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Torben Anderssen. Profile picture.

Torben Andersen

Professor emeritus

Torben Anderssen. Profile picture.

Neural networks for image-based wavefront sensing for astronomy

Author

  • Torben Andersen
  • Mette Owner-Petersen
  • Anita Enmark

Summary, in English

We study the possibility of using convolutional neural networks for wavefront sensing from a guide star image in astronomical telescopes. We generated a large number of artificial atmospheric wavefront screens and determined associated best-fit Zernike polynomials. We also generated in-focus and out-of-focus point-spread functions. We trained the well-known “Inception” network using the artificial data sets and found that although the accuracy does not permit diffraction-limited correction, the potential improvement in the residual phase error is promising for a telescope in the 2–4 m class.

Department/s

  • Lund Observatory

Publishing year

2019-09-13

Language

English

Pages

4618-4621

Publication/Series

Optics Letters

Volume

44

Issue

18

Document type

Journal article

Publisher

Optical Society of America

Topic

  • Astronomy, Astrophysics and Cosmology

Status

Published

ISBN/ISSN/Other

  • ISSN: 0146-9592