Coronagraphic Extreme Adaptive Optics(SCEXAO)提供几种仪器的高速图像。对于此升级,原始的188个元素可变形镜(DM)将被Alpao的$ 64 \ times64 $ dm代替。可见的波前传感器也将在以后升级,但是与此同时,我们使用双屋顶Prism金字塔模式或焦点平面WFS模式,添加了近红外的波前传感器(NIR WFS)。这个新的Wavefront传感器将首次使用First Light的C-RED One摄像头,从而完全控制$ 64 \ times64 $ dm,最高可达1.6 kHz。挑战之一是使用非破坏性读数和带有调制金字塔的滚动快门。对于Scexao而言,此升级将特别令人兴奋,因为极端的环路将更多地集中在创建高对比度的黑暗区域,而不是纠正大气中的大气残差。这将是第一次将两个极端循环组合在同一望远镜上。最后,设置AO3000+SCEXAO+IRCS将成为30米望远镜的行星系统成像器(TMT-PSI)的完美演示器。我们将在这里展示AO3000的设计,集成和测试,并展示第一个天上的结果。

After 16 years of on-sky operation, Subaru Telescope's facility adaptive optics AO188 is getting several major upgrades to become the extreme-AO AO3000 (3000 actuators in the pupil compared to 188 previously). AO3000 will provide high-Strehl images for several instruments from visible to mid-infrared, notably the Infrared Camera and Spectrograph (IRCS), and the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO). For this upgrade, the original 188-element deformable mirror (DM) will be replaced with ALPAO's $64\times64$ DM. The visible wavefront sensor will also be upgraded at a later date, but in the meantime we are adding a near-infrared Wavefront Sensor (NIR WFS), using either a double roof prism pyramid mode or a focal plane WFS mode. This new wavefront sensor will use for the first time First Light's C-RED ONE camera, allowing for a full control of the $64\times64$ DM at up to 1.6 kHz. One of the challenges is the use of non-destructive reads and a rolling shutter with the modulated pyramid. This upgrade will be particularly exciting for SCExAO, since the extreme-AO loop will focus more on creating high-contrast dark zones instead of correcting large atmospheric residuals. It will be the first time two extreme-AO loops will be combined on the same telescope. Finally, the setup AO3000+SCExAO+IRCS will serve as a perfect demonstrator for the Thirty Meter Telescope's Planetary Systems Imager (TMT-PSI). We will present here the design, integration and testing of AO3000, and show the first on-sky results.

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