{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:BPEKD2LLIFE53ZHLVXMFMVGQR5","short_pith_number":"pith:BPEKD2LL","canonical_record":{"source":{"id":"2206.00684","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-01T18:00:17Z","cross_cats_sorted":[],"title_canon_sha256":"30df7ea777f7474c393aab7b39132b6649332bb11fd3c6d820a01c1a6c19a23a","abstract_canon_sha256":"cf8b1f66d8e85c0d38c1877cad4ac8160ce57d4abcecc8613ccdc7e183869a2e"},"schema_version":"1.0"},"canonical_sha256":"0bc8a1e96b4149dde4ebadd85654d08f4f95b141590d246a6f5af5af88647aef","source":{"kind":"arxiv","id":"2206.00684","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.00684","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"arxiv_version","alias_value":"2206.00684v2","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.00684","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"pith_short_12","alias_value":"BPEKD2LLIFE5","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"pith_short_16","alias_value":"BPEKD2LLIFE53ZHL","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"pith_short_8","alias_value":"BPEKD2LL","created_at":"2026-07-05T04:57:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:BPEKD2LLIFE53ZHLVXMFMVGQR5","target":"record","payload":{"canonical_record":{"source":{"id":"2206.00684","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-01T18:00:17Z","cross_cats_sorted":[],"title_canon_sha256":"30df7ea777f7474c393aab7b39132b6649332bb11fd3c6d820a01c1a6c19a23a","abstract_canon_sha256":"cf8b1f66d8e85c0d38c1877cad4ac8160ce57d4abcecc8613ccdc7e183869a2e"},"schema_version":"1.0"},"canonical_sha256":"0bc8a1e96b4149dde4ebadd85654d08f4f95b141590d246a6f5af5af88647aef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:57:10.813778Z","signature_b64":"JPce+a8XVPqJEtccO6L70LOirICS7Ag8l4ruv+9WGFWZNmcZ1GdpJL77bOwdJtU3gyee2hCZ7RvtiDh7Xcc4BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0bc8a1e96b4149dde4ebadd85654d08f4f95b141590d246a6f5af5af88647aef","last_reissued_at":"2026-07-05T04:57:10.813278Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:57:10.813278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.00684","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:57:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"18XfvIw3A4EKtJ9Rhy89Z+eVrjskagbF+t42zqRwWKmFHD5hXOYlrZlQyfOfyu123Zu/s30KUz3SjV221FtSCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T23:24:36.720892Z"},"content_sha256":"9a659d6a0005a429cc3eab96fc5bdfd1ed8eb1e4598ae46a2006e8fc59c3313d","schema_version":"1.0","event_id":"sha256:9a659d6a0005a429cc3eab96fc5bdfd1ed8eb1e4598ae46a2006e8fc59c3313d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:BPEKD2LLIFE53ZHLVXMFMVGQR5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Light for GRAVITY Wide: Large Separation Fringe Tracking for the Very Large Telescope Interferometer","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Amorim, A. Bigioli, A. Delboulb\\'e, A. Drescher, A. Eckart, A. Kaufer, A. Marcotto, A. M\\'erand, A. Sevin, A. Spang, A. Young, B. Courtney-Barrer, C. Bailet, C. \\'Edouard, C. Gouvret, C. Rau, C. Straubmeier, D. Defr\\`ere, D. Lutz, D. Maurel, E. Garcia, E. Gendron, E. Jacqmart, E. Stadler, E. Sturm, E. Wieprecht, E. Wiezorrek, F. Allouche, F. Delplancke, F. Eisenhauer, F. Gao, F. Gont\\'e, F. Hau{\\ss}mann, F. Mang, F. Millour, F. Soulez, F. Vincent, F. Widmann, G. Bourdarot, G. Finger, G. Hei{\\ss}el, G. Perrin, GRAVITY+ Collaboration: R. Abuter, G. Zins, H. Bonnet, H. Feuchtgruber, H. Korhonen, H. Nowacki, J.-B. Le Bouquin, J. Leftley, J.