Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...466.1087p&link_type=abstract
Astrophysical Journal v.466, p.1087
Astronomy and Astrophysics
Astronomy
41
Atmospheric Effects, Methods: Observational, Sun: Granulation, Techniques: Image Processing, Techniques: Interferometric
Scientific paper
Phase-diversity techniques provide a novel observational method for overcoming the effects of turbulence and instrument-induced aberrations in ground-based astronomy. Two implementations of phase-diversity techniques that differ with regard to noise model, estimator, optimization algorithm, method of regularization, and treatment of edge effects are described. Reconstructions of solar granulation derived by applying these two implementations to common data sets are shown to yield nearly identical images. For both implementations, reconstructions from phase-diverse speckle data (involving multiple realizations of turbulence) are shown to be superior to those derived from conventional phase-diversity data (involving a single realization). Phase-diverse speckle reconstructions are shown to achieve near diffraction-limited resolution and are validated by internal and external consistency tests, including a comparison with a reconstruction using a well-accepted speckle-imaging method.
Keller Christoph U.
Loefdahl Mats G.
Paxman Richard G.
Scharmer Goeran B.
Seldin John H.
No associations
LandOfFree
Evaluation of Phase-Diversity Techniques for Solar-Image Restoration does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evaluation of Phase-Diversity Techniques for Solar-Image Restoration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaluation of Phase-Diversity Techniques for Solar-Image Restoration will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1448869