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An updated overview of the off-plane grating rocket experiment (OGRE) and its pathfinder mission (OGRE-P)
Conference proceeding

An updated overview of the off-plane grating rocket experiment (OGRE) and its pathfinder mission (OGRE-P)

Alexandra Higley, Randall McEntaffer, James Tutt, Bridget O'Meara, Jake McCoy, Ross McCurdy, Jeffrey De Lucca, Tristen Sextro, Aditi Gangadharan, Nolan McPhaul, …
Proceedings of SPIE, the international society for optical engineering, Vol.14146, pp.141463F-141463F-14
08/17/2026
DOI: 10.1117/12.3103826

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Abstract

The Off-plane Grating Rocket Experiment (OGRE) is a sounding rocket mission that is designed to demonstrate high-performance next-generation x-ray technology for soft x-ray spectroscopy ( 0.3 - 2.0 keV). The nominal payload features a three-component spectrometer consisting of a modern x-ray mirror assembly in the Wolter I prescription, modules of blazed reflection gratings with radial groove profiles, and an array of electron-multiplying CCDs (EM-CCDs). While in flight, OGRE aims to obtain the highest resolution soft x-ray spectrum of Capella to date. As lightweight, high angular resolution x-ray mirror technology continues to develop, the OGRE team will launch a pathfinder mission that uses a completed, existing mirror assembly, JET-X, in preparation for the nominal flight. This preliminary flight, designated as Pathfinder OGRE (OGRE-P), will test the x-ray reflection gratings for high-resolution spectroscopy and provide critical information on the in-flight operation of OGRE payload systems. We report on the current status of the OGRE-P payload, including its design, alignment strategy, assembly, and characterization.

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