ELT上的HARMONI：低阶波前子系统拾取臂工程模型（LPOA-EM）现状的设计与测试
HARMONI at ELT: Design & Test on the current status of Low Order Wavefront Subsystem Pick Off Arm Engineering Model (LPOA-EM)
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中文总结 AI 辅助
介绍了用于ELT的HARMONI中低阶波前传感器子系统LOWFS，经重新规划后可同时操作三个拾取臂。展示了对其工程模型两个旋转关节的表征活动初步结果，涵盖角分辨率等多项测量。
中文摘要 AI 辅助
HARMONI是用于ELT的首光、自适应光学辅助近红外积分场光谱仪，覆盖800至2450nm，分辨率为3000至7000。低阶波前传感器子系统（LOWFS）通过测量仪器焦平面相对于望远镜波前传感器的运动来实现场稳定。在2025年重新规划后，LOWFS已更新为在共享空间内同时操作三个LOWFS拾取臂（LPOA）。我们展示了对两个旋转关节（肩部和肘部）的LPOA工程模型（EM）表征活动的初步结果，包括角分辨率测量、由独立计量验证的离散步长跟踪、旋转轴摆动以及轴承组件的径向和轴向跳动。
英文摘要
HARMONI is the first-light, adaptive-optics-assisted, near-infrared integral field spectrograph for the ELT, covering 800 to 2450 nm with resolving powers from 3000 to 7000. The Low Order Wavefront Sensor subsystem (LOWFS) provides field stabilisation by measuring the motion of the instrument focal plane relative to the telescope wavefront sensors. Following a rescope process in 2025, LOWFS has been updated to operate three LOWFS Pick-Off Arms (LPOA) simultaneously within a shared volume. We present first results from the LPOA Engineering Model (EM) characterisation campaign on two rotary joints, shoulder and elbow, including measurements of angular resolution, discrete step tracking validated by independent metrology, rotation axis wobble, and radial and axial runout of the bearing assembly.
