{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:Q4BROX3S64327SFWN7F4O3WUQH","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":"3179a939e62bd6406717ca2cfb23ca1a1bbe24d8000b4d32360869e15fe92b68","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-09T00:01:53Z","title_canon_sha256":"6a80f3f3b53b246136fc12be8c744a5320595ecab094a307cac29b4723336bca"},"schema_version":"1.0","source":{"id":"1407.2304","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2304","created_at":"2026-05-18T01:42:40Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2304v1","created_at":"2026-05-18T01:42:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2304","created_at":"2026-05-18T01:42:40Z"},{"alias_kind":"pith_short_12","alias_value":"Q4BROX3S6432","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"Q4BROX3S64327SFW","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"Q4BROX3S","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:328cd1e8e70f879f4f0213d00d5f686d3d4083c935e1b2c186fd768ce876c620","target":"graph","created_at":"2026-05-18T01:42:40Z","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":"We present the wavelength calibration for the lenslet-based Integral Field Spectrograph (IFS) that serves as the science instrument for the Gemini Planet Imager (GPI). The GPI IFS features a 2.7\" x 2.7\" field of view and a 190 x 190 lenslet array (14.3 mas/lenslet) operating in $Y$, $J$, $H$, and $K$ bands with spectral resolving power ranging from $R$ $\\sim$ 35 to 78. Due to variations across the field of view, a unique wavelength solution is determined for each lenslet characterized by a two-dimensional position, the spectral dispersion, and the rotation of the spectrum with respect to the d","authors_text":"Fredrik T. Rantakyr\\\"o, J\\'er\\^ome Maire, Marshall D. Perrin, Pascale Hibon, Patrick J. Ingraham, Schuyler G. Wolff, with the GPI team","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-09T00:01:53Z","title":"Gemini Planet Imager Observational Calibrations IV: Wavelength Calibration and Flexure Correction for the Integral Field Spectrograph"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2304","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":"sha256:0a160b6c68006c06a36ca6b1f50fc91664c0223f6ce6862e07ea946d4e265b91","target":"record","created_at":"2026-05-18T01:42:40Z","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":"3179a939e62bd6406717ca2cfb23ca1a1bbe24d8000b4d32360869e15fe92b68","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-09T00:01:53Z","title_canon_sha256":"6a80f3f3b53b246136fc12be8c744a5320595ecab094a307cac29b4723336bca"},"schema_version":"1.0","source":{"id":"1407.2304","kind":"arxiv","version":1}},"canonical_sha256":"8703175f72f737afc8b66fcbc76ed481ca8a67896e96b5d5bfb85f10551c64a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8703175f72f737afc8b66fcbc76ed481ca8a67896e96b5d5bfb85f10551c64a6","first_computed_at":"2026-05-18T01:42:40.554847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:40.554847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9XQgGx3x9/J9RY69A0lafCP55f71g9gQyJPrEBn8MCs9/Ma97t7Z3p39P6Y9EuJRNjlVndr80DyvH8Fu8VAFBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:40.555334Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.2304","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a160b6c68006c06a36ca6b1f50fc91664c0223f6ce6862e07ea946d4e265b91","sha256:328cd1e8e70f879f4f0213d00d5f686d3d4083c935e1b2c186fd768ce876c620"],"state_sha256":"f6dbaef6ca6182300499b1c2770d2f225a2c1cfc16c1d28b2f350583bbcbe0b0"}