{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:RCCD74H2NJLSZF2ZJJJPXE5Q65","short_pith_number":"pith:RCCD74H2","canonical_record":{"source":{"id":"0902.2335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-13T16:59:34Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"828394009209933dd2ec8c43786759df2906fb979019ccea71ac495c2f3e6487","abstract_canon_sha256":"8972fd4b3e4e9ee509b8bf2d756683e553432ccc549df6ae7991cd5550eb04e7"},"schema_version":"1.0"},"canonical_sha256":"88843ff0fa6a572c97594a52fb93b0f77bc2cd263faf6baff7a8d4b47014598a","source":{"kind":"arxiv","id":"0902.2335","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.2335","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"arxiv_version","alias_value":"0902.2335v1","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.2335","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"pith_short_12","alias_value":"RCCD74H2NJLS","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"RCCD74H2NJLSZF2Z","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"RCCD74H2","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:RCCD74H2NJLSZF2ZJJJPXE5Q65","target":"record","payload":{"canonical_record":{"source":{"id":"0902.2335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-13T16:59:34Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"828394009209933dd2ec8c43786759df2906fb979019ccea71ac495c2f3e6487","abstract_canon_sha256":"8972fd4b3e4e9ee509b8bf2d756683e553432ccc549df6ae7991cd5550eb04e7"},"schema_version":"1.0"},"canonical_sha256":"88843ff0fa6a572c97594a52fb93b0f77bc2cd263faf6baff7a8d4b47014598a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:16.623801Z","signature_b64":"w7KPDyjmlgmeOe5Uou6r2cop2LUTWm0EflR82RXtDS8aAqjWDit96gzQdQYW9VctDt6bTvvPTFk3JzS9HSjdBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88843ff0fa6a572c97594a52fb93b0f77bc2cd263faf6baff7a8d4b47014598a","last_reissued_at":"2026-05-18T04:29:16.623273Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:16.623273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0902.2335","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":"2026-05-18T04:29:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jf/fSmNu0BCRYk4eQbzV3wUIOkT/x0/tx4bvzfnnAkKjVBrrrqjhg1oDm/YoDtmyypBLr4qTjxxliipsJv9rDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T14:43:41.758663Z"},"content_sha256":"d6e04e080770de324418690fcc8d94920364735cf73e125a0ea274473259bb98","schema_version":"1.0","event_id":"sha256:d6e04e080770de324418690fcc8d94920364735cf73e125a0ea274473259bb98"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:RCCD74H2NJLSZF2ZJJJPXE5Q65","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The AMiBA Hexapod Telescope Mount","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"(10) CMA, (11) ESO Headquarters Garching), (2) Australia Telescope National Facility, 3), (3) Department of Physics, 4), (4) Leung center for Cosmology, 5), (5) Harvard-Smithsonian Center for Astrophysics, (6) Vertex Antennentechnik GmbH, 7), (7) Department of Physics, (8) Department of Physics, (9) National Radio Astronomy Observatory, Astrophysics, Bob Romeo (10) ((1) Academia Sinica, Center for Theoretical Sciences, Chao-Te Li (1), Chia-Hao Chang (1), Chih-Chiang Han (1), Chih-Wei Locutus Huang (3, Derek Kubo (1), Fabiola Ibanez-Romano (1), Ferdinand Patt (11), Fu-Cheng Wang (3, Guillaume Chereau (1), Guo-Chin Liu (1, Hiroaki Nishioka (1), Homin Jiang (1), Institute of Astronomy, Institute of Astrophysics, Jiun-Huei Proty Wu (3, Kai-Yang Lin (1, Katy Lancaster (8), Keiichi Umetsu (1, Ke-Jung Chen (1), Klaus Willmeroth (6), Konrad Pausch (6), Kwok Yung Lo (9), Mark Birkinshaw (8), Michael Kesteven (2), Ming-Tang Chen (1), National Taiwan University, Pablo Altamirano (1), Particle Astrophysics, Patrick M. Koch (1), Paul T. P. Ho (1, Peter Oshiro (1), Philippe Raffin (1), Pierre Martin-Cocher (1), Robert N.Martin (10), Sandor M. Molnar (1), Shu-Hao Chang (1), Su-Wei Chang (1), Tamkang University, Ta-Shun Wei (1), Tzihong Chiueh (3), University of Bristol, Yau-De Huang (1), Yu-Wei Liao (3","submitted_at":"2009-02-13T16:59:34Z","abstract_excerpt":"AMiBA is the largest hexapod astronomical telescope in current operation. We present a description of this novel hexapod mount with its main mechanical components -- the support cone, universal joints, jack screws, and platform -- and outline the control system with the pointing model and the operating modes that are supported. The AMiBA hexapod mount performance is verified based on optical pointing tests and platform photogrammetry measurements. The photogrammetry results show that the deformations in the inner part of the platform are less than 120 micron rms. This is negligible for