Using confidence intervals to evaluate the focus alignment of spectrograph detector arrays

Dataset containing images taken to align a spectrograph sensor in the best-focus position. All computer code is included to compute the best-focus position in addition to determining confidence intervals to the solution. These confidence intervals provide a statistical measure of the variance, characterizing the precision.<br>An example of use document is also included in the form of an IPython notebook (also in .html format) to provide a brief background to the approach as well as a step-by-step guide to using the code.本数据集包含用于将光谱仪传感器（spectrograph sensor）调整至最佳对焦位置的拍摄图像。数据集附带全部用于计算最佳对焦位置，并确定该求解结果的置信区间的计算机代码。此类置信区间可提供方差的统计量度，用以表征求解结果的精度。 还附带了以IPython Notebook（同时提供.html格式）形式呈现的使用示例文档，用于简要介绍该方法的背景知识，并提供代码使用的分步指南。