{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:E7JJTEKYOQ4NKUTFVKNEJ7W566","short_pith_number":"pith:E7JJTEKY","canonical_record":{"source":{"id":"1701.09027","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-01-31T13:19:09Z","cross_cats_sorted":[],"title_canon_sha256":"5f23b8644e79550769dfe55d01183a0f1605f456bf9d4feb74d5c4791d8d89ff","abstract_canon_sha256":"5353ed7abd9e09fcd85d9cfdec384b66eabc5ca2581daadbc48634de789df12c"},"schema_version":"1.0"},"canonical_sha256":"27d29991587438d55265aa9a44feddf7b9074cea96f52fa1f14281c7cd60a093","source":{"kind":"arxiv","id":"1701.09027","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.09027","created_at":"2026-05-18T00:51:38Z"},{"alias_kind":"arxiv_version","alias_value":"1701.09027v1","created_at":"2026-05-18T00:51:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.09027","created_at":"2026-05-18T00:51:38Z"},{"alias_kind":"pith_short_12","alias_value":"E7JJTEKYOQ4N","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E7JJTEKYOQ4NKUTF","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E7JJTEKY","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:E7JJTEKYOQ4NKUTFVKNEJ7W566","target":"record","payload":{"canonical_record":{"source":{"id":"1701.09027","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-01-31T13:19:09Z","cross_cats_sorted":[],"title_canon_sha256":"5f23b8644e79550769dfe55d01183a0f1605f456bf9d4feb74d5c4791d8d89ff","abstract_canon_sha256":"5353ed7abd9e09fcd85d9cfdec384b66eabc5ca2581daadbc48634de789df12c"},"schema_version":"1.0"},"canonical_sha256":"27d29991587438d55265aa9a44feddf7b9074cea96f52fa1f14281c7cd60a093","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:38.641410Z","signature_b64":"X/jPM7Ipd3NTeHMghAIDuIb9EOUHpXZ1CQatkC66EWxKXAxlLIckyoMV0pLPPuI8UsB659J7FNsJgCLfh5beDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27d29991587438d55265aa9a44feddf7b9074cea96f52fa1f14281c7cd60a093","last_reissued_at":"2026-05-18T00:51:38.640837Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:38.640837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.09027","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":"2026-05-18T00:51:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Y+qnhVjNOk5539gzD1+cQJ2tpKgLXgeQWZBVbX+cZsmAH05uH/Ti8CKG+lk4a4hdg6+jxgQZmXbr/Brc7kGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:05:12.705241Z"},"content_sha256":"17b57c99502da96881953334f2dfe4c472358e96a215a0469cf0a8c9d3a3698d","schema_version":"1.0","event_id":"sha256:17b57c99502da96881953334f2dfe4c472358e96a215a0469cf0a8c9d3a3698d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:E7JJTEKYOQ4NKUTFVKNEJ7W566","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"In-flight calibration of the Dawn Framing Camera II: Flat fields and stray light correction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"K.-D. Matz, S.E. Schr\\\"oder, S. Mottola, T. Roatsch","submitted_at":"2017-01-31T13:19:09Z","abstract_excerpt":"The NASA Dawn spacecraft acquired thousands of images of asteroid Vesta during its year-long orbital tour, and is now on its way to asteroid Ceres. A method for calibrating images acquired by the onboard Framing Camera was described by Schr\\\"oder et al. (2013; Icarus 226, 1304). However, their method is only valid for point sources. In this paper we extend the calibration to images of extended sources like Vesta. For this, we devise a first-order correction for in-field stray light, which is known to plague images taken through the narrow band filters, and revise the flat fields that were acqu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.09027","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":"2026-05-18T00:51:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bEHCdNWks61WZeePrB8Qk1g2Wat2sxqFaMkVykmAuM0DpUefD56EBfitSSed8usI7fbjBjkkNiQl0KJ60P8FCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:05:12.705635Z"},"content_sha256":"5b7355d4eb7ff829c149fc8f413167f08fe55d5212c3c890db6edcc92d2d88e3","schema_version":"1.0","event_id":"sha256:5b7355d4eb7ff829c149fc8f413167f08fe55d5212c3c890db6edcc92d2d88e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566/bundle.json","state_url":"https://pith