{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:FJ4G54N6FEMS7HNHNL7YO7MSDJ","short_pith_number":"pith:FJ4G54N6","canonical_record":{"source":{"id":"1008.4218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-08-25T07:24:02Z","cross_cats_sorted":[],"title_canon_sha256":"1185e3d52c99292d5754721f65a973ec4c5952f85567b2cb7bb00e12a885a766","abstract_canon_sha256":"2186e85e614ae3581e349a66881f23fa569eb06c2700d080f11d83ca7609dc04"},"schema_version":"1.0"},"canonical_sha256":"2a786ef1be29192f9da76aff877d921a712f28b42947e13154fac3a0694ae5df","source":{"kind":"arxiv","id":"1008.4218","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.4218","created_at":"2026-05-18T02:05:42Z"},{"alias_kind":"arxiv_version","alias_value":"1008.4218v1","created_at":"2026-05-18T02:05:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.4218","created_at":"2026-05-18T02:05:42Z"},{"alias_kind":"pith_short_12","alias_value":"FJ4G54N6FEMS","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"FJ4G54N6FEMS7HNH","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"FJ4G54N6","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:FJ4G54N6FEMS7HNHNL7YO7MSDJ","target":"record","payload":{"canonical_record":{"source":{"id":"1008.4218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-08-25T07:24:02Z","cross_cats_sorted":[],"title_canon_sha256":"1185e3d52c99292d5754721f65a973ec4c5952f85567b2cb7bb00e12a885a766","abstract_canon_sha256":"2186e85e614ae3581e349a66881f23fa569eb06c2700d080f11d83ca7609dc04"},"schema_version":"1.0"},"canonical_sha256":"2a786ef1be29192f9da76aff877d921a712f28b42947e13154fac3a0694ae5df","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:42.988442Z","signature_b64":"tysXp6vcMGa2qEOn+pD5QcxPfR5h7KTWc71+uEOUYiLMgsh6K2pcfmEdm9phkTqzuHhjVOzvj7UwNVBXEUWpDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a786ef1be29192f9da76aff877d921a712f28b42947e13154fac3a0694ae5df","last_reissued_at":"2026-05-18T02:05:42.987811Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:42.987811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.4218","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:05:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fi8KR5xNHr45/D3CuQow5eSyLmTnKTnGZq2j4k2Ma4f3wI16G7cQLBA9feyp3fhwG5FKCrHBCNubWr6TD35MAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:00:12.006259Z"},"content_sha256":"08a9b1ed5fe2295ec238807676c6efde00616b7a85d85db51dbbcf14966d66e6","schema_version":"1.0","event_id":"sha256:08a9b1ed5fe2295ec238807676c6efde00616b7a85d85db51dbbcf14966d66e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:FJ4G54N6FEMS7HNHNL7YO7MSDJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fresnel diffraction in an interferometer: application to MATISSE","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Bruno Lopez, Eric Aristidi (FIZEAU), Pierre Antonelli (FIZEAU), Romain G. Petrov (FIZEAU), Stephane Lagarde, Sylvie Robbe-Dubois (FIZEAU), Yves Bresson","submitted_at":"2010-08-25T07:24:02Z","abstract_excerpt":"While doing optical study in an instrument similar to the interferometers dedicated to the Very Large Telescope (VLT), we have to take care of the pupil and focus conjugations. Modules with artificial sources are designed to simulate the stellar beams, in terms of collimation and pupil location. They constitute alignment and calibration tools. In this paper, we present such a module in which the pupil mask is not located in a collimated beam thus introducing Fresnel diffraction. We study the instrumental contrast taking into account the spatial coherence of the source, and the pupil