{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:JN4FNQU3EKNHVRZZ52TP6GBIMC","short_pith_number":"pith:JN4FNQU3","canonical_record":{"source":{"id":"1608.01690","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-04T20:18:04Z","cross_cats_sorted":[],"title_canon_sha256":"a18f31216b4772e381f3a42210a1a9cd06fd5998156e80699016d4cd6406fd19","abstract_canon_sha256":"946767027b7133534a5dbd221bb0d3c32bb1314749cbd6b46dffbeecc4bef5d1"},"schema_version":"1.0"},"canonical_sha256":"4b7856c29b229a7ac739eea6ff18286091390f9435cdf10bbad65e67268033f6","source":{"kind":"arxiv","id":"1608.01690","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.01690","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"arxiv_version","alias_value":"1608.01690v1","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.01690","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"pith_short_12","alias_value":"JN4FNQU3EKNH","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"JN4FNQU3EKNHVRZZ","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"JN4FNQU3","created_at":"2026-05-18T12:30:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:JN4FNQU3EKNHVRZZ52TP6GBIMC","target":"record","payload":{"canonical_record":{"source":{"id":"1608.01690","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-04T20:18:04Z","cross_cats_sorted":[],"title_canon_sha256":"a18f31216b4772e381f3a42210a1a9cd06fd5998156e80699016d4cd6406fd19","abstract_canon_sha256":"946767027b7133534a5dbd221bb0d3c32bb1314749cbd6b46dffbeecc4bef5d1"},"schema_version":"1.0"},"canonical_sha256":"4b7856c29b229a7ac739eea6ff18286091390f9435cdf10bbad65e67268033f6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:12.778087Z","signature_b64":"+h2EBhTOuprbZtL/MM1Z4gKyTGTA9QfrGYOw4VTJhp9WdqjXUnfKeJ8PNxJ9IOS8PRffFB6yndC8NLetwHhKBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b7856c29b229a7ac739eea6ff18286091390f9435cdf10bbad65e67268033f6","last_reissued_at":"2026-05-18T00:55:12.777521Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:12.777521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.01690","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":"2026-05-18T00:55:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NklovtvbSk4Y7YnfVjFa2Ke0w2xbD29lSvNA447K/HTqa/z8LOg0svF/h/d9lr50y3qvRVq3kMOsdbmk/LCOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:39:02.276106Z"},"content_sha256":"0e59554673014dc232b36dc31a4bc01cad2a20fc6351926a4c5bf18a206b4dde","schema_version":"1.0","event_id":"sha256:0e59554673014dc232b36dc31a4bc01cad2a20fc6351926a4c5bf18a206b4dde"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:JN4FNQU3EKNHVRZZ52TP6GBIMC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Infrared Imaging Spectrograph (IRIS) for TMT: the ADC optical design","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrew C. Phillips, Anna M. Moore, James E. Larkin, Ryuji Suzuki, Shelley A. Wright, Toshihiro Tsuzuki, Yutaka Hayano","submitted_at":"2016-08-04T20:18:04Z","abstract_excerpt":"We present the current optical design for the IRIS Atmospheric Dispersion Corrector (ADC). The ADC is designed for residual dispersions less than ~1 mas across a given passband at elevations of 25 degrees. Since the last report, the area of the IRIS Imager has increased by a factor of four, and the pupil size has increased from 75 to 90mm, both of which contribute to challenges with the design. Several considerations have led to the current design: residual dispersion, amount of introduced distortion, glass transmission, glass availability, and pupil displacement. In particular it was found