.science/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566/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":"2026-05-28T10:05:12Z","links":{"resolver":"https://pith.science/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566","bundle":"https://pith.science/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566/bundle.json","state":"https://pith.science/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E7JJTEKYOQ4NKUTFVKNEJ7W566/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:E7JJTEKYOQ4NKUTFVKNEJ7W566","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":"5353ed7abd9e09fcd85d9cfdec384b66eabc5ca2581daadbc48634de789df12c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-01-31T13:19:09Z","title_canon_sha256":"5f23b8644e79550769dfe55d01183a0f1605f456bf9d4feb74d5c4791d8d89ff"},"schema_version":"1.0","source":{"id":"1701.09027","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.09027","created_at":"2026-05-18T00:51:38Z"},{"alias_kind":"arxiv_version","alias_value":"1701.09027v1","created_at":"2026-05-18T00:51:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.09027","created_at":"2026-05-18T00:51:38Z"},{"alias_kind":"pith_short_12","alias_value":"E7JJTEKYOQ4N","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E7JJTEKYOQ4NKUTF","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E7JJTEKY","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:5b7355d4eb7ff829c149fc8f413167f08fe55d5212c3c890db6edcc92d2d88e3","target":"graph","created_at":"2026-05-18T00:51:38Z","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 NASA Dawn spacecraft acquired thousands of images of asteroid Vesta during its year-long orbital tour, and is now on its way to asteroid Ceres. A method for calibrating images acquired by the onboard Framing Camera was described by Schr\\\"oder et al. (2013; Icarus 226, 1304). However, their method is only valid for point sources. In this paper we extend the calibration to images of extended sources like Vesta. For this, we devise a first-order correction for in-field stray light, which is known to plague images taken through the narrow band filters, and revise the flat fields that were acqu","authors_text":"K.-D. Matz, S.E. Schr\\\"oder, S. Mottola, T. Roatsch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-01-31T13:19:09Z","title":"In-flight calibration of the Dawn Framing Camera II: Flat fields and stray light correction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.09027","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":"sha256:17b57c99502da96881953334f2dfe4c472358e96a215a0469cf0a8c9d3a3698d","target":"record","created_at":"2026-05-18T00:51:38Z","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":"5353ed7abd9e09fcd85d9cfdec384b66eabc5ca2581daadbc48634de789df12c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-01-31T13:19:09Z","title_canon_sha256":"5f23b8644e79550769dfe55d01183a0f1605f456bf9d4feb74d5c4791d8d89ff"},"schema_version":"1.0","source":{"id":"1701.09027","kind":"arxiv","version":1}},"canonical_sha256":"27d29991587438d55265aa9a44feddf7b9074cea96f52fa1f14281c7cd60a093","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27d29991587438d55265aa9a44feddf7b9074cea96f52fa1f14281c7cd60a093","first_computed_at":"2026-05-18T00:51:38.640837Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:38.640837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X/jPM7Ipd3NTeHMghAIDuIb9EOUHpXZ1CQatkC66EWxKXAxlLIckyoMV0pLPPuI8UsB659J7FNsJgCLfh5beDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:38.641410Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.09027","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17b57c99502da96881953334f2dfe4c472358e96a215a0469cf0a8c9d3a3698d","sha256:5b7355d4eb7ff829c149fc8f413167f08fe55d5212c3c890db6edcc92d2d88e3"],"state_sha256":"c188634e5d6f03a0de0d6f2daeae8d7e6f647ba1aa980a241d9874e3b8259e5d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fdby2bl/pcNKM1op0XBMjjjCgErE/bNpmGH1UAqAz/8oy0GDffcL2QjQcHP1380r1tmZOqoWe0imlMzfa/57BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T10:05:12.707539Z","bundle_sha256":"fc4cc3ff62465319d7516f37cdb1d968db4460bfcf3701950eca94dc4c77d448"}}