{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:XQAGRQBJLYX6L6PV3AWNESNVK4","short_pith_number":"pith:XQAGRQBJ","schema_version":"1.0","canonical_sha256":"bc0068c0295e2fe5f9f5d82cd249b557008a7744dac020061d292ff1aa5cd011","source":{"kind":"arxiv","id":"2606.13600","version":1},"attestation_state":"computed","paper":{"title":"Feasibility of up-the-ramp sampling under variable sky for ground-based spectrographs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Gaia Gaspar, James E. H. Turner, Marcin Sawicki, Nelson Nunes, Rub\\'en J. D\\'iaz","submitted_at":"2026-06-11T17:18:35Z","abstract_excerpt":"Many modern near-infrared instruments employ HAWAII-2RG (H2RG) detectors with integration times that can reach 300-600s. Up-the-ramp (UTR) sampling offers advantages over Fowler sampling, including superior cosmic ray rejection and extended dynamic range, but requires fitting linear ramps from 30-60 reads. Ground-based K-band sky brightness has been reported to vary by 3-10% on timescales of minutes, potentially introducing systematic errors and compromising photometric accuracy. Additionally, UTR data formats involve higher-dimensional FITS files with larger file sizes impacting observatory o"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.13600","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-11T17:18:35Z","cross_cats_sorted":[],"title_canon_sha256":"b16f85513435d42827f3c55b233e2c73532ce5dfbb826f6fec643c5745de6af8","abstract_canon_sha256":"16dbbd8f7929263a2c1376ab17a8892c02a5ab496f9559f2e01bce2b762f06c8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-12T01:10:12.431344Z","signature_b64":"KZIVjf4R45CXQNHDnTTRNZ9IIDe6WSSDmM84gLTa80+qRz07vCdK9yWe+r0TTWaKEwG3jTkiXtud+Jk1zR6RCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc0068c0295e2fe5f9f5d82cd249b557008a7744dac020061d292ff1aa5cd011","last_reissued_at":"2026-06-12T01:10:12.430553Z","signature_status":"signed_v1","first_computed_at":"2026-06-12T01:10:12.430553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Feasibility of up-the-ramp sampling under variable sky for ground-based spectrographs","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Gaia Gaspar, James E. H. Turner, Marcin Sawicki, Nelson Nunes, Rub\\'en J. D\\'iaz","submitted_at":"2026-06-11T17:18:35Z","abstract_excerpt":"Many modern near-infrared instruments employ HAWAII-2RG (H2RG) detectors with integration times that can reach 300-600s. Up-the-ramp (UTR) sampling offers advantages over Fowler sampling, including superior cosmic ray rejection and extended dynamic range, but requires fitting linear ramps from 30-60 reads. Ground-based K-band sky brightness has been reported to vary by 3-10% on timescales of minutes, potentially introducing systematic errors and compromising photometric accuracy. Additionally, UTR data formats involve higher-dimensional FITS files with larger file sizes impacting observatory o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.13600","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.13600/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.13600","created_at":"2026-06-12T01:10:12.430644+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.13600v1","created_at":"2026-06-12T01:10:12.430644+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.13600","created_at":"2026-06-12T01:10:12.430644+00:00"},{"alias_kind":"pith_short_12","alias_value":"XQAGRQBJLYX6","created_at":"2026-06-12T01:10:12.430644+00:00"},{"alias_kind":"pith_short_16","alias_value":"XQAGRQBJLYX6L6PV","created_at":"2026-06-12T01:10:12.430644+00:00"},{"alias_kind":"pith_short_8","alias_value":"XQAGRQBJ","created_at":"2026-06-12T01:10:12.430644+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4","json":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4.json","graph_json":"https://pith.science/api/pith-number/XQAGRQBJLYX6L6PV3AWNESNVK4/graph.json","events_json":"https://pith.science/api/pith-number/XQAGRQBJLYX6L6PV3AWNESNVK4/events.json","paper":"https://pith.science/paper/XQAGRQBJ"},"agent_actions":{"view_html":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4","download_json":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4.json","view_paper":"https://pith.science/paper/XQAGRQBJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.13600&json=true","fetch_graph":"https://pith.science/api/pith-number/XQAGRQBJLYX6L6PV3AWNESNVK4/graph.json","fetch_events":"https://pith.science/api/pith-number/XQAGRQBJLYX6L6PV3AWNESNVK4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4/action/storage_attestation","attest_author":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4/action/author_attestation","sign_citation":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4/action/citation_signature","submit_replication":"https://pith.science/pith/XQAGRQBJLYX6L6PV3AWNESNVK4/action/replication_record"}},"created_at":"2026-06-12T01:10:12.430644+00:00","updated_at":"2026-06-12T01:10:12.430644+00:00"}