{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:BEWSCC3I7PTT2AFLEX5LWYVJBM","short_pith_number":"pith:BEWSCC3I","canonical_record":{"source":{"id":"1105.1251","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-06T09:45:39Z","cross_cats_sorted":[],"title_canon_sha256":"020ffac91f1036a1a9e62ac327b8b08a92ce4c93783f1e2644ddb6328451fdd9","abstract_canon_sha256":"b564c5828b6b568ac458d5483b536dbd3babaab85670e906fdb116561151833a"},"schema_version":"1.0"},"canonical_sha256":"092d210b68fbe73d00ab25fabb62a90b247a2f8a078bf560b22a7e0149268bad","source":{"kind":"arxiv","id":"1105.1251","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1251","created_at":"2026-05-18T03:33:26Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1251v1","created_at":"2026-05-18T03:33:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1251","created_at":"2026-05-18T03:33:26Z"},{"alias_kind":"pith_short_12","alias_value":"BEWSCC3I7PTT","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"BEWSCC3I7PTT2AFL","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"BEWSCC3I","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:BEWSCC3I7PTT2AFLEX5LWYVJBM","target":"record","payload":{"canonical_record":{"source":{"id":"1105.1251","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-06T09:45:39Z","cross_cats_sorted":[],"title_canon_sha256":"020ffac91f1036a1a9e62ac327b8b08a92ce4c93783f1e2644ddb6328451fdd9","abstract_canon_sha256":"b564c5828b6b568ac458d5483b536dbd3babaab85670e906fdb116561151833a"},"schema_version":"1.0"},"canonical_sha256":"092d210b68fbe73d00ab25fabb62a90b247a2f8a078bf560b22a7e0149268bad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:33:26.704118Z","signature_b64":"hT7vmZppT1Bz5Kq7wpLD2XtmL6XyYRkV2NCTveq0WChQindGKo08RCqY1Jckqok9j4lF0dAIBXSNAL9g3WmICg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"092d210b68fbe73d00ab25fabb62a90b247a2f8a078bf560b22a7e0149268bad","last_reissued_at":"2026-05-18T03:33:26.703199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:33:26.703199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.1251","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:33:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6oH+YaUgONFseGLVSpOVmZ1o6cKE91hSKpROIvIlUbTftrc5MiKqd+3Yo1x9SogRl/VQ9lEFhmA/x7ISwvvsDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:01:25.291192Z"},"content_sha256":"a50f5f4ffe6a32f6b8056d3ca111b6f0790ff70b3251aa752566fadb564a8308","schema_version":"1.0","event_id":"sha256:a50f5f4ffe6a32f6b8056d3ca111b6f0790ff70b3251aa752566fadb564a8308"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:BEWSCC3I7PTT2AFLEX5LWYVJBM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of night sky brightness in southern Australia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Daniel Hampf, Dieter Horns, Gavin Rowell, Martin Tluczykont, Neville Wild, Tristan Sudholz","submitted_at":"2011-05-06T09:45:39Z","abstract_excerpt":"Night sky brightness is a major source of noise both for Cherenkov telescopes as well as for wide-angle Cherenkov detectors. Therefore, it is important to know the level of night sky brightness at potential sites for future experiments. The measurements of night sky brightness presented here were carried out at Fowler's Gap, a research station in New South Wales, Australia, which is a potential site for the proposed TenTen Cherenkov telescope system and the planned wide-angle Cherenkov detector system HiSCORE.\n  A portable instrument was developed and measurements of the night sky brightness w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1251","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":""},"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":"2026-05-18T03:33:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fADvtk0gTP8w9pqDjXG6OAvi4XTIniZ7axdNO1PfqUvzjKIi+wnGxaXI7pzEuRpuHkfWHPhYp/dGgh9GY6soCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:01:25.291620Z"},"content_sha256":"648e26885e4caba6d5fc58c37785612f51b47cf2fb25900ce84edf8bb15794a6","schema_version":"1.0","event_id":"sha256:648e26885e4caba6d5fc58c37785612f51b47cf2fb25900ce84edf8bb15794a6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM/bundle.json","state