{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:42FBQQZOJQ6GWZHA2CEZFUGNUI","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":"aa8bd30caa27b4d511e23d08064b6828400a05097bffcbd9761c950204ac75eb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-07-13T11:16:01Z","title_canon_sha256":"12d6e6c0287a60dfbe59c96f1c39cdf75d7216c28fb7209ec4abdffbe5fa0a73"},"schema_version":"1.0","source":{"id":"astro-ph/0507299","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0507299","created_at":"2026-07-04T14:48:28Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0507299v1","created_at":"2026-07-04T14:48:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0507299","created_at":"2026-07-04T14:48:28Z"},{"alias_kind":"pith_short_12","alias_value":"42FBQQZOJQ6G","created_at":"2026-07-04T14:48:28Z"},{"alias_kind":"pith_short_16","alias_value":"42FBQQZOJQ6GWZHA","created_at":"2026-07-04T14:48:28Z"},{"alias_kind":"pith_short_8","alias_value":"42FBQQZO","created_at":"2026-07-04T14:48:28Z"}],"graph_snapshots":[{"event_id":"sha256:d4797ffb31f47c86ce22cb9919b9745c9a58631cfea2810072004183bde9fca7","target":"graph","created_at":"2026-07-04T14:48:28Z","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/astro-ph/0507299/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use a Lucky Imaging system to obtain I-band images with much improved angular resolution on a ground-based 2.5m telescope. We present results from a 10-night assessment campaign on the 2.56m Nordic Optical Telescope and quantify the performance of our system in seeings better than 1.0''. In good seeing we have acquired near diffraction-limited images; in poorer seeing the angular resolution has been routinely improved by factors of 2.5-4. The system can use guide stars as faint as I=16 with full performance and its useful field of view is consistently larger than 40\" diameter. The technique","authors_text":"(2) Cavendish Laboratory, Cambridge, Cambridge), Craig D. Mackay (1), John E. Baldwin (2) ((1) IOA, Nicholas M. Law (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-07-13T11:16:01Z","title":"Lucky Imaging: High Angular Resolution Imaging in the Visible from the Ground"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0507299","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:ac4fdef39573f2e329cd8b91b1a305d8d772b035eefcabbd611a917fb1543be0","target":"record","created_at":"2026-07-04T14:48:28Z","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":"aa8bd30caa27b4d511e23d08064b6828400a05097bffcbd9761c950204ac75eb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-07-13T11:16:01Z","title_canon_sha256":"12d6e6c0287a60dfbe59c96f1c39cdf75d7216c28fb7209ec4abdffbe5fa0a73"},"schema_version":"1.0","source":{"id":"astro-ph/0507299","kind":"arxiv","version":1}},"canonical_sha256":"e68a18432e4c3c6b64e0d08992d0cda21b6fc0cceda41eb89c2b536ffcf62851","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e68a18432e4c3c6b64e0d08992d0cda21b6fc0cceda41eb89c2b536ffcf62851","first_computed_at":"2026-07-04T14:48:28.790378Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:48:28.790378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6PRIXqamMWMwZl45g9YWhPivEQu7R+Omabo4drqh9lxm+dE4s5TjJ+keKMkxk9ZtpV4wlwQUfMkvWUDW7UexAg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:48:28.790856Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0507299","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac4fdef39573f2e329cd8b91b1a305d8d772b035eefcabbd611a917fb1543be0","sha256:d4797ffb31f47c86ce22cb9919b9745c9a58631cfea2810072004183bde9fca7"],"state_sha256":"3b350e09863bfad5c9c4f79c4add4166575f414d230d1365ba4068294be631f0"}