{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ZMYJM63G3ICXSKFQ6SAEHM6ZBA","short_pith_number":"pith:ZMYJM63G","canonical_record":{"source":{"id":"1605.06277","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-05-20T10:37:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"96a8aa92d13f8d454866c4a14e3ab9312410ffb369271ed4ab71fa6a90fc9616","abstract_canon_sha256":"bec3e25cce8afddb2792019c62d8a1435a09db8edb8533d258e1020c7480ee0d"},"schema_version":"1.0"},"canonical_sha256":"cb30967b66da057928b0f48043b3d908358b66e766d35c896d3a6bef4ae59da7","source":{"kind":"arxiv","id":"1605.06277","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.06277","created_at":"2026-05-18T01:14:19Z"},{"alias_kind":"arxiv_version","alias_value":"1605.06277v1","created_at":"2026-05-18T01:14:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.06277","created_at":"2026-05-18T01:14:19Z"},{"alias_kind":"pith_short_12","alias_value":"ZMYJM63G3ICX","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"ZMYJM63G3ICXSKFQ","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"ZMYJM63G","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ZMYJM63G3ICXSKFQ6SAEHM6ZBA","target":"record","payload":{"canonical_record":{"source":{"id":"1605.06277","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-05-20T10:37:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"96a8aa92d13f8d454866c4a14e3ab9312410ffb369271ed4ab71fa6a90fc9616","abstract_canon_sha256":"bec3e25cce8afddb2792019c62d8a1435a09db8edb8533d258e1020c7480ee0d"},"schema_version":"1.0"},"canonical_sha256":"cb30967b66da057928b0f48043b3d908358b66e766d35c896d3a6bef4ae59da7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:14:19.356832Z","signature_b64":"thPwu6QPr/yOxYHTll4qkLdDDR1kNCNaZfS1teGe5jw5HR1Tvbzx1jwUXBkIBV/vFRx2JrvRpkZoKMjgGOGNDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb30967b66da057928b0f48043b3d908358b66e766d35c896d3a6bef4ae59da7","last_reissued_at":"2026-05-18T01:14:19.356012Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:14:19.356012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.06277","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":"2026-05-18T01:14:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L6IMMzZ5Kixsa34GKXb79grxAoNJ5mrvkd+hPYO6uup36IGCovZtDkEs9nHf7fOZsOJESzu/usQFH2wHXdqyCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:40:04.566509Z"},"content_sha256":"c466ca920747348968c4a6acd72c4436d9ad621811b19dc36acb8f51dd14aba3","schema_version":"1.0","event_id":"sha256:c466ca920747348968c4a6acd72c4436d9ad621811b19dc36acb8f51dd14aba3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ZMYJM63G3ICXSKFQ6SAEHM6ZBA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bokeh Mirror Alignment for Cherenkov Telescopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"A. Biland, A.-K. Overkemping, A. Neronov, A. Paravac, A. Shukla, A. Wilbert, C. Hempfling, D. Baack, D. Dorner, D. Hildebrand, D. Neise, F. Pauss, F. Temme, G. Hughes, J. Buss, J. Thaele, K. A. Bruegge, K. Mannheim, M. Balbo, M. Bergmann, M. Blank, M. Domke, M. L. Ahnen, M. Noethe, P. Vogler, R. Walter, S. A. Mueller, S. Einecke, S. Toscano, T. Bretz, W. Lustermann, W. Rhode","submitted_at":"2016-05-20T10:37:06Z","abstract_excerpt":"Imaging Atmospheric Cherenkov Telescopes (IACTs) need imaging optics with large apertures and high image intensities to map the faint Cherenkov light emitted from cosmic ray air showers onto their image sensors. Segmented reflectors fulfill these needs, and composed from mass production mirror facets they are inexpensive and lightweight. However, as the overall image is a superposition of the individual facet images, alignment remains a challenge. Here we present a simple, yet extendable method, to align a segmented reflector using its Bokeh. Bokeh alignment does not need a star or good