-P. Berger, J.P. Gil, J. Schubert, J. Shangguan, J. Stadler, J. Woillez, K. Perraut, K.R.W. Tristram, L. Jochum, L. Jocou, L.J. Tacconi, L. Kreidberg, L. Pallanca, M. Baub\\\"ock, M. Fabricius, M. Hartl, M. Horrobin, M.L. Bolzer, M. Nowak, M. Salman, M. Sch\\\"oller, N. Hubin, N.M. F\\\"orster Schreiber, N. More, N. Pourr\\'e, N. Schuhler, O. Boebion, O. Lai, O. Pfuhl, P. Berio, P. Bourget, P. Garcia, P. Guajardo, P. Kervella, P. L\\'ena, P.T. de Zeeuw, R. Davies, R. Dembet, R. Genzel, R. Laugier, R. Petrov, S. Gillessen, S. Guieu, S. Hippler, S. H\\\"onig, S. Lacour, S. Lagarde, S. Oberti, S. Rabien, S. Robbe-Dubois, S. Rochat, S. Scheithauer, S. Uysal, S. von Fellenberg, S. Yazici, T. Gomes, Th. Henning, T. Ott, T. Paumard, T. Shimizu, V. Lapeyr\\`ere, W. Brandner, X. Haubois, Y. Cl\\'enet, Y. Dallilar","submitted_at":"2022-06-01T18:00:17Z","abstract_excerpt":"GRAVITY+ is the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) with wide-separation fringe tracking, new adaptive optics, and laser guide stars on all four 8~m Unit Telescopes (UTs), for ever fainter, all-sky, high contrast, milliarcsecond interferometry. Here we present the design and first results of the first phase of GRAVITY+, called GRAVITY Wide. GRAVITY Wide combines the dual-beam capabilities of the VLTI and the GRAVITY instrument to increase the maximum separation between the science target and the reference star from 2 arcseconds with the 8 m UTs up to several 1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.00684","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2206.00684/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:57:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xe5y8ruoeSM9353hQT/r3gZsXpGPLkjrb2gMsrrdar3HuTPh3TWzk2xjWhaD7SP1pypJX1TxXJdFKIyJ1E90CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T23:24:36.721273Z"},"content_sha256":"4464b98b254176becbbb6712be4df7595ebeca983d77094c2a8a10f0d59c41b6","schema_version":"1.0","event_id":"sha256:4464b98b254176becbbb6712be4df7595ebeca983d77094c2a8a10f0d59c41b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5/bundle.json","state_url":"https://pith.science/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5/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":"2026-07-06T23:24:36Z","links":{"resolver":"https://pith.science/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5","bundle":"https://pith.science/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5/bundle.json","state":"https://pith.science/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BPEKD2LLIFE53ZHLVXMFMVGQR5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:BPEKD2LLIFE53ZHLVXMFMVGQR5","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":"cf8b1f66d8e85c0d38c1877cad4ac8160ce57d4abcecc8613ccdc7e183869a2e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-01T18:00:17Z","title_canon_sha256":"30df7ea777f7474c393aab7b39132b6649332bb11fd3c6d820a01c1a6c19a23a"},"schema_version":"1.0","source":{"id":"2206.00684","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.00684","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"arxiv_version","alias_value":"2206.00684v2","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.00684","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"pith_short_12","alias_value":"BPEKD2LLIFE5","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"pith_short_16","alias_value":"BPEKD2LLIFE53ZHL","created_at":"2026-07-05T04:57:10Z"},{"alias_kind":"pith_short_8","alias_value":"BPEKD2LL","created_at":"2026-07-05T04:57:10Z"}],"graph_snapshots":[{"event_id":"sha256:4464b98b254176becbbb6712be4df7595ebeca983d77094c2a8a10f0d59c41b6","target":"graph","created_at":"2026-07-05T04:57:10Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2206.00684/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"GRAVITY+ is the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) with wide-separation fringe tracking, new adaptive optics, and laser guide stars on all four 8~m Unit Telescopes (UTs), for ever fainter, all-sky, high contrast, milliarcsecond