2021/01/05 by Benjamin D. Donovan, Randall L. McEntaffer, Donovan, Benjamin D. +29
Engineering · Physics and Astronomy · #Advanced X-ray Imaging Techniques #Calibration and Measurement Techniques #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.2101.01749
openalex publication_date 2021/01/05 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
The Off-plane Grating Rocket Experiment (OGRE) is a soft X-ray grating\nspectrometer to be flown on a suborbital rocket. The payload is designed to\nobtain the highest-resolution soft X-ray spectrum of Capella to date with a\nresolution goal of R(\λ/\Δ\λ)>2000 at select wavelengths in its\n10--55 Angstrom bandpass of interest. The optical design of the spectrometer\nrealizes a theoretical maximum resolution of R\≈5000, but this\nperformance does not consider the finite performance of the individual\nspectrometer components, misalignments between components, and in-flight\npointing errors. These errors all degrade the performance of the spectrometer\nfrom its theoretical maximum. A comprehensive line-spread function (LSF) error\nbudget has been constructed for the OGRE spectrometer to identify contributions\nto the LSF, to determine how each of these affects the LSF, and to inform\nperformance requirements and alignment tolerances for the spectrometer. In this\ndocument, the comprehensive LSF error budget for the OGRE spectrometer is\npresented, the resulting errors are validated via raytrace simulations, and the\nimplications of these results are discussed.\n