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Proceedings Article

Phase-diverse speckle reconstruction of solar data

[+] Author Affiliations
John H. Seldin, Richard G. Paxman

Environmental Research Institute of Michigan (USA)

Proc. SPIE 2302, Image Reconstruction and Restoration, 268 (September 30, 1994); doi:10.1117/12.188044
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From Conference Volume 2302

  • Image Reconstruction and Restoration
  • Timothy J. Schulz; Donald L. Snyder
  • San Diego, CA | July 24, 1994


Phase-diverse speckle imaging is a novel imaging modality that makes use of both speckle-imaging and phase-diversity concepts. A phase- diverse speckle data set consists of one conventional image and at least one additional image with known phase diversity for each of multiple atmospheric phase realizations. We demonstrate the use of a phase-diverse speckle data set collected at the Swedish Vacuum Solar Telescope on La Palma to overcome the effects of atmospheric turbulence and to restore a fine-resolution image of solar granulation. We present preliminary results of simultaneously reconstructing an object and a sequence of atmospheric phase aberrations from these data using a maximum-likelihood parameter- estimation framework. The consistency of the reconstructions is demonstrated using subsets of the sequence of images pairs. The use of different phase-aberration parameterization schemes and their affect on parameter estimates are discussed. Insight into the desired number of atmospheric realizations is provided.

© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

John H. Seldin and Richard G. Paxman
"Phase-diverse speckle reconstruction of solar data", Proc. SPIE 2302, Image Reconstruction and Restoration, 268 (September 30, 1994); doi:10.1117/12.188044; http://dx.doi.org/10.1117/12.188044

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