diffractio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4218","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:05:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rr95yghZkeK4u0t+CfCYWO+DI9okaaMTMRzXGkMKWfIXSb3uZ6sZ/iyRPuV2SZZbMamg5Mh4JLnVwgh+eyfuAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:00:12.006646Z"},"content_sha256":"ce281a27179226cbe275f64adf888b68e19859f0724b75289949824cd515505d","schema_version":"1.0","event_id":"sha256:ce281a27179226cbe275f64adf888b68e19859f0724b75289949824cd515505d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ/bundle.json","state_url":"https://pith.science/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T10:00:12Z","links":{"resolver":"https://pith.science/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ","bundle":"https://pith.science/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ/bundle.json","state":"https://pith.science/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FJ4G54N6FEMS7HNHNL7YO7MSDJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:FJ4G54N6FEMS7HNHNL7YO7MSDJ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"2186e85e614ae3581e349a66881f23fa569eb06c2700d080f11d83ca7609dc04","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-08-25T07:24:02Z","title_canon_sha256":"1185e3d52c99292d5754721f65a973ec4c5952f85567b2cb7bb00e12a885a766"},"schema_version":"1.0","source":{"id":"1008.4218","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.4218","created_at":"2026-05-18T02:05:42Z"},{"alias_kind":"arxiv_version","alias_value":"1008.4218v1","created_at":"2026-05-18T02:05:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.4218","created_at":"2026-05-18T02:05:42Z"},{"alias_kind":"pith_short_12","alias_value":"FJ4G54N6FEMS","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"FJ4G54N6FEMS7HNH","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"FJ4G54N6","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:ce281a27179226cbe275f64adf888b68e19859f0724b75289949824cd515505d","target":"graph","created_at":"2026-05-18T02:05:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"While doing optical study in an instrument similar to the interferometers dedicated to the Very Large Telescope (VLT), we have to take care of the pupil and focus conjugations. Modules with artificial sources are designed to simulate the stellar beams, in terms of collimation and pupil location. They constitute alignment and calibration tools. In this paper, we present such a module in which the pupil mask is not located in a collimated beam thus introducing Fresnel diffraction. We study the instrumental contrast taking into account the spatial coherence of the source, and the pupil diffractio","authors_text":"Bruno Lopez, Eric Aristidi (FIZEAU), Pierre Antonelli (FIZEAU), Romain G. Petrov (FIZEAU), Stephane Lagarde, Sylvie Robbe-Dubois (FIZEAU), Yves Bresson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-08-25T07:24:02Z","title":"Fresnel diffraction in an interferometer: application to MATISSE"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4218","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:08a9b1ed5fe2295ec238807676c6efde00616b7a85d85db51dbbcf14966d66e6","target":"record","created_at":"2026-05-18T02:05:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"2186e85e614ae3581e349a66881f23fa569eb06c2700d080f11d83ca7609dc04","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-08-25T07:24:02Z","title_canon_sha256":"1185e3d52c99292d5754721f65a973ec4c5952f85567b2cb7bb00e12a885a766"},"schema_version":"1.0","source":{"id":"1008.4218","kind":"arxiv","version":1}},"canonical_sha256":"2a786ef1be29192f9da76aff877d921a712f28b42947e13154fac3a0694ae5df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a786ef1be29192f9da76aff877d921a712f28b42947e13154fac3a0694ae5df","first_computed_at":"2026-05-18T02:05:42.987811Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:42.987811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tysXp6vcMGa2qEOn+pD5QcxPfR5h7KTWc71+uEOUYiLMgsh6K2pcfmEdm9phkTqzuHhjVOzvj7UwNVBXEUWpDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:42.988442Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.4218","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08a9b1ed5fe2295ec238807676c6efde00616b7a85d85db51dbbcf14966d66e6","sha256:ce281a27179226cbe275f64adf888b68e19859f0724b75289949824cd515505d"],"state_sha256":"eeb13223c872b9993b1c09d39468e20f9ae519039c857875bccfa92c63285fae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+F/BVeqLbQgsMxfLwZZqbzHQ3A8bIq0F76nrTg0LvV6WX2iSKGRrU9xIGig2GXiNkNUP+3MqktWf2QdegRwGBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T10:00:12.008594Z","bundle_sha256":"de6811849f7feb4e6253f7996e58490189d81428928733df62ad00e9946f62fd"}}