{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:4LGUFLSYJGI5N2POG3GWZQQ2TB","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":"c8ecf0dc33b237d06b80a3b814f6341923f1ddc68ccd7ff2b8863c818c9e2cf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-06-25T06:31:58Z","title_canon_sha256":"051e2f1c379eb161aec151641a1e669efeef2e642d72051c5036c94811db8906"},"schema_version":"1.0","source":{"id":"2306.14144","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.14144","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"2306.14144v1","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.14144","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"4LGUFLSYJGI5","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_16","alias_value":"4LGUFLSYJGI5N2PO","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_8","alias_value":"4LGUFLSY","created_at":"2026-07-05T06:24:20Z"}],"graph_snapshots":[{"event_id":"sha256:629ce9f8f65d935fbc0701862d78118e392cc7c99c26a7cedcfc1aeba41c54b9","target":"graph","created_at":"2026-07-05T06:24:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2306.14144/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Co-phase and co-focus detection is one of the key technologies for large-aperture segmented mirror telescopes. In this paper, a new edge sensor based on fringes of equal thickness is developed, which can detect each segment's relative piston, tilt, and tip errors from the interferograms. Based on the co-focus demand for many ground-based seeing limited segmented mirror telescopes, an edge sensor prototype based on such a principle is built and applied in the indoor segmented mirror experiment system in the lab. According to the co-focus requirement of the Large Sky Area Multi-Object Fiber Spec","authors_text":"Heng Zuo, Xi Zhang, Ye-Ping Li, Yong Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-06-25T06:31:58Z","title":"The Edge Sensor of Segmented Mirror Based on Fringes of Equal Thickness"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.14144","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":"sha256:130577833a0eaaa018d5fb58ed88cbfa6a66eaa47bb4525db2e62a73502dbe40","target":"record","created_at":"2026-07-05T06:24:20Z","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":"c8ecf0dc33b237d06b80a3b814f6341923f1ddc68ccd7ff2b8863c818c9e2cf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-06-25T06:31:58Z","title_canon_sha256":"051e2f1c379eb161aec151641a1e669efeef2e642d72051c5036c94811db8906"},"schema_version":"1.0","source":{"id":"2306.14144","kind":"arxiv","version":1}},"canonical_sha256":"e2cd42ae584991d6e9ee36cd6cc21a984eb2603cab2564dcb65fb5c62e780603","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e2cd42ae584991d6e9ee36cd6cc21a984eb2603cab2564dcb65fb5c62e780603","first_computed_at":"2026-07-05T06:24:20.831641Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:24:20.831641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eyMaHUmxL6sT+m8jqVB3Bp5+GQlN2TE0QBykNiyJ+A7XwIRqRL85vtWN0DDPv5+ZFdCKvO+vh5N/cxjSUdQ0Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:24:20.831977Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.14144","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:130577833a0eaaa018d5fb58ed88cbfa6a66eaa47bb4525db2e62a73502dbe40","sha256:629ce9f8f65d935fbc0701862d78118e392cc7c99c26a7cedcfc1aeba41c54b9"],"state_sha256":"42dc2a8b1639d4cd9433c0ace6f354fb37f57f14467c05e1c49c0f7f64dcc12d"}