{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:H3XR4ILCTZBJ6KXQGEQPL3UB4B","short_pith_number":"pith:H3XR4ILC","schema_version":"1.0","canonical_sha256":"3eef1e21629e429f2af03120f5ee81e04db04fb4dbee9d4cad7bd92798ab0954","source":{"kind":"arxiv","id":"1707.01573","version":1},"attestation_state":"computed","paper":{"title":"LARS - An Absolute Reference Spectrograph for solar observations, Upgrade from a prototype to a turn-key system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"H.-P. Doerr, J. Loehner-Boettcher, R. A. Probst, R. Holzwarth, T. Kentischer, T. Steinmetz, W. Schmidt","submitted_at":"2017-07-05T20:35:56Z","abstract_excerpt":"LARS is an Absolute Reference Spectrograph designed for ultra-precise solar observations. The high-resolution echelle spectrograph of the Vacuum Tower Telescope is supported by a state-of-the-art laser frequency comb to calibrate the solar spectrum on an absolute wavelength scale. In this article, we describe the scientific instrument and focus on the upgrades in the last two years to turn the prototype into a turn-key system. The pursued goal was to improve the short-term and long-term stability of the systems, and enable a user-friendly and more versatile operation of the instrument. The fir"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1707.01573","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-05T20:35:56Z","cross_cats_sorted":[],"title_canon_sha256":"608d04d85a5624fb5385c3bd29b441a51e7efe3f98913be0eb94eb297b6f0d95","abstract_canon_sha256":"f8d72cff2d017b0fbf62ee686d29c834d9390ecff3f5be35b9a3989b671f7d7d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:40.581937Z","signature_b64":"08QbGrIJuidolb4DtS5GvYZonZ7/LwhVVJ4fglTWFozZCKjauorbxpk0209JxnFRBvJ1cuzD8RDSfSrBpq1+BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3eef1e21629e429f2af03120f5ee81e04db04fb4dbee9d4cad7bd92798ab0954","last_reissued_at":"2026-05-18T00:31:40.581511Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:40.581511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"LARS - An Absolute Reference Spectrograph for solar observations, Upgrade from a prototype to a turn-key system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"H.-P. Doerr, J. Loehner-Boettcher, R. A. Probst, R. Holzwarth, T. Kentischer, T. Steinmetz, W. Schmidt","submitted_at":"2017-07-05T20:35:56Z","abstract_excerpt":"LARS is an Absolute Reference Spectrograph designed for ultra-precise solar observations. The high-resolution echelle spectrograph of the Vacuum Tower Telescope is supported by a state-of-the-art laser frequency comb to calibrate the solar spectrum on an absolute wavelength scale. In this article, we describe the scientific instrument and focus on the upgrades in the last two years to turn the prototype into a turn-key system. The pursued goal was to improve the short-term and long-term stability of the systems, and enable a user-friendly and more versatile operation of the instrument. The fir"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.01573","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1707.01573","created_at":"2026-05-18T00:31:40.581588+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.01573v1","created_at":"2026-05-18T00:31:40.581588+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.01573","created_at":"2026-05-18T00:31:40.581588+00:00"},{"alias_kind":"pith_short_12","alias_value":"H3XR4ILCTZBJ","created_at":"2026-05-18T12:31:18.294218+00:00"},{"alias_kind":"pith_short_16","alias_value":"H3XR4ILCTZBJ6KXQ","created_at":"2026-05-18T12:31:18.294218+00:00"},{"alias_kind":"pith_short_8","alias_value":"H3XR4ILC","created_at":"2026-05-18T12:31:18.294218+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B","json":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B.json","graph_json":"https://pith.science/api/pith-number/H3XR4ILCTZBJ6KXQGEQPL3UB4B/graph.json","events_json":"https://pith.science/api/pith-number/H3XR4ILCTZBJ6KXQGEQPL3UB4B/events.json","paper":"https://pith.science/paper/H3XR4ILC"},"agent_actions":{"view_html":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B","download_json":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B.json","view_paper":"https://pith.science/paper/H3XR4ILC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.01573&json=true","fetch_graph":"https://pith.science/api/pith-number/H3XR4ILCTZBJ6KXQGEQPL3UB4B/graph.json","fetch_events":"https://pith.science/api/pith-number/H3XR4ILCTZBJ6KXQGEQPL3UB4B/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B/action/storage_attestation","attest_author":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B/action/author_attestation","sign_citation":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B/action/citation_signature","submit_replication":"https://pith.science/pith/H3XR4ILCTZBJ6KXQGEQPL3UB4B/action/replication_record"}},"created_at":"2026-05-18T00:31:40.581588+00:00","updated_at":"2026-05-18T00:31:40.581588+00:00"}