_url":"https://pith.science/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM/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":"2026-05-25T13:01:25Z","links":{"resolver":"https://pith.science/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM","bundle":"https://pith.science/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM/bundle.json","state":"https://pith.science/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BEWSCC3I7PTT2AFLEX5LWYVJBM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:BEWSCC3I7PTT2AFLEX5LWYVJBM","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":"b564c5828b6b568ac458d5483b536dbd3babaab85670e906fdb116561151833a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-06T09:45:39Z","title_canon_sha256":"020ffac91f1036a1a9e62ac327b8b08a92ce4c93783f1e2644ddb6328451fdd9"},"schema_version":"1.0","source":{"id":"1105.1251","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1251","created_at":"2026-05-18T03:33:26Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1251v1","created_at":"2026-05-18T03:33:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1251","created_at":"2026-05-18T03:33:26Z"},{"alias_kind":"pith_short_12","alias_value":"BEWSCC3I7PTT","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"BEWSCC3I7PTT2AFL","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"BEWSCC3I","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:648e26885e4caba6d5fc58c37785612f51b47cf2fb25900ce84edf8bb15794a6","target":"graph","created_at":"2026-05-18T03:33:26Z","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":"Night sky brightness is a major source of noise both for Cherenkov telescopes as well as for wide-angle Cherenkov detectors. Therefore, it is important to know the level of night sky brightness at potential sites for future experiments. The measurements of night sky brightness presented here were carried out at Fowler's Gap, a research station in New South Wales, Australia, which is a potential site for the proposed TenTen Cherenkov telescope system and the planned wide-angle Cherenkov detector system HiSCORE.\n  A portable instrument was developed and measurements of the night sky brightness w","authors_text":"Daniel Hampf, Dieter Horns, Gavin Rowell, Martin Tluczykont, Neville Wild, Tristan Sudholz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-06T09:45:39Z","title":"Measurement of night sky brightness in southern Australia"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1251","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:a50f5f4ffe6a32f6b8056d3ca111b6f0790ff70b3251aa752566fadb564a8308","target":"record","created_at":"2026-05-18T03:33:26Z","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":"b564c5828b6b568ac458d5483b536dbd3babaab85670e906fdb116561151833a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-06T09:45:39Z","title_canon_sha256":"020ffac91f1036a1a9e62ac327b8b08a92ce4c93783f1e2644ddb6328451fdd9"},"schema_version":"1.0","source":{"id":"1105.1251","kind":"arxiv","version":1}},"canonical_sha256":"092d210b68fbe73d00ab25fabb62a90b247a2f8a078bf560b22a7e0149268bad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"092d210b68fbe73d00ab25fabb62a90b247a2f8a078bf560b22a7e0149268bad","first_computed_at":"2026-05-18T03:33:26.703199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:33:26.703199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hT7vmZppT1Bz5Kq7wpLD2XtmL6XyYRkV2NCTveq0WChQindGKo08RCqY1Jckqok9j4lF0dAIBXSNAL9g3WmICg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:33:26.704118Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.1251","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a50f5f4ffe6a32f6b8056d3ca111b6f0790ff70b3251aa752566fadb564a8308","sha256:648e26885e4caba6d5fc58c37785612f51b47cf2fb25900ce84edf8bb15794a6"],"state_sha256":"be026fcfd5c09f0a7cd77ba2759e28f4f93bb1d0fe6124b4ab4dcfe90cd405dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3/J0SibQik0N0/KO0td/hUdx0bCMQ/6cpr0cCBUR+zara5cdPZg6gEYM2n24dGYJchjmJrRAeI/XOsTWfIWaBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:01:25.295927Z","bundle_sha256":"2291720b90e97061ed37d5ecf133f6dcc0c25877f7181d399da01b749fdea179"}}