{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ILHGYD3WOQ5PWKR476X2SSIAIN","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":"763dc74f9eb47ebdef68bb41c972d334c0f469670bc4a30cb8b7d4c8a0f1059a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-16T22:00:22Z","title_canon_sha256":"3e2a2dac99db0e123efd2d03c667ef19978204b0b12746794feda0ec9060e4db"},"schema_version":"1.0","source":{"id":"1711.06329","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.06329","created_at":"2026-05-18T00:30:21Z"},{"alias_kind":"arxiv_version","alias_value":"1711.06329v1","created_at":"2026-05-18T00:30:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.06329","created_at":"2026-05-18T00:30:21Z"},{"alias_kind":"pith_short_12","alias_value":"ILHGYD3WOQ5P","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"ILHGYD3WOQ5PWKR4","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"ILHGYD3W","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:053f08ecb8af8b198299ab12c6f297173c4223122f5c27ed5b685b22dd2f2324","target":"graph","created_at":"2026-05-18T00:30:21Z","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":"In the present paper, we consider the optical design of a zoom system for the active refocusing in laser guide star wavefront sensors. The system is designed according to the specifications coming from the Extremely Large Telescope (ELT)-HARMONI instrument, the first-light, integral field spectrograph for the European (E)-ELT. The system must provide a refocusing of the laser guide as a function of telescope pointing and large decentring of the incoming beam. The system considers four moving lens groups, each of them being a doublet with one aspherical surface. The advantages and shortcomings ","authors_text":"Benoit Neichel, Eduard Muslimov, Emmanuel Hugot, Kjetil Dohlen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-16T22:00:22Z","title":"Design of pre-optics for laser guide star wavefront sensor for the ELT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.06329","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:fedf97016d81a4417c128c5c4a073b3b40222aa3d54abdf1728542ac5bbfa3b4","target":"record","created_at":"2026-05-18T00:30:21Z","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":"763dc74f9eb47ebdef68bb41c972d334c0f469670bc4a30cb8b7d4c8a0f1059a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-16T22:00:22Z","title_canon_sha256":"3e2a2dac99db0e123efd2d03c667ef19978204b0b12746794feda0ec9060e4db"},"schema_version":"1.0","source":{"id":"1711.06329","kind":"arxiv","version":1}},"canonical_sha256":"42ce6c0f76743afb2a3cffafa949004342572b182ad93240d164abc628c0fe31","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42ce6c0f76743afb2a3cffafa949004342572b182ad93240d164abc628c0fe31","first_computed_at":"2026-05-18T00:30:21.404889Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:21.404889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lKTh2MrUZ+swZMxaDsWdA1wsGQCTfO71YW7Dt3X/Y1mQUYKPpt++dUjCxVFLLXDLe8UHseI7Ab85gId6kUdnBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:21.405415Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.06329","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fedf97016d81a4417c128c5c4a073b3b40222aa3d54abdf1728542ac5bbfa3b4","sha256:053f08ecb8af8b198299ab12c6f297173c4223122f5c27ed5b685b22dd2f2324"],"state_sha256":"b1b04e65f9430512006ede73ad13ac0f97126ef3e1fb42bd6488467e66b744de"}