{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:FI2VOEAHC7MB2NRDN7G4VPU2TM","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":"518d5c3bfd843a4aef762a7e727fb96bec0c326a7360d1233650c74e9ebb078b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-06-13T07:42:57Z","title_canon_sha256":"99acd18b6d2cdc9974db7e3d816bba1e67a36942445a08838a92f2110020e0a8"},"schema_version":"1.0","source":{"id":"0906.2451","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.2451","created_at":"2026-05-18T02:13:20Z"},{"alias_kind":"arxiv_version","alias_value":"0906.2451v1","created_at":"2026-05-18T02:13:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.2451","created_at":"2026-05-18T02:13:20Z"},{"alias_kind":"pith_short_12","alias_value":"FI2VOEAHC7MB","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"FI2VOEAHC7MB2NRD","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"FI2VOEAH","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:065ae3954da99f020455663c8e93ac743cd20f2d33b5eb8acb7070607648fc07","target":"graph","created_at":"2026-05-18T02:13:20Z","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":"The contrasts of features in the quiet Sun are studied using filtergrams recorded by the Broad-band Filter Imager on the Hinode/Solar Optical Telescope.\n  In a first step, the scattered light originating in the instrument is modeled using Mercury transit data. Combinations of four two-dimensional Gaussians with different widths and weights were employed to retrieve the point-spread functions (PSF) of the instrument at different wavelengths, which also describe instrumental scattered light. The parameters of PSFs at different wavelengths are tabulated. The observed images were then deconvolved ","authors_text":"S. K. Mathew, S. K. Solanki, V. Zakharov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-06-13T07:42:57Z","title":"Stray light correction and contrast analysis of Hinode broad band images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.2451","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":"sha256:23f99b6c95284c6887f33344407493b4c6a5dd2ed56199548d74fbdbb882003e","target":"record","created_at":"2026-05-18T02:13:20Z","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":"518d5c3bfd843a4aef762a7e727fb96bec0c326a7360d1233650c74e9ebb078b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-06-13T07:42:57Z","title_canon_sha256":"99acd18b6d2cdc9974db7e3d816bba1e67a36942445a08838a92f2110020e0a8"},"schema_version":"1.0","source":{"id":"0906.2451","kind":"arxiv","version":1}},"canonical_sha256":"2a3557100717d81d36236fcdcabe9a9b25565c9ece30a2b2196aed7995c45ba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a3557100717d81d36236fcdcabe9a9b25565c9ece30a2b2196aed7995c45ba9","first_computed_at":"2026-05-18T02:13:20.389382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:20.389382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h950pa6bJBbmAb7iARMRa99oYZxWjyyjZoCBrmN66LK+b0MjPEa6eOH8wwE8GSQqRxYWOZE3QG9KOEG9fFn5Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:20.389878Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.2451","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:23f99b6c95284c6887f33344407493b4c6a5dd2ed56199548d74fbdbb882003e","sha256:065ae3954da99f020455663c8e93ac743cd20f2d33b5eb8acb7070607648fc07"],"state_sha256":"7f2f101baf24714066e645818efc030a76af7b520d8f557e297503fbe5e73fb4"}