SCExAO: First Results and On-Sky Performance
SCExAO: First Results and On-Sky Performance
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DOI：
10.1017/s1743921313007746
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
T. Currie;O. Guyon;F. Martinache;C. Clergeon;M. McElwain;C. Thalmann;N. Jovanovic;Garima Singh;T. Kudo
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文献类型：
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作者：
T. Currie;O. Guyon;F. Martinache;C. Clergeon;M. McElwain;C. Thalmann;N. Jovanovic;Garima Singh;T. Kudo
摘要：我们提出了新的斯巴鲁Coronagraphic极端自适应光学成像仪（SCExAO）的天空结果，验证和量化的对比度增益，使关键部件：闭环coronagraphic低阶波前传感器（CLOWFS）和焦平面波前控制（“斑点归零”）。SCExAO将很快与一个高阶金字塔波前传感器相结合，该传感器将产生> 90%的Strehl比，并在小角度分离时实现106-107的对比度，使我们能够在太阳系尺度上对气体巨行星进行成像。即将到来的仪器，如VAMPIRES，FIRST和CHARIS将扩大SCExAO的科学能力。
Abstract We present new on-sky results for the Subaru Coronagraphic Extreme Adaptive Optics imager (SCExAO) verifying and quantifying the contrast gain enabled by key components: the closed-loop coronagraphic low-order wavefront sensor (CLOWFS) and focal plane wavefront control (“speckle nulling”). SCExAO will soon be coupled with a high-order, Pyramid wavefront sensor which will yield > 90% Strehl ratio and enable 106–107 contrast at small angular separations allowing us to image gas giant planets at solar system scales. Upcoming instruments like VAMPIRES, FIRST, and CHARIS will expand SCExAO's science capabilities.