{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:FQOLVSDVHNKE7IFLYLPBX7IVRY","short_pith_number":"pith:FQOLVSDV","schema_version":"1.0","canonical_sha256":"2c1cbac8753b544fa0abc2de1bfd158e3b27e4eb40804b27dd851c050152d324","source":{"kind":"arxiv","id":"1509.01411","version":1},"attestation_state":"computed","paper":{"title":"Coronagraphic demonstration experiment using aluminum mirrors for space infrared astronomical observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Daisuke Ishihara, Hidehiro Kaneda, Kanae Haze, Keigo Enya, Lyu Abe, Miho Nishiyama, Shinji Oseki, Shinki Oyabu, Takayuki Kotani, Tomoyasu Yamamuro","submitted_at":"2015-09-04T11:36:10Z","abstract_excerpt":"For future space infrared astronomical coronagraphy, we perform experimental studies on the application of aluminum mirrors to a coronagraph. Cooled reflective optics is required for broad-band mid-infrared observations in space, while high-precision optics is required for coronagraphy. For the coronagraph instrument originally proposed for the next-generation infrared astronomical satellite project SPICA (SCI: SPICA Coronagraph Instrument), we fabricated and evaluated the optics consisting of high-precision aluminum off-axis mirrors with diamond-turned surfaces, and conducted a coronagraphic "},"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":"1509.01411","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-09-04T11:36:10Z","cross_cats_sorted":[],"title_canon_sha256":"8ca4db765debcf3bb4a828412ee90ba20861c93bf00ba97ccf6b36e956d7a44e","abstract_canon_sha256":"0d4d92f91b75098759fde25791ca27af43df447a34953b5a2f9bb5601549e9f5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:29.696833Z","signature_b64":"sKf4JwafD6B16lB5QnEy1hgsUqsVlZ8PSONYm4L0zLY2Lhp3Bb8zNcw9xNiWsPR2CShxGVOCM36MxXo8swKmDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c1cbac8753b544fa0abc2de1bfd158e3b27e4eb40804b27dd851c050152d324","last_reissued_at":"2026-05-18T01:19:29.696175Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:29.696175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Coronagraphic demonstration experiment using aluminum mirrors for space infrared astronomical observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Daisuke Ishihara, Hidehiro Kaneda, Kanae Haze, Keigo Enya, Lyu Abe, Miho Nishiyama, Shinji Oseki, Shinki Oyabu, Takayuki Kotani, Tomoyasu Yamamuro","submitted_at":"2015-09-04T11:36:10Z","abstract_excerpt":"For future space infrared astronomical coronagraphy, we perform experimental studies on the application of aluminum mirrors to a coronagraph. Cooled reflective optics is required for broad-band mid-infrared observations in space, while high-precision optics is required for coronagraphy. For the coronagraph instrument originally proposed for the next-generation infrared astronomical satellite project SPICA (SCI: SPICA Coronagraph Instrument), we fabricated and evaluated the optics consisting of high-precision aluminum off-axis mirrors with diamond-turned surfaces, and conducted a coronagraphic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.01411","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":"1509.01411","created_at":"2026-05-18T01:19:29.696283+00:00"},{"alias_kind":"arxiv_version","alias_value":"1509.01411v1","created_at":"2026-05-18T01:19:29.696283+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.01411","created_at":"2026-05-18T01:19:29.696283+00:00"},{"alias_kind":"pith_short_12","alias_value":"FQOLVSDVHNKE","created_at":"2026-05-18T12:29:22.688609+00:00"},{"alias_kind":"pith_short_16","alias_value":"FQOLVSDVHNKE7IFL","created_at":"2026-05-18T12:29:22.688609+00:00"},{"alias_kind":"pith_short_8","alias_value":"FQOLVSDV","created_at":"2026-05-18T12:29:22.688609+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/FQOLVSDVHNKE7IFLYLPBX7IVRY","json":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY.json","graph_json":"https://pith.science/api/pith-number/FQOLVSDVHNKE7IFLYLPBX7IVRY/graph.json","events_json":"https://pith.science/api/pith-number/FQOLVSDVHNKE7IFLYLPBX7IVRY/events.json","paper":"https://pith.science/paper/FQOLVSDV"},"agent_actions":{"view_html":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY","download_json":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY.json","view_paper":"https://pith.science/paper/FQOLVSDV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1509.01411&json=true","fetch_graph":"https://pith.science/api/pith-number/FQOLVSDVHNKE7IFLYLPBX7IVRY/graph.json","fetch_events":"https://pith.science/api/pith-number/FQOLVSDVHNKE7IFLYLPBX7IVRY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY/action/storage_attestation","attest_author":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY/action/author_attestation","sign_citation":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY/action/citation_signature","submit_replication":"https://pith.science/pith/FQOLVSDVHNKE7IFLYLPBX7IVRY/action/replication_record"}},"created_at":"2026-05-18T01:19:29.696283+00:00","updated_at":"2026-05-18T01:19:29.696283+00:00"}