{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:BETL6V7YZ3ZMPY2M6LHXVMMSLX","short_pith_number":"pith:BETL6V7Y","schema_version":"1.0","canonical_sha256":"0926bf57f8cef2c7e34cf2cf7ab1925dc08b52633d8de8542936a8fec15aa968","source":{"kind":"arxiv","id":"2107.14341","version":1},"attestation_state":"computed","paper":{"title":"Lessons learned from SPHERE for the astrometric strategy of the next generation of exoplanet imaging instruments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"A. Boccaletti, A. Carlotti, A.-L. Maire, A. Vigan, E. L. Rickman, G. Chauvin, J. H. Girard, J.-U. Pott, L. Burtscher, M. A. Kenworthy, M. Langlois, P. Delorme, P. Kervella, R. Gratton, T. Henning, T. O. B. Schmidt, Z. Wahhaj","submitted_at":"2021-07-29T21:45:56Z","abstract_excerpt":"Measuring the orbits of directly-imaged exoplanets requires precise astrometry at the milliarcsec level over long periods of time due to their wide separation to the stars ($\\gtrsim$10 au) and long orbital period ($\\gtrsim$20 yr). To reach this challenging goal, a specific strategy was implemented for the instrument Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE), the first dedicated exoplanet imaging instrument at the Very Large Telescope of the European Southern Observatory (ESO). A key part of this strategy relies on the astrometric stability of the instrument over time. We m"},"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":"2107.14341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-07-29T21:45:56Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"315433dbc61441e2ca660dbc1eb4bec23bfd68c501a6708a9ee85bb68fc30299","abstract_canon_sha256":"c6226d8b5737801914e1dfb1799bddfdad184d6bfcc459a3e337facd86fce66f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:01:59.125750Z","signature_b64":"J9nngeSoaEGUGbdvYp9zMZjv/F6X06DGsUfQG5qFCgPVjBq2x+VBgYqGmK9mASqUizAHjqht4j5SCgPO0KILCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0926bf57f8cef2c7e34cf2cf7ab1925dc08b52633d8de8542936a8fec15aa968","last_reissued_at":"2026-07-05T03:01:59.125409Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:01:59.125409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lessons learned from SPHERE for the astrometric strategy of the next generation of exoplanet imaging instruments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"A. Boccaletti, A. Carlotti, A.-L. Maire, A. Vigan, E. L. Rickman, G. Chauvin, J. H. Girard, J.-U. Pott, L. Burtscher, M. A. Kenworthy, M. Langlois, P. Delorme, P. Kervella, R. Gratton, T. Henning, T. O. B. Schmidt, Z. Wahhaj","submitted_at":"2021-07-29T21:45:56Z","abstract_excerpt":"Measuring the orbits of directly-imaged exoplanets requires precise astrometry at the milliarcsec level over long periods of time due to their wide separation to the stars ($\\gtrsim$10 au) and long orbital period ($\\gtrsim$20 yr). To reach this challenging goal, a specific strategy was implemented for the instrument Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE), the first dedicated exoplanet imaging instrument at the Very Large Telescope of the European Southern Observatory (ESO). A key part of this strategy relies on the astrometric stability of the instrument over time. We m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.14341","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/2107.14341/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":"2107.14341","created_at":"2026-07-05T03:01:59.125469+00:00"},{"alias_kind":"arxiv_version","alias_value":"2107.14341v1","created_at":"2026-07-05T03:01:59.125469+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.14341","created_at":"2026-07-05T03:01:59.125469+00:00"},{"alias_kind":"pith_short_12","alias_value":"BETL6V7YZ3ZM","created_at":"2026-07-05T03:01:59.125469+00:00"},{"alias_kind":"pith_short_16","alias_value":"BETL6V7YZ3ZMPY2M","created_at":"2026-07-05T03:01:59.125469+00:00"},{"alias_kind":"pith_short_8","alias_value":"BETL6V7Y","created_at":"2026-07-05T03:01:59.125469+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/BETL6V7YZ3ZMPY2M6LHXVMMSLX","json":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX.json","graph_json":"https://pith.science/api/pith-number/BETL6V7YZ3ZMPY2M6LHXVMMSLX/graph.json","events_json":"https://pith.science/api/pith-number/BETL6V7YZ3ZMPY2M6LHXVMMSLX/events.json","paper":"https://pith.science/paper/BETL6V7Y"},"agent_actions":{"view_html":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX","download_json":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX.json","view_paper":"https://pith.science/paper/BETL6V7Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2107.14341&json=true","fetch_graph":"https://pith.science/api/pith-number/BETL6V7YZ3ZMPY2M6LHXVMMSLX/graph.json","fetch_events":"https://pith.science/api/pith-number/BETL6V7YZ3ZMPY2M6LHXVMMSLX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX/action/storage_attestation","attest_author":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX/action/author_attestation","sign_citation":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX/action/citation_signature","submit_replication":"https://pith.science/pith/BETL6V7YZ3ZMPY2M6LHXVMMSLX/action/replication_record"}},"created_at":"2026-07-05T03:01:59.125469+00:00","updated_at":"2026-07-05T03:01:59.125469+00:00"}