{"paper":{"title":"Datacubes of H$\\alpha$, CaII K, CaII H and H$\\epsilon$ line profiles of the full solar disk recorded daily at Meudon observatory since 2017 and some typical profiles of solar features","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Jean-Marie Malherbe (LIRA, PSL)","submitted_at":"2026-05-18T14:51:58Z","abstract_excerpt":"Systematic observations of the Sun are performed at Meudon observatory since 1908 under the form of monochromatic images. However, a major technical improvement occurred in 2017; since this date, spectroscopic datacubes are obtained daily with the spectroheliograph and a fast CCD camera. Line profiles of H$\\alpha$ (6562.8 A), CaII K (3933.7 A), CaII H (3968.5 A) and H$\\epsilon$ (3970.1 A in the wing of CaII H) are recorded over the full solar disk under the form of 3D FITS files (x, y, $\\lambda$). The optical spectral resolution is 0.15 A for Calcium and H$\\epsilon$ (0.093 A/pixel), and 0.25 A"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.18499","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.18499/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"}