{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2IWIYFHMMX652OJIQ7WK3CCUTA","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":"675500482505531510c823ef787890e7a77d998dbb1b2d7e8ea3149a554c1730","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-02-28T10:21:26Z","title_canon_sha256":"47ec635555a8e11b7e31e2d0f984b19863fcaac800471688d233d4f8b18623ee"},"schema_version":"1.0","source":{"id":"1302.7139","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.7139","created_at":"2026-05-18T01:51:26Z"},{"alias_kind":"arxiv_version","alias_value":"1302.7139v1","created_at":"2026-05-18T01:51:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.7139","created_at":"2026-05-18T01:51:26Z"},{"alias_kind":"pith_short_12","alias_value":"2IWIYFHMMX65","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2IWIYFHMMX652OJI","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2IWIYFHM","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:340bb995f423b620b59e6f120d659c30691f401289eda1b0bed247ef18d9c946","target":"graph","created_at":"2026-05-18T01:51:26Z","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 Sydney University Stellar Interferometer (SUSI) has two beam combiners, i.e. the Precision Astronomical Visible Observations (PAVO) and the Microarcsecond University of Sydney Companion Astrometry (MUSCA). The primary beam combiner, PAVO, can be operated independently and is typically used to measure properties of binary stars of less than 50 milliarc- sec (mas) separation and the angular diameters of single stars. On the other hand, MUSCA was recently installed and must be used in tandem with the for- mer. It is dedicated for microarcsecond precision narrow-angle astrometry of close binar","authors_text":"J Gordon Robertson, Michael J Ireland, Peter G Tuthill, Vicente Maestro, Yitping Kok","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-02-28T10:21:26Z","title":"Simulating a dual beam combiner at SUSI for narrow-angle astrometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.7139","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":"sha256:275fa787153f2f5f4ff817ef4bc6c55d8b5d655fe0ede93d8682d271896eb85a","target":"record","created_at":"2026-05-18T01:51:26Z","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":"675500482505531510c823ef787890e7a77d998dbb1b2d7e8ea3149a554c1730","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-02-28T10:21:26Z","title_canon_sha256":"47ec635555a8e11b7e31e2d0f984b19863fcaac800471688d233d4f8b18623ee"},"schema_version":"1.0","source":{"id":"1302.7139","kind":"arxiv","version":1}},"canonical_sha256":"d22c8c14ec65fddd392887ecad8854983aed75d5d71bc28301600a7aba25e69f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d22c8c14ec65fddd392887ecad8854983aed75d5d71bc28301600a7aba25e69f","first_computed_at":"2026-05-18T01:51:26.168297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:26.168297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NrIeLg2TNgZ/JJregr184FBhCxAd9faljbkpW59cSV97IDPexU/59beDd1G/zwxp4LUz8aRwj1k7w0VrrxrZCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:26.169046Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.7139","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:275fa787153f2f5f4ff817ef4bc6c55d8b5d655fe0ede93d8682d271896eb85a","sha256:340bb995f423b620b59e6f120d659c30691f401289eda1b0bed247ef18d9c946"],"state_sha256":"db53ee1cce6748e466a648dd97d712338728f36d612525b066497e96ff0f0ae6"}