{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:UUI5AHEFNVX4TN3ZBWRKIUSYOU","short_pith_number":"pith:UUI5AHEF","canonical_record":{"source":{"id":"1108.0905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-03T17:38:15Z","cross_cats_sorted":[],"title_canon_sha256":"4143f73e384d04b2923f1368bfc9fbc1f9ec191d708e0142dd55667efd06e3a9","abstract_canon_sha256":"107b6522bd6d6c96e4faf5a85f0502d4f2fc7640af4df79a0bcec2e926e53275"},"schema_version":"1.0"},"canonical_sha256":"a511d01c856d6fc9b7790da2a45258752da3877e44e9bc3f4bcc33563ea3396a","source":{"kind":"arxiv","id":"1108.0905","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.0905","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"arxiv_version","alias_value":"1108.0905v1","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.0905","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"pith_short_12","alias_value":"UUI5AHEFNVX4","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UUI5AHEFNVX4TN3Z","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UUI5AHEF","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:UUI5AHEFNVX4TN3ZBWRKIUSYOU","target":"record","payload":{"canonical_record":{"source":{"id":"1108.0905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-03T17:38:15Z","cross_cats_sorted":[],"title_canon_sha256":"4143f73e384d04b2923f1368bfc9fbc1f9ec191d708e0142dd55667efd06e3a9","abstract_canon_sha256":"107b6522bd6d6c96e4faf5a85f0502d4f2fc7640af4df79a0bcec2e926e53275"},"schema_version":"1.0"},"canonical_sha256":"a511d01c856d6fc9b7790da2a45258752da3877e44e9bc3f4bcc33563ea3396a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:03.409979Z","signature_b64":"68bkt7LHlQ8xDe26Vcinje9tqWeT6jxJwxftghkvAD2UC3N3AdodTZUgpkLQ1VX5UyDbp8bYIO+o+mSroTdlAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a511d01c856d6fc9b7790da2a45258752da3877e44e9bc3f4bcc33563ea3396a","last_reissued_at":"2026-05-18T02:01:03.409252Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:03.409252Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.0905","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":"2026-05-18T02:01:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aHUElUgxFgJHf4T8CFl5At/EPvjjYmfki6ytN0trc12Nzu/+GbIh4vPl+HypSfEV9WI07N10sTExtq+jQfZeCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T21:00:53.264723Z"},"content_sha256":"abd12932120517ca0f269d33b3262b6a8e13a094ff8788d8cbc33dad84244b2f","schema_version":"1.0","event_id":"sha256:abd12932120517ca0f269d33b3262b6a8e13a094ff8788d8cbc33dad84244b2f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:UUI5AHEFNVX4TN3ZBWRKIUSYOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A benchmark for multi-conjugated AO: VLT-MAD observations of the young massive cluster Trumpler 14","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Stolte, B. Rochau, E. Marchetti, F. Hormuth, M. Gennaro, N. Da Rio, P. Amico, T. Henning, W. Brandner","submitted_at":"2011-08-03T17:38:15Z","abstract_excerpt":"MAD is the first multi-conjugated adaptive optics system at the VLT. We present H and Ks observations of the young massive cluster Trumpler 14 revealing the power of MCAO systems by providing a homogeneous Strehl ratio over a large field of view. Mean Strehl ratios of 6.0 and 5.9 per cent with maximum Strehl ratios of 9.8 and 12.6 per cent in H and Ks, respectively, show significant improvement of the spatial PSF stability compared to single-conjugated adaptive optics systems. Photometry of our observations cover a dynamic range of ~10 mag including 2-3 times more sources than comparable seein"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.0905","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":"2026-05-18T02:01:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LW4zuUN153F2QX+LGYkLH1BPhUf+pkQrEmtCKUPiJf2wsNNGmGzh5+n6Dsivc+kZGPX/6L7tRBAwGbRobof8Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T21:00:53.265076Z"},"content_sha256":"737aaa90af9daacdd3d5132c329c69cc1b5ba5c2ae3fcfd41c1c3e888eed5511","schema_version":"1.0","event_id":"sha256:737aaa90af9daacdd3d5132c329c69cc1b5ba5c2ae3fcfd41c1c3e888eed5511"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU/bundle.json","state_url":"https://pith.science