28 lines
2.8 KiB
JSON
28 lines
2.8 KiB
JSON
{
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"step_id": "research",
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"agent": "webster",
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"status": "complete",
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"result": "The key difference between Ohara Clearceram-Z HS and Schott Zerodur for astronomical mirrors is a trade-off between thermal stability and mechanical strength. Clearceram-Z HS offers superior thermal stability, with a lower coefficient of thermal expansion (CTE) and better dimensional stability during temperature changes, making it ideal for ground-based telescopes where maintaining a precise figure is critical. Schott Zerodur has higher flexural strength and a long, proven history in space applications (e.g., Hubble), making it the preferred choice for mirrors subjected to high mechanical stress like launch vibrations. Additionally, Clearceram-Z is optically clear, while Zerodur has a yellowish tint. Zerodur is generally more expensive due to its manufacturing complexity and extensive space-flight heritage.",
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"notes": "The comparison is based on Clearceram-Z; the 'HS' (High Stability) variant is an improved version with even better thermal performance, reinforcing the conclusion. Direct datasheets were difficult to access, but reliable comparison articles were found.",
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"run": {
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"schemaVersion": "1.0",
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"runId": "orch-1771178974-532dd46f",
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"agent": "webster",
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"status": "complete",
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"result": "The key difference between Ohara Clearceram-Z HS and Schott Zerodur for astronomical mirrors is a trade-off between thermal stability and mechanical strength. Clearceram-Z HS offers superior thermal stability, with a lower coefficient of thermal expansion (CTE) and better dimensional stability during temperature changes, making it ideal for ground-based telescopes where maintaining a precise figure is critical. Schott Zerodur has higher flexural strength and a long, proven history in space applications (e.g., Hubble), making it the preferred choice for mirrors subjected to high mechanical stress like launch vibrations. Additionally, Clearceram-Z is optically clear, while Zerodur has a yellowish tint. Zerodur is generally more expensive due to its manufacturing complexity and extensive space-flight heritage.",
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"artifacts": [
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"https://jundro.io/clearceram-vs-zerodur/",
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"https://escooptics.com/blogs/news/what-is-low-expansion-glass-zerodur-clearceram-z-and-ule"
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],
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"confidence": "high",
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"notes": "The comparison is based on Clearceram-Z; the 'HS' (High Stability) variant is an improved version with even better thermal performance, reinforcing the conclusion. Direct datasheets were difficult to access, but reliable comparison articles were found.",
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"timestamp": "2026-02-15T18:10:35.000Z",
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"latencyMs": 69684,
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"workflowRunId": "wf-1771178974-24ce4440",
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"stepId": "research",
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"exitCode": 0
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},
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"started_at": "2026-02-15T18:09:34.820984+00:00",
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"finished_at": "2026-02-15T18:10:44.604172+00:00",
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"duration_s": 69.783
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} |