{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:LW7PXHU44W26YJEIPTH54FMMVX","short_pith_number":"pith:LW7PXHU4","schema_version":"1.0","canonical_sha256":"5dbefb9e9ce5b5ec24887ccfde158cadeff6b2b44120275ae59a573eff292c4c","source":{"kind":"arxiv","id":"1806.08168","version":1},"attestation_state":"computed","paper":{"title":"Design of optical systems with toroidal curved detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Eduard Muslimov, Emmanuel Hugot, Gerard R. Lemaitre, Marc Ferrari, Melanie Roulet, Simona Lombardo, Thibault Behaghel","submitted_at":"2018-06-21T11:09:01Z","abstract_excerpt":"We consider using toroidal curved detectors to improve the performance of imaging optical systems. We demonstrate that some optical systems have an anamorphic field curvature. We consider an unobscured re-imaging three-mirror anastigmat as an example (f'=960 mm, F/5.3, FoV 4x4 degrees). By assuming that the image is focused on a toroidal detector surface and perform re-optimization, it becomes possible to obtain a notable gain in the image quality - up to 40 % in terms of the spot RMS radius. Through analytic computations and finite-element analysis, we demonstrate that this toroidal shape can"},"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":"1806.08168","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-21T11:09:01Z","cross_cats_sorted":[],"title_canon_sha256":"b6a9dd391682436567b32e0a689cf4abacb8700d3e911abbd0f81eced95cad3e","abstract_canon_sha256":"e3788ce077180317f251874e0eda351fc780cfa234e83ae5ca1762de6ce85345"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:41.818289Z","signature_b64":"jkKRBzRzTud1Ek3ptcj6dt7AivTTNMrpFe7gwE/0GwyeIyBuqVrG07G1il+1qnnqZKr7xR7GGGroBwXX9VEhAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5dbefb9e9ce5b5ec24887ccfde158cadeff6b2b44120275ae59a573eff292c4c","last_reissued_at":"2026-05-18T00:12:41.817675Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:41.817675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Design of optical systems with toroidal curved detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Eduard Muslimov, Emmanuel Hugot, Gerard R. Lemaitre, Marc Ferrari, Melanie Roulet, Simona Lombardo, Thibault Behaghel","submitted_at":"2018-06-21T11:09:01Z","abstract_excerpt":"We consider using toroidal curved detectors to improve the performance of imaging optical systems. We demonstrate that some optical systems have an anamorphic field curvature. We consider an unobscured re-imaging three-mirror anastigmat as an example (f'=960 mm, F/5.3, FoV 4x4 degrees). By assuming that the image is focused on a toroidal detector surface and perform re-optimization, it becomes possible to obtain a notable gain in the image quality - up to 40 % in terms of the spot RMS radius. Through analytic computations and finite-element analysis, we demonstrate that this toroidal shape can"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.08168","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":"1806.08168","created_at":"2026-05-18T00:12:41.817768+00:00"},{"alias_kind":"arxiv_version","alias_value":"1806.08168v1","created_at":"2026-05-18T00:12:41.817768+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.08168","created_at":"2026-05-18T00:12:41.817768+00:00"},{"alias_kind":"pith_short_12","alias_value":"LW7PXHU44W26","created_at":"2026-05-18T12:32:37.024351+00:00"},{"alias_kind":"pith_short_16","alias_value":"LW7PXHU44W26YJEI","created_at":"2026-05-18T12:32:37.024351+00:00"},{"alias_kind":"pith_short_8","alias_value":"LW7PXHU4","created_at":"2026-05-18T12:32:37.024351+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/LW7PXHU44W26YJEIPTH54FMMVX","json":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX.json","graph_json":"https://pith.science/api/pith-number/LW7PXHU44W26YJEIPTH54FMMVX/graph.json","events_json":"https://pith.science/api/pith-number/LW7PXHU44W26YJEIPTH54FMMVX/events.json","paper":"https://pith.science/paper/LW7PXHU4"},"agent_actions":{"view_html":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX","download_json":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX.json","view_paper":"https://pith.science/paper/LW7PXHU4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1806.08168&json=true","fetch_graph":"https://pith.science/api/pith-number/LW7PXHU44W26YJEIPTH54FMMVX/graph.json","fetch_events":"https://pith.science/api/pith-number/LW7PXHU44W26YJEIPTH54FMMVX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX/action/storage_attestation","attest_author":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX/action/author_attestation","sign_citation":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX/action/citation_signature","submit_replication":"https://pith.science/pith/LW7PXHU44W26YJEIPTH54FMMVX/action/replication_record"}},"created_at":"2026-05-18T00:12:41.817768+00:00","updated_at":"2026-05-18T00:12:41.817768+00:00"}