Correction of distortion for optimal image stacking in Wide Field Adaptive Optics: Application to GeMS data

A. Bernard; L. M. Mugnier; B. Neichel; T. Fusco; S. Bounissou; M. Samal; M. Andersen; A. Zavagno; H. Plana

doi:10.1117/12.2231287

Correction of distortion for optimal image stacking in Wide Field Adaptive Optics: Application to GeMS data

Instrumentation and Methods for Astrophysics 2016-11-23 v1 Solar and Stellar Astrophysics

Authors: A. Bernard , L. M. Mugnier , B. Neichel , T. Fusco , S. Bounissou , M. Samal , M. Andersen , A. Zavagno , H. Plana

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Abstract

The advent of Wide Field Adaptive Optics (WFAO) systems marks the beginning of a new era in high spatial resolution imaging. The newly commissioned Gemini South Multi-Conjugate Adaptive Optics System (GeMS) combined with the infrared camera Gemini South Adaptive Optics Imager (GSAOI), delivers quasi diffraction-limited images over a field of 2 arc-minutes across. However, despite this excellent performance, some variable residues still limit the quality of the analyses. In particular, distortions severely affect GSAOI and become a critical issue for high-precision astrometry and photometry. In this paper, we investigate an optimal way to correct for the distortion following an inverse problem approach. Formalism as well as applications on GeMS data are presented.

Keywords

Wide Field Adaptive Optics distortion correction image stacking GeMS GSAOI inverse problem high spatial resolution imaging

Cite

@article{arxiv.1607.05029,
  title  = {Correction of distortion for optimal image stacking in Wide Field Adaptive Optics: Application to GeMS data},
  author = {A. Bernard and L. M. Mugnier and B. Neichel and T. Fusco and S. Bounissou and M. Samal and M. Andersen and A. Zavagno and H. Plana},
  journal= {arXiv preprint arXiv:1607.05029},
  year   = {2016}
}

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10 pages, 6 figures

Correction of distortion for optimal image stacking in Wide Field Adaptive Optics: Application to GeMS data

Abstract

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