论文标题
Magao-X的高级波前传感和控制演示
Advanced wavefront sensing and control demonstration with MagAO-X
论文作者
论文摘要
对系外行星的搜索是将基于地面望远镜的自适应光学系统推向其极限。当前，我们受到两个噪声来源的限制：时间控制误差和非通用路径畸变。首先，AO系统的时间控制误差会导致强大的残留光环。可以通过应用预测控制来减少该光晕。我们将在Magao-X中使用2K BMC DM显示并描述预测控制的性能。减少时间控制误差后，我们可以靶向非通用路径波前畸变。在过去的一年中，我们开发了一种新的无模型平面波前控制技术，该技术可以在magao-X上达到深层对比度（<1e-7，在5 $λ$/d时）。我们将描述性能，并讨论对天空实现的细节，以及如何将Magao-X推向反射光的成像行星。新的数据驱动的预测控制器和焦平面波浪控制器将于2022年4月在Sky上进行测试。
The search for exoplanets is pushing adaptive optics systems on ground-based telescopes to their limits. Currently, we are limited by two sources of noise: the temporal control error and non-common path aberrations. First, the temporal control error of the AO system leads to a strong residual halo. This halo can be reduced by applying predictive control. We will show and described the performance of predictive control with the 2K BMC DM in MagAO-X. After reducing the temporal control error, we can target non-common path wavefront aberrations. During the past year, we have developed a new model-free focal-plane wavefront control technique that can reach deep contrast (<1e-7 at 5 $λ$/D) on MagAO-X. We will describe the performance and discuss the on-sky implementation details and how this will push MagAO-X towards imaging planets in reflected light. The new data-driven predictive controller and the focal plane wavefront controller will be tested on-sky in April 2022.
