Piston phasing in segmented telescopes

Junlun Jiang; Weirui Zhao; Baoyun Sun

doi:10.1117/12.2247051

Piston phasing in segmented telescopes

Junlun Jiang, Weirui Zhao^*, Baoyun Sun

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

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.

Original language	English
Article number	101541P
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10154
DOIs	https://doi.org/10.1117/12.2247051
Publication status	Published - 2016
Event	International Symposium on Advanced Optical Design and Manufacturing Technologies and International Symposium on Astronomical Telescope and Instrumentation - Beijing, China Duration: 9 May 2016 → 11 May 2016

Keywords

Cophasing error
Fourier optics
MTF
Segmented mirror
Telescopes

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10.1117/12.2247051

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title = "Piston phasing in segmented telescopes",

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.",

keywords = "Cophasing error, Fourier optics, MTF, Segmented mirror, Telescopes",

author = "Junlun Jiang and Weirui Zhao and Baoyun Sun",

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T1 - Piston phasing in segmented telescopes

AU - Jiang, Junlun

AU - Zhao, Weirui

AU - Sun, Baoyun

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Cophasing error

KW - Fourier optics

KW - MTF

KW - Segmented mirror

KW - Telescopes

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U2 - 10.1117/12.2247051

DO - 10.1117/12.2247051

M3 - Conference article

AN - SCOPUS:85010904515

SN - 0277-786X

VL - 10154

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 101541P

T2 - International Symposium on Advanced Optical Design and Manufacturing Technologies and International Symposium on Astronomical Telescope and Instrumentation

Y2 - 9 May 2016 through 11 May 2016

ER -

Piston phasing in segmented telescopes

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Keywords

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