{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7RKMJQLZHLISQ6CKOOXQS7QJMD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4da5ea00bd8800731f8977119eb65567486b83dbb50274e40c301f9128b44155","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-14T20:00:06Z","title_canon_sha256":"8247d818479d394bab4c1e1c074981686b86ef4bc1652af1b6a448cedc750e50"},"schema_version":"1.0","source":{"id":"1609.04410","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.04410","created_at":"2026-05-18T01:04:36Z"},{"alias_kind":"arxiv_version","alias_value":"1609.04410v1","created_at":"2026-05-18T01:04:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.04410","created_at":"2026-05-18T01:04:36Z"},{"alias_kind":"pith_short_12","alias_value":"7RKMJQLZHLIS","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7RKMJQLZHLISQ6CK","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7RKMJQLZ","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:52a2a8a9171488451451cc912710fbd42907d0ba044b0db0141966724046dfe5","target":"graph","created_at":"2026-05-18T01:04:36Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The demonstration of efficient single-mode fiber (SMF) coupling is a key requirement for the development of a compact, ultra-precise radial velocity (RV) spectrograph. iLocater is a next generation instrument for the Large Binocular Telescope (LBT) that uses adaptive optics (AO) to inject starlight into a SMF. In preparation for commissioning iLocater, a prototype SMF injection system was installed and tested at the LBT in the Y-band (0.970-1.065 $\\mu$m). This system was designed to verify the capability of the LBT AO system as well as characterize on-sky SMF coupling efficiencies. SMF couplin","authors_text":"Andrew Bechter, Charles E. Woodward, Eleanya Onuma, Elliott Runburg, Eric Bechter, Fernando Pedichini, Giuseppina Micela, Isabella Pagano, Jonathan Crass, Justin R. Crepp, Michael Foley, Philip Hinz, Robert O. Reynolds, Ryan Ketterer, Scott Gaudi","cross_cats":["astro-ph.EP","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-14T20:00:06Z","title":"On-sky single-mode fiber coupling measurements at the Large Binocular Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.04410","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:4da9703875dcd4236f2bbb1ae37a8c23d799eed63174e4405c651d2941db483a","target":"record","created_at":"2026-05-18T01:04:36Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4da5ea00bd8800731f8977119eb65567486b83dbb50274e40c301f9128b44155","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-14T20:00:06Z","title_canon_sha256":"8247d818479d394bab4c1e1c074981686b86ef4bc1652af1b6a448cedc750e50"},"schema_version":"1.0","source":{"id":"1609.04410","kind":"arxiv","version":1}},"canonical_sha256":"fc54c4c1793ad128784a73af097e0960cfd52a87464d3f94fedbed97f5939576","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc54c4c1793ad128784a73af097e0960cfd52a87464d3f94fedbed97f5939576","first_computed_at":"2026-05-18T01:04:36.854003Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:36.854003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z+DXhJSJ/etn+xNmeJVp1XkOeLCLKzzkv75WWe2TOPE2hGhtb1i7DPSXyq+qHn0EgrW2KstbWJSiIq3RrU+rBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:36.854722Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.04410","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4da9703875dcd4236f2bbb1ae37a8c23d799eed63174e4405c651d2941db483a","sha256:52a2a8a9171488451451cc912710fbd42907d0ba044b0db0141966724046dfe5"],"state_sha256":"66ef16407bd5003f15e541ff78d2ced08223eb7ad568e28f2cdda25ef0ef2c32"}