{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PKGBDDT2RLKQ3BWLO4Y5DAPKYK","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":"503bfdcdf7c7eca7a86963dccd9fb3ea6763283467d686e7f6477b6f4a1cdac0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-02-15T15:44:04Z","title_canon_sha256":"b43c931e90d087c4d49fd441a0151fb8e93386f3f14ac3da6a1bc6f658d969e2"},"schema_version":"1.0","source":{"id":"1902.05857","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05857","created_at":"2026-07-05T04:15:38Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05857v1","created_at":"2026-07-05T04:15:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05857","created_at":"2026-07-05T04:15:38Z"},{"alias_kind":"pith_short_12","alias_value":"PKGBDDT2RLKQ","created_at":"2026-07-05T04:15:38Z"},{"alias_kind":"pith_short_16","alias_value":"PKGBDDT2RLKQ3BWL","created_at":"2026-07-05T04:15:38Z"},{"alias_kind":"pith_short_8","alias_value":"PKGBDDT2","created_at":"2026-07-05T04:15:38Z"}],"graph_snapshots":[{"event_id":"sha256:e14931d6163c56edd920418391f0a88def0c44280dc125fde81ef158e213cb3c","target":"graph","created_at":"2026-07-05T04:15:38Z","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/1902.05857/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A low dispersion spectrograph-cum-imager has been developed and assembled in ARIES, Nainital. The optical design of the spectrograph consists of a collimator and a focal reducer converting the f/9 beam from the 3.6-m Devasthal optical telescope to a nearly f/4.3 beam. The instrument is capable of carrying out broad-band imaging, narrow-band imaging and low-resolution ({\\lambda}/{\\Delta}{\\lambda}<2000) slit spectroscopy in the wavelength range 350-1050 nm. A closed-cycle cryogenically cooled charge-coupled device camera, also assembled in ARIES, is used as the main imaging device for the spectr","authors_text":"Amitesh Omar, B. Krishna Reddy, India), Jayshreekar Pant, Manoj Mahto (ARIES, Nainital, T. S. Kumar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-02-15T15:44:04Z","title":"First-light images from low dispersion spectrograph-cum-imager on 3.6-meter Devasthal Optical Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05857","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:f03dc1e19ba07267d37d60dd63195e57fc6183d0648c854bb110c9d6ac520928","target":"record","created_at":"2026-07-05T04:15:38Z","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":"503bfdcdf7c7eca7a86963dccd9fb3ea6763283467d686e7f6477b6f4a1cdac0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-02-15T15:44:04Z","title_canon_sha256":"b43c931e90d087c4d49fd441a0151fb8e93386f3f14ac3da6a1bc6f658d969e2"},"schema_version":"1.0","source":{"id":"1902.05857","kind":"arxiv","version":1}},"canonical_sha256":"7a8c118e7a8ad50d86cb7731d181eac28b04db261174b3bbefc504e96e728a6d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a8c118e7a8ad50d86cb7731d181eac28b04db261174b3bbefc504e96e728a6d","first_computed_at":"2026-07-05T04:15:38.653618Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:15:38.653618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0WMmQ/RK9KIPvY+hsLQTjJV6trilq9a0dEAD1N0zvl6fo11TAkyZduRcPNwNAogyp+27AVq2vhoHUiJyqPcLBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:15:38.654017Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.05857","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f03dc1e19ba07267d37d60dd63195e57fc6183d0648c854bb110c9d6ac520928","sha256:e14931d6163c56edd920418391f0a88def0c44280dc125fde81ef158e213cb3c"],"state_sha256":"4efd450d019bc134c253409574a1dbc60c25213ea4181afe124dbc4439aeecbd"}