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19 October 2016 Piston phasing in segmented telescopes
Junlun Jiang, Weirui Zhao, Baoyun Sun
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Proceedings Volume 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation; 101541P (2016) https://doi.org/10.1117/12.2247051
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
The next generation of optical telescope will provide a high-resolution imaging of celestial objects by using synthetic aperture. Measuring the piston error between the segments of the synthetic aperture becomes more and more important. We present a piston error detection method based on analyzing the intensity distribution of the image plane, which is adaptable to any segmented and deployable primary mirror telescope. The method’s capture range is the coherence length of the light source used in the imaging system, and the accuracy is of nanoscale. Experiment has been carried out to validate the feasibility of this method.
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Junlun Jiang, Weirui Zhao, and Baoyun Sun "Piston phasing in segmented telescopes", Proc. SPIE 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation, 101541P (19 October 2016); https://doi.org/10.1117/12.2247051
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KEYWORDS
Telescopes
Fourier optics
Modulation transfer functions
Point spread functions
Segmented mirrors
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