Tomographic wave-front sensing with a single guide star

Michael Hart, Stuart Jefferies, Douglas Hope

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Adaptive optics or numerical restoration algorithms that restore high resolution imaging through atmospheric turbulence are subject to isoplanatic wave-front errors. Mitigating those errors requires that the wave-front aberrations be estimated within the 3D volume of the atmosphere. Present techniques rely on multiple beacons, either natural stars or laser guide stars, to probe the atmospheric aberration along different lines of sight, followed by tomographic projection of the measurements onto layers at defined ranges. In this paper we show that a three-dimensional estimate of the wave-front aberration can be recovered from measurements by a single guide star in the case where the aberration is stratified, provided that the telescope tracks across the sky with non-uniform angular velocity. This is generally the case for observations of artificial earth-orbiting satellites, and the new method is likely to find application in ground-based telescopes used for space situational awareness.

Original languageEnglish (US)
Title of host publicationUnconventional Imaging and Wavefront Sensing XII
EditorsDavid C. Dayton, Thomas J. Karr, Jean J. Dolne
PublisherSPIE
ISBN (Electronic)9781510603554
DOIs
Publication statusPublished - Jan 1 2016
EventUnconventional Imaging and Wavefront Sensing XII - San Diego, United States
Duration: Aug 31 2016Sep 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9982
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceUnconventional Imaging and Wavefront Sensing XII
CountryUnited States
CitySan Diego
Period8/31/169/1/16

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Keywords

  • anisoplanatism
  • telescopes
  • tomography
  • wave-front sensing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Hart, M., Jefferies, S., & Hope, D. (2016). Tomographic wave-front sensing with a single guide star. In D. C. Dayton, T. J. Karr, & J. J. Dolne (Eds.), Unconventional Imaging and Wavefront Sensing XII [998207] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9982). SPIE. https://doi.org/10.1117/12.2257358