论文标题
金字塔波前传感器的EMCCD：实验室表征
EMCCD for Pyramid wavefront sensor: laboratory characterization
论文作者
论文摘要
电动CCD提供了速度，亚电子噪声和量子效率的独特组合。这些功能使它们对天文自适应光学器件极为吸引力。灵魂项目从FLI选择了OCAM2K作为LBT SCAO系统的金字塔波前传感器的相机升级。在这里，我们介绍了Soul Project的定制OCAM2K摄像机3的实验室表征的结果。相机显示出非常好的噪音（$ 0.4E^ - $和$ 0.4-0.7e^ - binned模式）和暗电流值（$ 1.5E^ - $）。我们测量了相机增益，并确定了对功率周期和帧速率的依赖性。最后，我们估计了这些增益变化对灵魂自适应光学系统的影响。对灵魂表现的影响可以忽略不计。
Electro-Multiplying CCDs offer a unique combination of speed, sub-electron noise and quantum efficiency. These features make them extremely attractive for astronomical adaptive optics. The SOUL project selected the Ocam2k from FLI as camera upgrade for the pyramid wavefront sensor of the LBT SCAO systems. Here we present results from the laboratory characterization of the 3 of the custom Ocam2k cameras for the SOUL project. The cameras showed very good noise ($0.4e^-$ and $0.4-0.7e^-$ for binned modes) and dark current values ($1.5e^-$). We measured the camera gain and identified the dependency on power cycle and frame rate. Finally, we estimated the impact of these gain variation in the SOUL adaptive optics system. The impact on the SOUL performance resulted to be negligible.
