Image Restoration of Io by Shift-and-Add Method and Deconvolution

Details Image Restoration of Io by Shift-and-Add Method and Deconvolution Image Restoration of Io by Shift-and-Add Method and Deconvolution

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pasp..120..348k&link_type=abstract

Publications of the Astronomical Society of the Pacific, Volume 120, issue 865, pp.348-357

Astronomy and Astrophysics

Astronomy

2

Data Analysis And Techniques

Scientific paper

Atmospheric turbulence degrades the image resolution of a ground-based telescope, and a speckle imaging technique can restore the image with high resolution up to the diffraction limit. We have obtained the speckle data of Io (a Jupiter's satellite) using the 2 m telescope in Nishi-Harima Astronomical Observatory. The speckle data are reduced by the shift-and-add method followed by a background-subtraction procedure. The reduced image is then deconvolved by the similarly reduced image of the unresolved binary star HR6168. The comparison with the close-up image taken by the Voyager 2 spacecraft reveals that the restored image shows well-resolved structural features on the surface of Io.

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