{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZOPPRRCFFXLZL2ZRA5VOSTLYWZ","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":"3a92e484782202f2969c9bedc969f9f9fc7aad7451dd30344f70d9b4b31a4937","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-20T10:22:26Z","title_canon_sha256":"eca6af68dbb3cf2e0d701a619b0e5c19d7fded0e6839faddbdfb2afd031d5fec"},"schema_version":"1.0","source":{"id":"1712.07396","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07396","created_at":"2026-05-18T00:27:34Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07396v1","created_at":"2026-05-18T00:27:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07396","created_at":"2026-05-18T00:27:34Z"},{"alias_kind":"pith_short_12","alias_value":"ZOPPRRCFFXLZ","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZOPPRRCFFXLZL2ZR","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZOPPRRCF","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:9edafb251235dbe29126a8ad136308135215a2c434402e1e7ce713081f136b44","target":"graph","created_at":"2026-05-18T00:27:34Z","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":"Context: We describe the new SEPIA (Swedish-ESO PI Instrument for APEX) receiver, which was designed and built by the Group for Advanced Receiver Development (GARD), at Onsala Space Observatory (OSO) in collaboration with ESO. It was installed and commissioned at the APEX telescope during 2015 with an ALMA Band 5 receiver channel and updated with a new frequency channel (ALMA Band 9) in February 2016. Aims: This manuscript aims to provide, for observers who use the SEPIA receiver, a reference in terms of the hardware description, optics and performance as well as the commissioning results. Met","authors_text":"A. Ermakov, A. Koops, A. M. Baryshev, A. Pavolotsky, B. Billade, C. De Breuck, D. Meledin, E. De Beck, E. Sundin, F.M. Montenegro-Montes, H. Olofsson, H. Rashid, I. Lapkin, J. Adema, J. Barkhof, J. Conway, J.-P. P\\'erez-Beaupuits, K. Immer, K. Torstensson, M. E. Bekema, M. Fredrixon, M. Olberg, M. Strandberg, P. Aghdam, P. Bergman, P. Yagoubov, R. Hesper, S.-E. Ferm, S. Krause, S. Shafiee, T. Klein, V. Belitsky, V. Desmaris, W. Boland","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-20T10:22:26Z","title":"SEPIA - a new single pixel receiver at the APEX Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07396","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":"sha256:0afc9fba9f5a435a21361efa0e069ffd59369f9a81b437d13313bb9e75187feb","target":"record","created_at":"2026-05-18T00:27:34Z","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":"3a92e484782202f2969c9bedc969f9f9fc7aad7451dd30344f70d9b4b31a4937","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-12-20T10:22:26Z","title_canon_sha256":"eca6af68dbb3cf2e0d701a619b0e5c19d7fded0e6839faddbdfb2afd031d5fec"},"schema_version":"1.0","source":{"id":"1712.07396","kind":"arxiv","version":1}},"canonical_sha256":"cb9ef8c4452dd795eb31076ae94d78b679fc007412a5babd9435fda571573ea9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb9ef8c4452dd795eb31076ae94d78b679fc007412a5babd9435fda571573ea9","first_computed_at":"2026-05-18T00:27:34.573093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:34.573093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aURYyC3yLYb3f3G/3bVtWxjIw1DPSI3uyHyOrHRHnAlMtCiDOfs9QyhMqhPAfxDIZf0yuQGvZLn/XE5XFuIMCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:34.573724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.07396","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0afc9fba9f5a435a21361efa0e069ffd59369f9a81b437d13313bb9e75187feb","sha256:9edafb251235dbe29126a8ad136308135215a2c434402e1e7ce713081f136b44"],"state_sha256":"8ca9ef96b45cc60d544f641a90948e54c6e58c0efc5ba6bbc0df4e1779218a46"}