/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU/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":"2026-05-19T21:00:53Z","links":{"resolver":"https://pith.science/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU","bundle":"https://pith.science/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU/bundle.json","state":"https://pith.science/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UUI5AHEFNVX4TN3ZBWRKIUSYOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:UUI5AHEFNVX4TN3ZBWRKIUSYOU","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":"107b6522bd6d6c96e4faf5a85f0502d4f2fc7640af4df79a0bcec2e926e53275","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-03T17:38:15Z","title_canon_sha256":"4143f73e384d04b2923f1368bfc9fbc1f9ec191d708e0142dd55667efd06e3a9"},"schema_version":"1.0","source":{"id":"1108.0905","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.0905","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"arxiv_version","alias_value":"1108.0905v1","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.0905","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"pith_short_12","alias_value":"UUI5AHEFNVX4","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UUI5AHEFNVX4TN3Z","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UUI5AHEF","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:737aaa90af9daacdd3d5132c329c69cc1b5ba5c2ae3fcfd41c1c3e888eed5511","target":"graph","created_at":"2026-05-18T02:01:03Z","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":"MAD is the first multi-conjugated adaptive optics system at the VLT. We present H and Ks observations of the young massive cluster Trumpler 14 revealing the power of MCAO systems by providing a homogeneous Strehl ratio over a large field of view. Mean Strehl ratios of 6.0 and 5.9 per cent with maximum Strehl ratios of 9.8 and 12.6 per cent in H and Ks, respectively, show significant improvement of the spatial PSF stability compared to single-conjugated adaptive optics systems. Photometry of our observations cover a dynamic range of ~10 mag including 2-3 times more sources than comparable seein","authors_text":"A. Stolte, B. Rochau, E. Marchetti, F. Hormuth, M. Gennaro, N. Da Rio, P. Amico, T. Henning, W. Brandner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-03T17:38:15Z","title":"A benchmark for multi-conjugated AO: VLT-MAD observations of the young massive cluster Trumpler 14"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.0905","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:abd12932120517ca0f269d33b3262b6a8e13a094ff8788d8cbc33dad84244b2f","target":"record","created_at":"2026-05-18T02:01:03Z","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":"107b6522bd6d6c96e4faf5a85f0502d4f2fc7640af4df79a0bcec2e926e53275","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2011-08-03T17:38:15Z","title_canon_sha256":"4143f73e384d04b2923f1368bfc9fbc1f9ec191d708e0142dd55667efd06e3a9"},"schema_version":"1.0","source":{"id":"1108.0905","kind":"arxiv","version":1}},"canonical_sha256":"a511d01c856d6fc9b7790da2a45258752da3877e44e9bc3f4bcc33563ea3396a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a511d01c856d6fc9b7790da2a45258752da3877e44e9bc3f4bcc33563ea3396a","first_computed_at":"2026-05-18T02:01:03.409252Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:03.409252Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"68bkt7LHlQ8xDe26Vcinje9tqWeT6jxJwxftghkvAD2UC3N3AdodTZUgpkLQ1VX5UyDbp8bYIO+o+mSroTdlAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:03.409979Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.0905","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abd12932120517ca0f269d33b3262b6a8e13a094ff8788d8cbc33dad84244b2f","sha256:737aaa90af9daacdd3d5132c329c69cc1b5ba5c2ae3fcfd41c1c3e888eed5511"],"state_sha256":"01d0f2857de2744778063e6f9a6cfdb607472911f3070cb5361e61fa6dca9a7a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RObcBUhzaN/z+MXQPkZxZr2Yj0L+lwwtyHuhtn95ErqQaKjWAc0KkJt+DnQktHIZ2lhyyZLTjA8sroj8o6zTDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T21:00:53.267287Z","bundle_sha256":"a533b0ce4762e7707562bfe505a8e36211edf8554a716e7ae3c5b46b6c24547d"}}