weathe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.06277","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":"2026-05-18T01:14:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"td57XXqFqjfRTiFHkm6GsMy6VwGqlu+EDOJjlm/DcMzQc8vt5XcV6q7ksGFuzcyMs8XKu6ubgfOPxCSo0TuGCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:40:04.567179Z"},"content_sha256":"301cc66be749dc3af49e697d9f7f81d24cbe3fe1cd2ad11df03e346ee4cae5ad","schema_version":"1.0","event_id":"sha256:301cc66be749dc3af49e697d9f7f81d24cbe3fe1cd2ad11df03e346ee4cae5ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA/bundle.json","state_url":"https://pith.science/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA/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":"2026-05-26T03:40:04Z","links":{"resolver":"https://pith.science/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA","bundle":"https://pith.science/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA/bundle.json","state":"https://pith.science/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZMYJM63G3ICXSKFQ6SAEHM6ZBA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZMYJM63G3ICXSKFQ6SAEHM6ZBA","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":"bec3e25cce8afddb2792019c62d8a1435a09db8edb8533d258e1020c7480ee0d","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-05-20T10:37:06Z","title_canon_sha256":"96a8aa92d13f8d454866c4a14e3ab9312410ffb369271ed4ab71fa6a90fc9616"},"schema_version":"1.0","source":{"id":"1605.06277","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.06277","created_at":"2026-05-18T01:14:19Z"},{"alias_kind":"arxiv_version","alias_value":"1605.06277v1","created_at":"2026-05-18T01:14:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.06277","created_at":"2026-05-18T01:14:19Z"},{"alias_kind":"pith_short_12","alias_value":"ZMYJM63G3ICX","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"ZMYJM63G3ICXSKFQ","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"ZMYJM63G","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:301cc66be749dc3af49e697d9f7f81d24cbe3fe1cd2ad11df03e346ee4cae5ad","target":"graph","created_at":"2026-05-18T01:14:19Z","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":"Imaging Atmospheric Cherenkov Telescopes (IACTs) need imaging optics with large apertures and high image intensities to map the faint Cherenkov light emitted from cosmic ray air showers onto their image sensors. Segmented reflectors fulfill these needs, and composed from mass production mirror facets they are inexpensive and lightweight. However, as the overall image is a superposition of the individual facet images, alignment remains a challenge. Here we present a simple, yet extendable method, to align a segmented reflector using its Bokeh. Bokeh alignment does not need a star or good weathe","authors_text":"A. Biland, A.-K. Overkemping, A. Neronov, A. Paravac, A. Shukla, A. Wilbert, C. Hempfling, D. Baack, D. Dorner, D. Hildebrand, D. Neise, F. Pauss, F. Temme, G. Hughes, J. Buss, J. Thaele, K. A. Bruegge, K. Mannheim, M. Balbo, M. Bergmann, M. Blank, M. Domke, M. L. Ahnen, M. Noethe, P. Vogler, R. Walter, S. A. Mueller, S. Einecke, S. Toscano, T. Bretz, W. Lustermann, W. Rhode","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-05-20T10:37:06Z","title":"Bokeh Mirror Alignment for Cherenkov Telescopes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.06277","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:c466ca920747348968c4a6acd72c4436d9ad621811b19dc36acb8f51dd14aba3","target":"record","created_at":"2026-05-18T01:14:19Z","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":"bec3e25cce8afddb2792019c62d8a1435a09db8edb8533d258e1020c7480ee0d","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-05-20T10:37:06Z","title_canon_sha256":"96a8aa92d13f8d454866c4a14e3ab9312410ffb369271ed4ab71fa6a90fc9616"},"schema_version":"1.0","source":{"id":"1605.06277","kind":"arxiv","version":1}},"canonical_sha256":"cb30967b66da057928b0f48043b3d908358b66e766d35c896d3a6bef4ae59da7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb30967b66da057928b0f48043b3d908358b66e766d35c896d3a6bef4ae59da7","first_computed_at":"2026-05-18T01:14:19.356012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:14:19.356012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"thPwu6QPr/yOxYHTll4qkLdDDR1kNCNaZfS1teGe5jw5HR1Tvbzx1jwUXBkIBV/vFRx2JrvRpkZoKMjgGOGNDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:14:19.356832Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.06277","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c466ca920747348968c4a6acd72c4436d9ad621811b19dc36acb8f51dd14aba3","sha256:301cc66be749dc3af49e697d9f7f81d24cbe3fe1cd2ad11df03e346ee4cae5ad"],"state_sha256":"c0933d7cfed6b0562c6f9f7596870355691ce07c1199bf8725a70a9b622a6bc4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r2ERwNBislDvuX6L50NCFGNFFfF28OLFX7Qwbl0buJOD9UIPJ5jm3tR1680MVy5QGe+QVxiD1GxfTjYrklHhCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:40:04.570939Z","bundle_sha256":"ecfd855f98d6edf41aea7df6bc00b0dcdf309eab4f517ea31b984c5aa43f7b3d"}}