{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:ISGHSY4IHM33SWOCL5QXSZDPIU","short_pith_number":"pith:ISGHSY4I","schema_version":"1.0","canonical_sha256":"448c7963883b37b959c25f6179646f450176fda4c11c2edceae3515eb609b0f8","source":{"kind":"arxiv","id":"1407.2278","version":1},"attestation_state":"computed","paper":{"title":"On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrew Cardwell, Brian Bauman, Bruce Macintosh, Daren Dillon, David W. Palmer, Dmitry Savransky, Donald Gavel, Fredrik T. Rantakyro, Jean-Pierre Veran, Jeffrey K. Chilcote, Lisa A. Poyneer, Markus Hartung, Marshall D. Perrin, Naru Sadakuni, Pascale Hibon, Robert J. De Rosa, Sandrine Thomas, Stephen J. Goodsell","submitted_at":"2014-07-08T21:30:54Z","abstract_excerpt":"The Gemini Planet Imager instrument's adaptive optics (AO) subsystem was designed specifically to facilitate high-contrast imaging. It features several new technologies, including computationally efficient wavefront reconstruction with the Fourier transform, modal gain optimization every 8 seconds, and the spatially filtered wavefront sensor. It also uses a Linear-Quadratic-Gaussian (LQG) controller (aka Kalman filter) for both pointing and focus. We present on-sky performance results from verification and commissioning runs from December 2013 through May 2014. The efficient reconstruction and"},"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":"1407.2278","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-08T21:30:54Z","cross_cats_sorted":[],"title_canon_sha256":"71409432fd951f27c101907453c16211122dc9df8cfe077b73e1b88078d9471e","abstract_canon_sha256":"85a675c52c20ee6fbaf76f51f80a9a4d4444a0e3dbda3ac7da0ccccaa4fe083e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:40.629363Z","signature_b64":"AH3cDcDjXlHkz4sy4Rk58jS5F/cPNf5xNjihSviJbDYnNLqBxAedSIuIN1fjnE+RGQOZKV1jSgLrfhX+a0rqBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"448c7963883b37b959c25f6179646f450176fda4c11c2edceae3515eb609b0f8","last_reissued_at":"2026-05-18T01:42:40.628893Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:40.628893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrew Cardwell, Brian Bauman, Bruce Macintosh, Daren Dillon, David W. Palmer, Dmitry Savransky, Donald Gavel, Fredrik T. Rantakyro, Jean-Pierre Veran, Jeffrey K. Chilcote, Lisa A. Poyneer, Markus Hartung, Marshall D. Perrin, Naru Sadakuni, Pascale Hibon, Robert J. De Rosa, Sandrine Thomas, Stephen J. Goodsell","submitted_at":"2014-07-08T21:30:54Z","abstract_excerpt":"The Gemini Planet Imager instrument's adaptive optics (AO) subsystem was designed specifically to facilitate high-contrast imaging. It features several new technologies, including computationally efficient wavefront reconstruction with the Fourier transform, modal gain optimization every 8 seconds, and the spatially filtered wavefront sensor. It also uses a Linear-Quadratic-Gaussian (LQG) controller (aka Kalman filter) for both pointing and focus. We present on-sky performance results from verification and commissioning runs from December 2013 through May 2014. The efficient reconstruction and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2278","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":""},"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":"1407.2278","created_at":"2026-05-18T01:42:40.628964+00:00"},{"alias_kind":"arxiv_version","alias_value":"1407.2278v1","created_at":"2026-05-18T01:42:40.628964+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2278","created_at":"2026-05-18T01:42:40.628964+00:00"},{"alias_kind":"pith_short_12","alias_value":"ISGHSY4IHM33","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_16","alias_value":"ISGHSY4IHM33SWOC","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_8","alias_value":"ISGHSY4I","created_at":"2026-05-18T12:28:33.132498+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/ISGHSY4IHM33SWOCL5QXSZDPIU","json":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU.json","graph_json":"https://pith.science/api/pith-number/ISGHSY4IHM33SWOCL5QXSZDPIU/graph.json","events_json":"https://pith.science/api/pith-number/ISGHSY4IHM33SWOCL5QXSZDPIU/events.json","paper":"https://pith.science/paper/ISGHSY4I"},"agent_actions":{"view_html":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU","download_json":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU.json","view_paper":"https://pith.science/paper/ISGHSY4I","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1407.2278&json=true","fetch_graph":"https://pith.science/api/pith-number/ISGHSY4IHM33SWOCL5QXSZDPIU/graph.json","fetch_events":"https://pith.science/api/pith-number/ISGHSY4IHM33SWOCL5QXSZDPIU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU/action/storage_attestation","attest_author":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU/action/author_attestation","sign_citation":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU/action/citation_signature","submit_replication":"https://pith.science/pith/ISGHSY4IHM33SWOCL5QXSZDPIU/action/replication_record"}},"created_at":"2026-05-18T01:42:40.628964+00:00","updated_at":"2026-05-18T01:42:40.628964+00:00"}