interferometry. Here we present the design and first results of the first phase of GRAVITY+, called GRAVITY Wide. GRAVITY Wide combines the dual-beam capabilities of the VLTI and the GRAVITY instrument to increase the maximum separation between the science target and the reference star from 2 arcseconds with the 8 m UTs up to several 1","authors_text":"A. Amorim, A. Bigioli, A. Delboulb\\'e, A. Drescher, A. Eckart, A. Kaufer, A. Marcotto, A. M\\'erand, A. Sevin, A. Spang, A. Young, B. Courtney-Barrer, C. Bailet, C. \\'Edouard, C. Gouvret, C. Rau, C. Straubmeier, D. Defr\\`ere, D. Lutz, D. Maurel, E. Garcia, E. Gendron, E. Jacqmart, E. Stadler, E. Sturm, E. Wieprecht, E. Wiezorrek, F. Allouche, F. Delplancke, F. Eisenhauer, F. Gao, F. Gont\\'e, F. Hau{\\ss}mann, F. Mang, F. Millour, F. Soulez, F. Vincent, F. Widmann, G. Bourdarot, G. Finger, G. Hei{\\ss}el, G. Perrin, GRAVITY+ Collaboration: R. Abuter, G. Zins, H. Bonnet, H. Feuchtgruber, H. Korhonen, H. Nowacki, J.-B. Le Bouquin, J. Leftley, J.-P. Berger, J.P. Gil, J. Schubert, J. Shangguan, J. Stadler, J. Woillez, K. Perraut, K.R.W. Tristram, L. Jochum, L. Jocou, L.J. Tacconi, L. Kreidberg, L. Pallanca, M. Baub\\\"ock, M. Fabricius, M. Hartl, M. Horrobin, M.L. Bolzer, M. Nowak, M. Salman, M. Sch\\\"oller, N. Hubin, N.M. F\\\"orster Schreiber, N. More, N. Pourr\\'e, N. Schuhler, O. Boebion, O. Lai, O. Pfuhl, P. Berio, P. Bourget, P. Garcia, P. Guajardo, P. Kervella, P. L\\'ena, P.T. de Zeeuw, R. Davies, R. Dembet, R. Genzel, R. Laugier, R. Petrov, S. Gillessen, S. Guieu, S. Hippler, S. H\\\"onig, S. Lacour, S. Lagarde, S. Oberti, S. Rabien, S. Robbe-Dubois, S. Rochat, S. Scheithauer, S. Uysal, S. von Fellenberg, S. Yazici, T. Gomes, Th. Henning, T. Ott, T. Paumard, T. Shimizu, V. Lapeyr\\`ere, W. Brandner, X. Haubois, Y. Cl\\'enet, Y. Dallilar","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-01T18:00:17Z","title":"First Light for GRAVITY Wide: Large Separation Fringe Tracking for the Very Large Telescope Interferometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.00684","kind":"arxiv","version":2},"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":"sha256:9a659d6a0005a429cc3eab96fc5bdfd1ed8eb1e4598ae46a2006e8fc59c3313d","target":"record","created_at":"2026-07-05T04:57:10Z","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":"cf8b1f66d8e85c0d38c1877cad4ac8160ce57d4abcecc8613ccdc7e183869a2e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-01T18:00:17Z","title_canon_sha256":"30df7ea777f7474c393aab7b39132b6649332bb11fd3c6d820a01c1a6c19a23a"},"schema_version":"1.0","source":{"id":"2206.00684","kind":"arxiv","version":2}},"canonical_sha256":"0bc8a1e96b4149dde4ebadd85654d08f4f95b141590d246a6f5af5af88647aef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0bc8a1e96b4149dde4ebadd85654d08f4f95b141590d246a6f5af5af88647aef","first_computed_at":"2026-07-05T04:57:10.813278Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:57:10.813278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JPce+a8XVPqJEtccO6L70LOirICS7Ag8l4ruv+9WGFWZNmcZ1GdpJL77bOwdJtU3gyee2hCZ7RvtiDh7Xcc4BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:57:10.813778Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.00684","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a659d6a0005a429cc3eab96fc5bdfd1ed8eb1e4598ae46a2006e8fc59c3313d","sha256:4464b98b254176becbbb6712be4df7595ebeca983d77094c2a8a10f0d59c41b6"],"state_sha256":"0d17fe2c90bfc27319ccf916d5e32546aea33ca7e29082a2cf6919dccf55fb87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bvWc6ZpeV8XoUPopXwcloGc/UtcBZHYq75ME8RsrJwd6I1jAU6eyYB/uWnlqiuSQKaCKZy+iEgTvc70qBXlJCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T23:24:36.723287Z","bundle_sha256":"058de07c0d2fdc48de0e298db967d83fd0a12984260cf414b7f04382cfcde1be"}}