{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TXLYM5LGPXEJPDSQ5OOQVPNOEC","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":"8bb92b0104fa5fbce1fb098ded55abff47bca7aad316e919db275b5a6851aec2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-07-23T21:13:57Z","title_canon_sha256":"1e9f0c248a9a4045d889275f92ebc0c9f8a33bb7c3ddce5126d1fd8a82c807b2"},"schema_version":"1.0","source":{"id":"1807.08832","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.08832","created_at":"2026-05-18T00:09:57Z"},{"alias_kind":"arxiv_version","alias_value":"1807.08832v1","created_at":"2026-05-18T00:09:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.08832","created_at":"2026-05-18T00:09:57Z"},{"alias_kind":"pith_short_12","alias_value":"TXLYM5LGPXEJ","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TXLYM5LGPXEJPDSQ","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TXLYM5LG","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:66c81f47d98b4cb7ddb0b2ec14f557d303035af9e1d3121249506e8b4836a34c","target":"graph","created_at":"2026-05-18T00:09:57Z","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":"Ground-layer adaptive optics (GLAO) systems offer the possibility of improving the \"seeing\" of large ground-based telescopes and increasing the efficiency and sensitivity of observations over a wide field-of-view. We explore the utility and feasibility of deploying a GLAO system at the W. M. Keck Observatory in order to feed existing and future multi-object spectrographs and wide-field imagers. We also briefly summarize science cases spanning exoplanets to high-redshift galaxy evolution that would benefit from a Keck GLAO system. Initial simulations indicate that a Keck GLAO system would deliv","authors_text":"C. L. Martin, C. Max, C. Steidel, D. Gavel, J. R. Lu, K. Bundy, K. Westfall, L. Wang, M. Chun, M. Kassis, O. Lai, P. Wizinowich, R. Dekany, S. M. Ammons, T. Do","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-07-23T21:13:57Z","title":"Ground Layer Adaptive Optics for the W. M. Keck Observatory: Feasibility Study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.08832","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":"sha256:93f69202bf66f99774b47780f430097276ac87458ff7985d6ad4197451fc3e4a","target":"record","created_at":"2026-05-18T00:09:57Z","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":"8bb92b0104fa5fbce1fb098ded55abff47bca7aad316e919db275b5a6851aec2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-07-23T21:13:57Z","title_canon_sha256":"1e9f0c248a9a4045d889275f92ebc0c9f8a33bb7c3ddce5126d1fd8a82c807b2"},"schema_version":"1.0","source":{"id":"1807.08832","kind":"arxiv","version":1}},"canonical_sha256":"9dd78675667dc8978e50eb9d0abdae20af6babf723599c03d965f5fe9850f327","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9dd78675667dc8978e50eb9d0abdae20af6babf723599c03d965f5fe9850f327","first_computed_at":"2026-05-18T00:09:57.691436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:57.691436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YnPbCDA3GzbbqCs4TUru4zIQSdYagboxggeS69lFU1Bjnt2eXJrXziE+lcirDsrNIeG5qtBH/hjO2aMQ6OmIDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:57.692264Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.08832","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93f69202bf66f99774b47780f430097276ac87458ff7985d6ad4197451fc3e4a","sha256:66c81f47d98b4cb7ddb0b2ec14f557d303035af9e1d3121249506e8b4836a34c"],"state_sha256":"c88a1a71da4041f6bc2176c21d7ecd604beb9dbbd73e82773221724f5e84fd4a"}