optical"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.2335","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":"2026-05-18T04:29:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TDCc0MtK9gfwIdCGG3iujqkjYBCAvRgLSvnvlmy3SV0g9YcC2Lxevs7A5AS8v4NrCfDzxqr9jKSSxpounj5jDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T14:43:41.759027Z"},"content_sha256":"707547a9d8826f9c9ed37b178865ce1062b8d1c3b4cb895596bcb5db7f2cf06f","schema_version":"1.0","event_id":"sha256:707547a9d8826f9c9ed37b178865ce1062b8d1c3b4cb895596bcb5db7f2cf06f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65/bundle.json","state_url":"https://pith.science/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65/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":"2026-05-20T14:43:41Z","links":{"resolver":"https://pith.science/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65","bundle":"https://pith.science/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65/bundle.json","state":"https://pith.science/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RCCD74H2NJLSZF2ZJJJPXE5Q65/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:RCCD74H2NJLSZF2ZJJJPXE5Q65","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":"8972fd4b3e4e9ee509b8bf2d756683e553432ccc549df6ae7991cd5550eb04e7","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-13T16:59:34Z","title_canon_sha256":"828394009209933dd2ec8c43786759df2906fb979019ccea71ac495c2f3e6487"},"schema_version":"1.0","source":{"id":"0902.2335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.2335","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"arxiv_version","alias_value":"0902.2335v1","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.2335","created_at":"2026-05-18T04:29:16Z"},{"alias_kind":"pith_short_12","alias_value":"RCCD74H2NJLS","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"RCCD74H2NJLSZF2Z","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"RCCD74H2","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:707547a9d8826f9c9ed37b178865ce1062b8d1c3b4cb895596bcb5db7f2cf06f","target":"graph","created_at":"2026-05-18T04:29:16Z","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":"AMiBA is the largest hexapod astronomical telescope in current operation. We present a description of this novel hexapod mount with its main mechanical components -- the support cone, universal joints, jack screws, and platform -- and outline the control system with the pointing model and the operating modes that are supported. The AMiBA hexapod mount performance is verified based on optical pointing tests and platform photogrammetry measurements. The photogrammetry results show that the deformations in the inner part of the platform are less than 120 micron rms. This is negligible for optical","authors_text":"(10) CMA, (11) ESO Headquarters Garching), (2) Australia Telescope National Facility, 3), (3) Department of Physics, 4), (4) Leung center for Cosmology, 5), (5) Harvard-Smithsonian Center for Astrophysics, (6) Vertex Antennentechnik GmbH, 7), (7) Department of Physics, (8) Department of Physics, (9) National Radio Astronomy Observatory, Astrophysics, Bob Romeo (10) ((1) Academia Sinica, Center for Theoretical Sciences, Chao-Te Li (1), Chia-Hao Chang (1), Chih-Chiang Han (1), Chih-Wei Locutus Huang (3, Derek Kubo (1), Fabiola Ibanez-Romano (1), Ferdinand Patt (11), Fu-Cheng Wang (3, Guillaume Chereau (1), Guo-Chin Liu (1, Hiroaki Nishioka (1), Homin Jiang (1), Institute of Astronomy, Institute of Astrophysics, Jiun-Huei Proty Wu (3, Kai-Yang Lin (1, Katy Lancaster (8), Keiichi Umetsu (1, Ke-Jung Chen (1), Klaus Willmeroth (6), Konrad Pausch (6), Kwok Yung Lo (9), Mark Birkinshaw (8), Michael Kesteven (2), Ming-Tang Chen (1), National Taiwan University, Pablo Altamirano (1), Particle Astrophysics, Patrick M. Koch (1), Paul T. P. Ho (1, Peter Oshiro (1), Philippe Raffin (1), Pierre Martin-Cocher (1), Robert N.Martin (10), Sandor M. Molnar (1), Shu-Hao Chang (1), Su-Wei Chang (1), Tamkang University, Ta-Shun Wei (1), Tzihong Chiueh (3), University of Bristol, Yau-De Huang (1), Yu-Wei Liao (3","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-13T16:59:34Z","title":"The AMiBA Hexapod Telescope Mount"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.2335","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:d6e04e080770de324418690fcc8d94920364735cf73e125a0ea274473259bb98","target":"record","created_at":"2026-05-18T04:29:16Z","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":"8972fd4b3e4e9ee509b8bf2d756683e553432ccc549df6ae7991cd5550eb04e7","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-13T16:59:34Z","title_canon_sha256":"828394009209933dd2ec8c43786759df2906fb979019ccea71ac495c2f3e6487"},"schema_version":"1.0","source":{"id":"0902.2335","kind":"arxiv","version":1}},"canonical_sha256":"88843ff0fa6a572c97594a52fb93b0f77bc2cd263faf6baff7a8d4b47014598a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88843ff0fa6a572c97594a52fb93b0f77bc2cd263faf6baff7a8d4b47014598a","first_computed_at":"2026-05-18T04:29:16.623273Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:16.623273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w7KPDyjmlgmeOe5Uou6r2cop2LUTWm0EflR82RXtDS8aAqjWDit96gzQdQYW9VctDt6bTvvPTFk3JzS9HSjdBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:16.623801Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.2335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6e04e080770de324418690fcc8d94920364735cf73e125a0ea274473259bb98","sha256:707547a9d8826f9c9ed37b178865ce1062b8d1c3b4cb895596bcb5db7f2cf06f"],"state_sha256":"8213650cca62c5dfc9bb32647fc0349763eb9ff46b9eb704059eeedaf24acc67"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rQ4vK7EKV7CDBDgV4LGpTa6UQ5vwP9ttSM1WyYbCbm4zu5Y4Wgjqu6hNpm95chGYBjL1HoOr6pnaZk+1R11GCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T14:43:41.761040Z","bundle_sha256":"e3cc167eb664f5c465ee810ea04a2f09e84bbb84714ab66a078d454ccddb2761"}}