{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:QCHVI6FSRZVKIH7Z4CAONLQXMN","short_pith_number":"pith:QCHVI6FS","schema_version":"1.0","canonical_sha256":"808f5478b28e6aa41ff9e080e6ae176365e932c810f9465df2eb99683111eb83","source":{"kind":"arxiv","id":"2403.10177","version":1},"attestation_state":"computed","paper":{"title":"Expected performance of the Pyramid wavefront sensor with a laser guide star for 40 m class telescopes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andr\\'es Guesalaga, Benoit Neichel, Francisco Oyarz\\'un, Thierry Fusco, Vincent Chambouleyron","submitted_at":"2024-03-15T10:32:06Z","abstract_excerpt":"The use of artificial Laser Guide Stars (LGS) is planned for the new generation of giant segmented mirror telescopes, to extend the sky coverage of their adaptive optics systems. The LGS, being a 3D object at a finite distance will have a large elongation that will affect its use with the Shack-Hartmann (SH) wavefront sensor. In this paper, we compute the expected performance for a Pyramid WaveFront Sensor (PWFS) using a LGS for a 40 m telescope affected by photon noise, and also extend the analysis to a flat 2D object as reference. We developed a new way to discretize the LGS, and a new, fast"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2403.10177","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-03-15T10:32:06Z","cross_cats_sorted":[],"title_canon_sha256":"cb12790ce2a7d139e9a0d9483e38875e06d509bbaef2092b893607a4012addbe","abstract_canon_sha256":"d7cd18071e59d73c1ed7da1955091b1e9f9ad73f72cc2a0c211c9c1332b3a968"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:34:12.054109Z","signature_b64":"p8KwNku8P3KA1vbK6KeK3EqOyHjCAo1AHQ//n4oN17MiFh9o/0Ea6j4onqL8F81+iQqlyoV43kqNUUsr9MiKAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"808f5478b28e6aa41ff9e080e6ae176365e932c810f9465df2eb99683111eb83","last_reissued_at":"2026-07-05T09:34:12.053677Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:34:12.053677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Expected performance of the Pyramid wavefront sensor with a laser guide star for 40 m class telescopes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andr\\'es Guesalaga, Benoit Neichel, Francisco Oyarz\\'un, Thierry Fusco, Vincent Chambouleyron","submitted_at":"2024-03-15T10:32:06Z","abstract_excerpt":"The use of artificial Laser Guide Stars (LGS) is planned for the new generation of giant segmented mirror telescopes, to extend the sky coverage of their adaptive optics systems. The LGS, being a 3D object at a finite distance will have a large elongation that will affect its use with the Shack-Hartmann (SH) wavefront sensor. In this paper, we compute the expected performance for a Pyramid WaveFront Sensor (PWFS) using a LGS for a 40 m telescope affected by photon noise, and also extend the analysis to a flat 2D object as reference. We developed a new way to discretize the LGS, and a new, fast"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.10177","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2403.10177/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2403.10177","created_at":"2026-07-05T09:34:12.053731+00:00"},{"alias_kind":"arxiv_version","alias_value":"2403.10177v1","created_at":"2026-07-05T09:34:12.053731+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.10177","created_at":"2026-07-05T09:34:12.053731+00:00"},{"alias_kind":"pith_short_12","alias_value":"QCHVI6FSRZVK","created_at":"2026-07-05T09:34:12.053731+00:00"},{"alias_kind":"pith_short_16","alias_value":"QCHVI6FSRZVKIH7Z","created_at":"2026-07-05T09:34:12.053731+00:00"},{"alias_kind":"pith_short_8","alias_value":"QCHVI6FS","created_at":"2026-07-05T09:34:12.053731+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN","json":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN.json","graph_json":"https://pith.science/api/pith-number/QCHVI6FSRZVKIH7Z4CAONLQXMN/graph.json","events_json":"https://pith.science/api/pith-number/QCHVI6FSRZVKIH7Z4CAONLQXMN/events.json","paper":"https://pith.science/paper/QCHVI6FS"},"agent_actions":{"view_html":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN","download_json":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN.json","view_paper":"https://pith.science/paper/QCHVI6FS","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2403.10177&json=true","fetch_graph":"https://pith.science/api/pith-number/QCHVI6FSRZVKIH7Z4CAONLQXMN/graph.json","fetch_events":"https://pith.science/api/pith-number/QCHVI6FSRZVKIH7Z4CAONLQXMN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN/action/storage_attestation","attest_author":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN/action/author_attestation","sign_citation":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN/action/citation_signature","submit_replication":"https://pith.science/pith/QCHVI6FSRZVKIH7Z4CAONLQXMN/action/replication_record"}},"created_at":"2026-07-05T09:34:12.053731+00:00","updated_at":"2026-07-05T09:34:12.053731+00:00"}