{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:TKWM26QATKMXT6LEJCLFP2BG73","short_pith_number":"pith:TKWM26QA","canonical_record":{"source":{"id":"1110.2261","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-11T03:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"048585b01cb5396fa8d4af79a3fd42f6585c20c3cb7e48d051ba3870fefdc8a7","abstract_canon_sha256":"d44bdff30686f4c1adf311a1b35dc6414dc9d35a55346c658c61440053e007ff"},"schema_version":"1.0"},"canonical_sha256":"9aaccd7a009a9979f964489657e826fec4646c9aeecf7bd7991b3a350c75a9ff","source":{"kind":"arxiv","id":"1110.2261","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.2261","created_at":"2026-05-18T02:00:13Z"},{"alias_kind":"arxiv_version","alias_value":"1110.2261v4","created_at":"2026-05-18T02:00:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.2261","created_at":"2026-05-18T02:00:13Z"},{"alias_kind":"pith_short_12","alias_value":"TKWM26QATKMX","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"TKWM26QATKMXT6LE","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"TKWM26QA","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:TKWM26QATKMXT6LEJCLFP2BG73","target":"record","payload":{"canonical_record":{"source":{"id":"1110.2261","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-11T03:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"048585b01cb5396fa8d4af79a3fd42f6585c20c3cb7e48d051ba3870fefdc8a7","abstract_canon_sha256":"d44bdff30686f4c1adf311a1b35dc6414dc9d35a55346c658c61440053e007ff"},"schema_version":"1.0"},"canonical_sha256":"9aaccd7a009a9979f964489657e826fec4646c9aeecf7bd7991b3a350c75a9ff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:13.904786Z","signature_b64":"rQIYDE9pAPLM8AGJtTggWi+A6/xky4fCtvz5XgYtBtooGt1S+GiH+fRtbK0/2V8RJbHVhuL0xUVcqXMq0l/NBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9aaccd7a009a9979f964489657e826fec4646c9aeecf7bd7991b3a350c75a9ff","last_reissued_at":"2026-05-18T02:00:13.903932Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:13.903932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.2261","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:00:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"far64PVuo7rq6f5iWjW9NdB5VvBWXS2silKUcD0idYyBGtMBLVdB3C7obHtiJ6NgXjNbRXx31C1mNg6MkUR1Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T18:24:55.084877Z"},"content_sha256":"092e40e72e79e413547816674833f2bc0768bdc268236038d3beadcac274f511","schema_version":"1.0","event_id":"sha256:092e40e72e79e413547816674833f2bc0768bdc268236038d3beadcac274f511"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:TKWM26QATKMXT6LEJCLFP2BG73","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Holographic Imaging of Crowded Fields: High Angular Resolution Imaging with Excellent Quality at Very Low Cost","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Ghez, A. Perez-Garrido, J. H. V. Girard, L. Labadie, M. R. Morris, R. Rebolo, R. Schoedel, S. Yelda","submitted_at":"2011-10-11T03:51:03Z","abstract_excerpt":"We present a method for speckle holography that is optimised for crowded fields. Its two key features are an iterativ improvement of the instantaneous Point Spread Functions (PSFs) extracted from each speckle frame and the (optional) simultaneous use of multiple reference stars. In this way, high signal-to-noise and accuracy can be achieved on the PSF for each short exposure, which results in sensitive, high-Strehl re- constructed images. We have tested our method with different instruments, on a range of targets, and from the N- to the I-band. In terms of PSF cosmetics, stability and Strehl r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.2261","kind":"arxiv","version":4},"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":"2026-05-18T02:00:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QaHR1IDZvKSjsKQOYCN39jkEMb1J16XwCsICIYOQitSjCUk6u0SjaLPydPE/6WGDwRwfngJLlrttCyL6hYUiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T18:24:55.085225Z"},"content_sha256":"b3afa82b506dc9906dc6e782a0b101d1d9fc974b55d5350eec5dd441b7ae6012","schema_version":"1.0","event_id":"sha256:b3afa82b506dc9906dc6e782a0b101d1d9fc974b55d5350eec5dd441b7ae6012"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TKWM26QATKMXT6LEJCLFP2BG73/bundle.json","state_url":"https://pith.science/pith