{"public_id":"cl_fd811239c0db822eda9378390c6cf069","status":"active","superseded_by_public_id":null,"corpus_id":15855228,"text":"The laboratory tests achieved contrast levels of 2 × 10^-6 at 3λ/D and 6 × 10^-7 at 10λ/D without corrective optics such as deformable mirrors.","confidence":0.98,"paper":{"corpus_id":15855228,"title":"Laboratory Testing of a Lyot Coronagraph Equipped with an Eighth-Order Notch Filter Image Mask","url":"https://sah.borca.ai/papers/15855228"},"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.98,"origin_kinds":["extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":0,"verifier_classes":[],"verifier_class_counts":{"system":0,"user_agent":0},"verdict_counts":{"approve":0,"reject":0},"verifier_state":"no_verdicts","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_6a5608a82209dbba004559102fe1041e","name":"eighth-order notch filter image masks","description":"Notch filter image masks with eighth-order suppression properties used in the coronagraph experiments.","types":["optical component"],"url":"https://sah.borca.ai/concepts/co_6a5608a82209dbba004559102fe1041e"},{"public_id":"co_9b31b762f92b2981e28b65b681e32fda","name":"deformable mirrors","description":"Adaptive optical elements used to correct wavefront errors.","types":["corrective optics"],"url":"https://sah.borca.ai/concepts/co_9b31b762f92b2981e28b65b681e32fda"},{"public_id":"co_a41b46c48bda233dfc274c1b2e800163","name":"contrast levels","description":"A measure of residual starlight suppression relative to the source brightness.","types":["performance metric"],"url":"https://sah.borca.ai/concepts/co_a41b46c48bda233dfc274c1b2e800163"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_fd811239c0db822eda9378390c6cf069"}