{"paper":{"title":"Solar Extreme Ultraviolet Spectrograph and High-energy Imager (SEUSHI): Design, Development, and Pre-Flight Calibration","license":"http://creativecommons.org/licenses/by/4.0/","headline":"SEUSHI combines multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera to deliver temperature and emission measure maps at 1 arcminute resolution every 5 seconds.","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alan Sims, Anant Telikicherla, Andrew R. Jones, Bennet D. Schwab, Dave Crotser, James P. Mason, Philip Chamberlin, Robert H. Sewell, Thomas N. Woods, Wyatt ZagorecMarks","submitted_at":"2026-04-08T19:18:52Z","abstract_excerpt":"Understanding the initiation of solar flares and coronal mass ejections (CMEs) is essential for improving forecasts of extreme space weather. Soft X-ray (SXR) and Extreme Ultraviolet (EUV) observations provide critical diagnostics of the highly dynamic solar corona; however, significant measurement gaps persist despite decades of observations. The Solar Extreme Ultraviolet Spectrograph and High-energy Imager (SEUSHI) aims to address these gaps by combining multi-pinhole SXR imaging with grazing-incidence EUV spectroscopy on a shared camera. SEUSHI delivers spatially-resolved temperature and em"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"SEUSHI delivers spatially-resolved temperature and emission measure maps at 1 arcminute resolution and 5 second cadence to identify Hot Onset Precursor Events (HOPEs), which provide early alerts of flares. Additionally, high-cadence (100 Hz) readouts enable photon-counting spectroscopy over 1.1-6.8 keV with approx. 0.08 keV energy resolution.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The combined multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera will achieve the stated resolutions, cadences, and energy resolution without significant interference or degradation in the space environment.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"SEUSHI is a compact instrument providing 1-arcmin temperature maps every 5 seconds and high-cadence EUV spectra to detect early flare precursors and study coronal heating.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"SEUSHI combines multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera to deliver temperature and emission measure maps at 1 arcminute resolution every 5 seconds.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"69f0041d1e98eabf3711ca0dd2272cbd7dbe696dcdaeb6691ed7e7fa6433c039"},"source":{"id":"2604.07537","kind":"arxiv","version":2},"verdict":{"id":"5125f3bb-6b75-4221-afcc-fa8d3ccc00df","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T17:14:32.113182Z","strongest_claim":"SEUSHI delivers spatially-resolved temperature and emission measure maps at 1 arcminute resolution and 5 second cadence to identify Hot Onset Precursor Events (HOPEs), which provide early alerts of flares. Additionally, high-cadence (100 Hz) readouts enable photon-counting spectroscopy over 1.1-6.8 keV with approx. 0.08 keV energy resolution.","one_line_summary":"SEUSHI is a compact instrument providing 1-arcmin temperature maps every 5 seconds and high-cadence EUV spectra to detect early flare precursors and study coronal heating.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The combined multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera will achieve the stated resolutions, cadences, and energy resolution without significant interference or degradation in the space environment.","pith_extraction_headline":"SEUSHI combines multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera to deliver temperature and emission measure maps at 1 arcminute resolution every 5 seconds."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.07537/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}