/TKWM26QATKMXT6LEJCLFP2BG73/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TKWM26QATKMXT6LEJCLFP2BG73/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":"2026-06-02T18:24:55Z","links":{"resolver":"https://pith.science/pith/TKWM26QATKMXT6LEJCLFP2BG73","bundle":"https://pith.science/pith/TKWM26QATKMXT6LEJCLFP2BG73/bundle.json","state":"https://pith.science/pith/TKWM26QATKMXT6LEJCLFP2BG73/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TKWM26QATKMXT6LEJCLFP2BG73/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:TKWM26QATKMXT6LEJCLFP2BG73","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":"d44bdff30686f4c1adf311a1b35dc6414dc9d35a55346c658c61440053e007ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-11T03:51:03Z","title_canon_sha256":"048585b01cb5396fa8d4af79a3fd42f6585c20c3cb7e48d051ba3870fefdc8a7"},"schema_version":"1.0","source":{"id":"1110.2261","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.2261","created_at":"2026-05-18T02:00:13Z"},{"alias_kind":"arxiv_version","alias_value":"1110.2261v4","created_at":"2026-05-18T02:00:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.2261","created_at":"2026-05-18T02:00:13Z"},{"alias_kind":"pith_short_12","alias_value":"TKWM26QATKMX","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"TKWM26QATKMXT6LE","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"TKWM26QA","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:b3afa82b506dc9906dc6e782a0b101d1d9fc974b55d5350eec5dd441b7ae6012","target":"graph","created_at":"2026-05-18T02:00:13Z","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":"We present a method for speckle holography that is optimised for crowded fields. Its two key features are an iterativ improvement of the instantaneous Point Spread Functions (PSFs) extracted from each speckle frame and the (optional) simultaneous use of multiple reference stars. In this way, high signal-to-noise and accuracy can be achieved on the PSF for each short exposure, which results in sensitive, high-Strehl re- constructed images. We have tested our method with different instruments, on a range of targets, and from the N- to the I-band. In terms of PSF cosmetics, stability and Strehl r","authors_text":"A. Ghez, A. Perez-Garrido, J. H. V. Girard, L. Labadie, M. R. Morris, R. Rebolo, R. Schoedel, S. Yelda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-11T03:51:03Z","title":"Holographic Imaging of Crowded Fields: High Angular Resolution Imaging with Excellent Quality at Very Low Cost"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.2261","kind":"arxiv","version":4},"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":"sha256:092e40e72e79e413547816674833f2bc0768bdc268236038d3beadcac274f511","target":"record","created_at":"2026-05-18T02:00:13Z","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":"d44bdff30686f4c1adf311a1b35dc6414dc9d35a55346c658c61440053e007ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-10-11T03:51:03Z","title_canon_sha256":"048585b01cb5396fa8d4af79a3fd42f6585c20c3cb7e48d051ba3870fefdc8a7"},"schema_version":"1.0","source":{"id":"1110.2261","kind":"arxiv","version":4}},"canonical_sha256":"9aaccd7a009a9979f964489657e826fec4646c9aeecf7bd7991b3a350c75a9ff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9aaccd7a009a9979f964489657e826fec4646c9aeecf7bd7991b3a350c75a9ff","first_computed_at":"2026-05-18T02:00:13.903932Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:13.903932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rQIYDE9pAPLM8AGJtTggWi+A6/xky4fCtvz5XgYtBtooGt1S+GiH+fRtbK0/2V8RJbHVhuL0xUVcqXMq0l/NBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:13.904786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.2261","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:092e40e72e79e413547816674833f2bc0768bdc268236038d3beadcac274f511","sha256:b3afa82b506dc9906dc6e782a0b101d1d9fc974b55d5350eec5dd441b7ae6012"],"state_sha256":"704c612cc5df42875645cdb4479e349bb65248a1e109476a34ab2bf31a84c984"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MLJwhOe7QR2jOKFh5ZWiDoSfJXH1FqBy+KRN6812c+1GusbKlkgTLHD43QIBCwWPIebab2KPZJbw2HVjWAcNDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T18:24:55.087263Z","bundle_sha256":"4bcb22ca07c062f8f86eac99eb43f84f6224993545a858f8d86faaca9d8dc544"}}