{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZD47UYLDNRDNLI55B4KNFD7OSY","short_pith_number":"pith:ZD47UYLD","canonical_record":{"source":{"id":"1206.1014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-05T18:22:05Z","cross_cats_sorted":[],"title_canon_sha256":"f499ceceac3a494b4864005263b35ce1b6f77bb0d48ae76c8e9f691eb9f89086","abstract_canon_sha256":"a0e7650e802711b403c0e245a48b83cb0f9a12af920579d8eb0767b9dbe789c7"},"schema_version":"1.0"},"canonical_sha256":"c8f9fa61636c46d5a3bd0f14d28fee961abf373d2becb5d3073c4d4e1e108617","source":{"kind":"arxiv","id":"1206.1014","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.1014","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"arxiv_version","alias_value":"1206.1014v1","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.1014","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"pith_short_12","alias_value":"ZD47UYLDNRDN","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZD47UYLDNRDNLI55","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZD47UYLD","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZD47UYLDNRDNLI55B4KNFD7OSY","target":"record","payload":{"canonical_record":{"source":{"id":"1206.1014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-05T18:22:05Z","cross_cats_sorted":[],"title_canon_sha256":"f499ceceac3a494b4864005263b35ce1b6f77bb0d48ae76c8e9f691eb9f89086","abstract_canon_sha256":"a0e7650e802711b403c0e245a48b83cb0f9a12af920579d8eb0767b9dbe789c7"},"schema_version":"1.0"},"canonical_sha256":"c8f9fa61636c46d5a3bd0f14d28fee961abf373d2becb5d3073c4d4e1e108617","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:07.499717Z","signature_b64":"njjG5I/p+vNY+PWhatc7FGerrp43l5FaKXEoNSbIumsu6PV7d1xmg40SBogsysgMQ2dIfympgplmDt2pzzfaBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8f9fa61636c46d5a3bd0f14d28fee961abf373d2becb5d3073c4d4e1e108617","last_reissued_at":"2026-05-18T01:57:07.498980Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:07.498980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.1014","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":"2026-05-18T01:57:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e5zqi0hb5+MO+fmC/YVo4VUmJapGAshvzNIlFhe+0nLiYPth99LYVb8LRdaZlHgvNF7XS/q9wm3lUSf0KifiAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:34:10.162719Z"},"content_sha256":"f225c0586017deaa5a298f932c73bea30e4a2fd9b796a46de3112b1d4ae8306a","schema_version":"1.0","event_id":"sha256:f225c0586017deaa5a298f932c73bea30e4a2fd9b796a46de3112b1d4ae8306a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZD47UYLDNRDNLI55B4KNFD7OSY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic liquid deformable mirrors for astronomical applications:Active correction of optical aberrations from lower-grade optics and support system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"E. F. Borra","submitted_at":"2012-06-05T18:22:05Z","abstract_excerpt":"Deformable mirrors are increasingly used in astronomy. However, they still are limited in stroke for active correction of high amplitude optical aberrations. Magnetic Liquid deformable mirrors (MLDMs) are a new technology that has advantages of high-amplitude deformations and low costs. In this paper we demonstrate extremely high strokes and inter-actuator strokes achievable by MLDMs which can be used in astronomical instrumentation. In particular, we consider the use of such a mirror to suggest an interesting application for the next generation of large telescopes. We present a prototype 91-a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.1014","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":"2026-05-18T01:57:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ogmnj3NCVvHuLohTQrq8YD1jsmNbmigHrHK5Ypt979iJ1zJDWiLo3cJn9XeaU9xj6acT0hTwg6PxY3MyL8dzAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:34:10.163055Z"},"content_sha256":"87008646f72d86f46b25ed65cd1288d2bac4c0a31b3f91bb068a49c1c48ef687","schema_version":"1.0","event_id":"sha256:87008646f72d86f46b25ed65cd1288d2bac4c0a31b3f91bb068a49c1c48ef687"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZD47UYLDNRDNLI55B4KNFD7OSY/bundle.json","state_url":"https://pith.science