The Off-plane Grating Rocket Experiment (OGRE) is a soft x-ray grating spectrometer to be flown on a suborbital rocket. The payload is designed to obtain the highest-resolution soft x-ray spectrum of Capella to date with a resolution goal of R ( λ / Δλ ) > 2000 at select wavelengths in its 10 to 55 Å bandpass of interest. The optical design of the spectrometer realizes a theoretical maximum resolution of R ≈ 5000, but this performance does not consider the finite performance of the individual spectrometer components, misalignments between components, and in-flight pointing errors. These errors all degrade the performance of the spectrometer from its theoretical maximum. A comprehensive line-spread function (LSF) error budget has been constructed for the OGRE spectrometer to identify contributions to the LSF, to determine how each of these affects the LSF, and to inform performance requirements and alignment tolerances for the spectrometer. In this document, the comprehensive LSF error budget for the OGRE spectrometer is presented, the resulting errors are validated via raytrace simulations, the implications of these results are discussed, and future work is identified.

中文翻译：

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平面光栅火箭实验的综合线扩展函数误差预算

平面光栅火箭实验（OGRE）是一种软X射线光栅光谱仪，可在亚轨道火箭上飞行。有效载荷旨在获得迄今为止Capella的最高分辨率软X射线光谱，其目标10至55Å带通波长下的选定波长的分辨率目标为R（λ/Δλ）> 2000。光谱仪的光学设计实现了R≈5000的理论最大分辨率，但此性能未考虑单个光谱仪组件的有限性能，组件之间的未对准以及飞行中的指向误差。这些误差都会使光谱仪的性能从理论最大值下降。已为OGRE光谱仪建立了全面的线扩展函数（LSF）误差预算，以识别对LSF的贡献，确定这些因素如何影响LSF，并告知性能要求和光谱仪的对准公差。在本文档中，介绍了OGRE光谱仪的全面LSF误差预算，通过射线跟踪仿真验证了产生的误差，讨论了这些结果的含义，并确定了未来的工作。