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What are the thermal and aiming characteristics?

April 26, 2017aiming characteristics Thermal

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What are the thermal and aiming characteristics?

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A. Aiming stability over time and temperature is completely dependent upon the substrate used. Near zero drift is obtained by using a substrate with a low thermal coefficient of expansion (TCE) such as fused silica. See these links to Angular Deviation vs. Temperature and Lateral Dispersion (using a 50 mm FL lens vs. Temperature.