/pith/ZD47UYLDNRDNLI55B4KNFD7OSY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZD47UYLDNRDNLI55B4KNFD7OSY/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":"2026-05-28T13:34:10Z","links":{"resolver":"https://pith.science/pith/ZD47UYLDNRDNLI55B4KNFD7OSY","bundle":"https://pith.science/pith/ZD47UYLDNRDNLI55B4KNFD7OSY/bundle.json","state":"https://pith.science/pith/ZD47UYLDNRDNLI55B4KNFD7OSY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZD47UYLDNRDNLI55B4KNFD7OSY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZD47UYLDNRDNLI55B4KNFD7OSY","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":"a0e7650e802711b403c0e245a48b83cb0f9a12af920579d8eb0767b9dbe789c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-05T18:22:05Z","title_canon_sha256":"f499ceceac3a494b4864005263b35ce1b6f77bb0d48ae76c8e9f691eb9f89086"},"schema_version":"1.0","source":{"id":"1206.1014","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.1014","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"arxiv_version","alias_value":"1206.1014v1","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.1014","created_at":"2026-05-18T01:57:07Z"},{"alias_kind":"pith_short_12","alias_value":"ZD47UYLDNRDN","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZD47UYLDNRDNLI55","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZD47UYLD","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:87008646f72d86f46b25ed65cd1288d2bac4c0a31b3f91bb068a49c1c48ef687","target":"graph","created_at":"2026-05-18T01:57:07Z","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":"Deformable mirrors are increasingly used in astronomy. However, they still are limited in stroke for active correction of high amplitude optical aberrations. Magnetic Liquid deformable mirrors (MLDMs) are a new technology that has advantages of high-amplitude deformations and low costs. In this paper we demonstrate extremely high strokes and inter-actuator strokes achievable by MLDMs which can be used in astronomical instrumentation. In particular, we consider the use of such a mirror to suggest an interesting application for the next generation of large telescopes. We present a prototype 91-a","authors_text":"E. F. Borra","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-05T18:22:05Z","title":"Magnetic liquid deformable mirrors for astronomical applications:Active correction of optical aberrations from lower-grade optics and support system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.1014","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:f225c0586017deaa5a298f932c73bea30e4a2fd9b796a46de3112b1d4ae8306a","target":"record","created_at":"2026-05-18T01:57:07Z","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":"a0e7650e802711b403c0e245a48b83cb0f9a12af920579d8eb0767b9dbe789c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-05T18:22:05Z","title_canon_sha256":"f499ceceac3a494b4864005263b35ce1b6f77bb0d48ae76c8e9f691eb9f89086"},"schema_version":"1.0","source":{"id":"1206.1014","kind":"arxiv","version":1}},"canonical_sha256":"c8f9fa61636c46d5a3bd0f14d28fee961abf373d2becb5d3073c4d4e1e108617","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8f9fa61636c46d5a3bd0f14d28fee961abf373d2becb5d3073c4d4e1e108617","first_computed_at":"2026-05-18T01:57:07.498980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:07.498980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"njjG5I/p+vNY+PWhatc7FGerrp43l5FaKXEoNSbIumsu6PV7d1xmg40SBogsysgMQ2dIfympgplmDt2pzzfaBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:07.499717Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.1014","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f225c0586017deaa5a298f932c73bea30e4a2fd9b796a46de3112b1d4ae8306a","sha256:87008646f72d86f46b25ed65cd1288d2bac4c0a31b3f91bb068a49c1c48ef687"],"state_sha256":"627f73d8e3fc583c5084c2f547cad98a1a81ff727dfbd923c605f91419c00602"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZYI9XcJ/OGAlNuYOTo2dXIBBvBqhP/va1piIAY+FyA7cyTEPbhOg6VPIVZ1/7tLkogPUpbtjv+oxcfvpyKOHCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:34:10.165018Z","bundle_sha256":"cde6058c9cd34ab4f3ce9904fb0b9070133d3c3419f150c8378c0a9d87324adf"}}