{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QH5NQO3JRYE7TL7MYISJ26ELZ6","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":"387d93dcabd7dc54ecdbb92e37a40f9d628023f11a09bd094e34f26d75554060","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-14T08:26:51Z","title_canon_sha256":"986021b5b2a63b5909dca790288a8a00753bd37dd23d9bfff672ab6c1ee91222"},"schema_version":"1.0","source":{"id":"2607.12494","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.12494","created_at":"2026-07-15T01:21:37Z"},{"alias_kind":"arxiv_version","alias_value":"2607.12494v1","created_at":"2026-07-15T01:21:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.12494","created_at":"2026-07-15T01:21:37Z"},{"alias_kind":"pith_short_12","alias_value":"QH5NQO3JRYE7","created_at":"2026-07-15T01:21:37Z"},{"alias_kind":"pith_short_16","alias_value":"QH5NQO3JRYE7TL7M","created_at":"2026-07-15T01:21:37Z"},{"alias_kind":"pith_short_8","alias_value":"QH5NQO3J","created_at":"2026-07-15T01:21:37Z"}],"graph_snapshots":[{"event_id":"sha256:838c57e423281129602c434a3d4c7031322678ff06fcf40a4b9e091af06d5a53","target":"graph","created_at":"2026-07-15T01:21:37Z","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/2607.12494/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Laser guide star (LGS) adaptive optics cannot directly measure tip-tilt (TT), forcing reliance on natural guide stars and limiting sky coverage. We propose estimating the uplink TT from telemetry acquired at the laser launch telescope alone, operated in a monostatic configuration as both emitter and receiver. Extracting TT over concentric disks of different diameters within the receiving pupil yields signals mixing uplink and downlink contributions in different proportions; this aperture size diversity, combined with an LMMSE estimator, disentangles the uplink component. Simulations show a res","authors_text":"Benoit Neichel, Carlos M. Correia, C\\'edric Taissir Heritier, Jean-Fran\\c{c}ois Sauvage, Pierre Jouve, Thierry Fusco","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-14T08:26:51Z","title":"Estimation of the laser guide star uplink tip-tilt using aperture size diversity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.12494","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:d77cd4f5db067678c7d95f7d27d2ab14c381504e11278bfcce81bfee107f01c7","target":"record","created_at":"2026-07-15T01:21:37Z","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":"387d93dcabd7dc54ecdbb92e37a40f9d628023f11a09bd094e34f26d75554060","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-07-14T08:26:51Z","title_canon_sha256":"986021b5b2a63b5909dca790288a8a00753bd37dd23d9bfff672ab6c1ee91222"},"schema_version":"1.0","source":{"id":"2607.12494","kind":"arxiv","version":1}},"canonical_sha256":"81fad83b698e09f9afecc2249d788bcf9b2d237a0c3f3969fc9ba9869455cf9c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81fad83b698e09f9afecc2249d788bcf9b2d237a0c3f3969fc9ba9869455cf9c","first_computed_at":"2026-07-15T01:21:37.981667Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-15T01:21:37.981667Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QC08HAcUK6XOa0T+uOV/0Tl1tKapOs+tM5s4z6y92S79f7A3PG4j9wnGkE1DQVlYKREZLHn9CUruU3n2SNqcBg==","signature_status":"signed_v1","signed_at":"2026-07-15T01:21:37.982583Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.12494","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d77cd4f5db067678c7d95f7d27d2ab14c381504e11278bfcce81bfee107f01c7","sha256:838c57e423281129602c434a3d4c7031322678ff06fcf40a4b9e091af06d5a53"],"state_sha256":"cde6630b4dee53c1c43f7afc24e0377e5a347e46aaccfe29e963d9330cfba6ff"}