{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZAXYV3HRPLEQ33T4EMR32NGM4J","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":"782eda87baf304f0f2b318e8f5e4ff51b68af46416d6023619db4a0e05a1c753","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-26T03:10:24Z","title_canon_sha256":"fc32f6c280c4cff488aa65857ffe18197ed9d79202152ea76a6d9c4db9396d9a"},"schema_version":"1.0","source":{"id":"2005.12498","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.12498","created_at":"2026-07-05T01:55:53Z"},{"alias_kind":"arxiv_version","alias_value":"2005.12498v1","created_at":"2026-07-05T01:55:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.12498","created_at":"2026-07-05T01:55:53Z"},{"alias_kind":"pith_short_12","alias_value":"ZAXYV3HRPLEQ","created_at":"2026-07-05T01:55:53Z"},{"alias_kind":"pith_short_16","alias_value":"ZAXYV3HRPLEQ33T4","created_at":"2026-07-05T01:55:53Z"},{"alias_kind":"pith_short_8","alias_value":"ZAXYV3HR","created_at":"2026-07-05T01:55:53Z"}],"graph_snapshots":[{"event_id":"sha256:7f9ef009374a4e50208dbcbe0e33cd567b356e29c73c8c0b6c9b2b8d22cd3c4d","target":"graph","created_at":"2026-07-05T01:55:53Z","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/2005.12498/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With telescope apertures becoming larger and larger, the deployment of large-field telescopes is becoming increasingly popular. However, optical path calibration is necessary to ensure the image quality of large-field and large-diameter telescopes. In particular, focal plane attitude calibration is an essential optical path calibration technique that has a direct impact on image quality. In this paper, a focal plane attitude detection method using eight acquisition cameras is proposed based on the calibration requirements of the wide-field telescope, LAMOST. Comparison of simulation and experi","authors_text":"T.-Z Hu, X.-Q.Cui, X.-S.Pan, Y.Fu, Y.-P.Li, Y.Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-26T03:10:24Z","title":"Focal Surface Attitude Detection for LAMOST"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.12498","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":"sha256:001280497598d7258b2427a216a03393214055c7e1441727c149a58115e58f32","target":"record","created_at":"2026-07-05T01:55:53Z","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":"782eda87baf304f0f2b318e8f5e4ff51b68af46416d6023619db4a0e05a1c753","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-26T03:10:24Z","title_canon_sha256":"fc32f6c280c4cff488aa65857ffe18197ed9d79202152ea76a6d9c4db9396d9a"},"schema_version":"1.0","source":{"id":"2005.12498","kind":"arxiv","version":1}},"canonical_sha256":"c82f8aecf17ac90dee7c2323bd34cce251ca0f72e9757cb351e3e4822da20255","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c82f8aecf17ac90dee7c2323bd34cce251ca0f72e9757cb351e3e4822da20255","first_computed_at":"2026-07-05T01:55:53.809375Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:55:53.809375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P2kCcVhWamTzgyMiyia0vIpWrrSv1wDIvs64BrpfAZsdFeor/0+8Ub/A7xeCUajcGyd85Z0oAipjoQx9FzmBCA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:55:53.809869Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.12498","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:001280497598d7258b2427a216a03393214055c7e1441727c149a58115e58f32","sha256:7f9ef009374a4e50208dbcbe0e33cd567b356e29c73c8c0b6c9b2b8d22cd3c4d"],"state_sha256":"d5f29ab7fcfa0fb5cd77a4a9bdc0eb64b96a3765411f9851b94da15a7f99bb10"}