Abstract
In a large F number Korsch space camera with 10 m of focal length and 16 of F number, Temperature vibration of secondary mirror structure should be controlled within range of ±0.3 °C. According to traditional precision thermal control technology based on direct bonding of heater films and closed-loop control, temperature control precision is ±0.5 °C. Temperature vibration of secondary mirror structure cannot be controlled within required range, with traditional precision thermal control technology. Precision thermal control technology based on heat shield and radiation heat transfer is proposed. Compare with traditional thermal control technology, better temperature control precision, better temperature control uniformity and better suppression performance of ambient temperature disturbance can be achieved by adopting proposed technology. In experiments and applications, temperature vibration of secondary mirror structure can be controlled within range of ±0.3 °C, by adopting proposed technology. Problem about precision temperature control of secondary mirror structure in the large F number Korsch space camera is resolved. Precision temperature control technology based on heat shield and radiation heat transfer is also adopted on other parts and in other space cameras.
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Luo, S., Cao, D., Song, X. (2017). Precision Thermal Control Technology of Secondary Mirror Structure in Large F Number Korsch Space Camera. In: Urbach, H., Zhang, G. (eds) 3rd International Symposium of Space Optical Instruments and Applications. Springer Proceedings in Physics, vol 192. Springer, Cham. https://doi.org/10.1007/978-3-319-49184-4_3
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DOI: https://doi.org/10.1007/978-3-319-49184-4_3
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