th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.01690","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":"2026-05-18T00:55:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aKAvknNJAFxALKWk1NABkZB24QmXm0dRc47xEKnfUx5IoBX2AhKeZ8LFNxl2eAGqi9TiYLv5/WPXkEl9sAPRDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:39:02.276779Z"},"content_sha256":"1fc434a696154e7ec5c6c3aa4b916dc12d5889fc3b563d6c5e8287e622b7b3c9","schema_version":"1.0","event_id":"sha256:1fc434a696154e7ec5c6c3aa4b916dc12d5889fc3b563d6c5e8287e622b7b3c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC/bundle.json","state_url":"https://pith.science/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC/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":"2026-05-27T05:39:02Z","links":{"resolver":"https://pith.science/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC","bundle":"https://pith.science/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC/bundle.json","state":"https://pith.science/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JN4FNQU3EKNHVRZZ52TP6GBIMC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:JN4FNQU3EKNHVRZZ52TP6GBIMC","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":"946767027b7133534a5dbd221bb0d3c32bb1314749cbd6b46dffbeecc4bef5d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-04T20:18:04Z","title_canon_sha256":"a18f31216b4772e381f3a42210a1a9cd06fd5998156e80699016d4cd6406fd19"},"schema_version":"1.0","source":{"id":"1608.01690","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.01690","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"arxiv_version","alias_value":"1608.01690v1","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.01690","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"pith_short_12","alias_value":"JN4FNQU3EKNH","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"JN4FNQU3EKNHVRZZ","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"JN4FNQU3","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:1fc434a696154e7ec5c6c3aa4b916dc12d5889fc3b563d6c5e8287e622b7b3c9","target":"graph","created_at":"2026-05-18T00:55:12Z","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 the current optical design for the IRIS Atmospheric Dispersion Corrector (ADC). The ADC is designed for residual dispersions less than ~1 mas across a given passband at elevations of 25 degrees. Since the last report, the area of the IRIS Imager has increased by a factor of four, and the pupil size has increased from 75 to 90mm, both of which contribute to challenges with the design. Several considerations have led to the current design: residual dispersion, amount of introduced distortion, glass transmission, glass availability, and pupil displacement. In particular it was found th","authors_text":"Andrew C. Phillips, Anna M. Moore, James E. Larkin, Ryuji Suzuki, Shelley A. Wright, Toshihiro Tsuzuki, Yutaka Hayano","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-04T20:18:04Z","title":"The Infrared Imaging Spectrograph (IRIS) for TMT: the ADC optical design"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.01690","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":"sha256:0e59554673014dc232b36dc31a4bc01cad2a20fc6351926a4c5bf18a206b4dde","target":"record","created_at":"2026-05-18T00:55:12Z","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":"946767027b7133534a5dbd221bb0d3c32bb1314749cbd6b46dffbeecc4bef5d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-04T20:18:04Z","title_canon_sha256":"a18f31216b4772e381f3a42210a1a9cd06fd5998156e80699016d4cd6406fd19"},"schema_version":"1.0","source":{"id":"1608.01690","kind":"arxiv","version":1}},"canonical_sha256":"4b7856c29b229a7ac739eea6ff18286091390f9435cdf10bbad65e67268033f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b7856c29b229a7ac739eea6ff18286091390f9435cdf10bbad65e67268033f6","first_computed_at":"2026-05-18T00:55:12.777521Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:12.777521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+h2EBhTOuprbZtL/MM1Z4gKyTGTA9QfrGYOw4VTJhp9WdqjXUnfKeJ8PNxJ9IOS8PRffFB6yndC8NLetwHhKBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:12.778087Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.01690","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e59554673014dc232b36dc31a4bc01cad2a20fc6351926a4c5bf18a206b4dde","sha256:1fc434a696154e7ec5c6c3aa4b916dc12d5889fc3b563d6c5e8287e622b7b3c9"],"state_sha256":"949de328a794472852e10219fef6126a7f7fbac745201097c460b405535cad92"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kgU9FoWvsGZmDW1WAsNS94T8lzphbKX0Lhe3zPr2VT005DcDcl7uNOOMnNaVxRXQNNQ7EjyL2kaebl67jTG7BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T05:39:02.280437Z","bundle_sha256":"70c00c6ae105d493ce84aa3a1852a1defd37771c009e7d32888bc29775ddd440"}}