Automatic log spectrum restoration of atmospheric seeing

Details Automatic log spectrum restoration of atmospheric seeing Automatic log spectrum restoration of atmospheric seeing

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...174..344n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 174, no. 1-2, March 1987, p. 344-351.

Physics

Optics

2

Atmospheric Optics, Image Processing, Image Resolution, Space Observations (From Earth), Spaceborne Astronomy, Sunspots, Astronomical Photography, Blurring, Image Enhancement, Point Spread Functions

Scientific paper

This paper presents an automatic method for (1) digital estimation of the width of the atmospherical seeing in astronomical images of extended objects and (2) image restoration by using the constrained Jansson-Van Cittert deconvolution algorithm. The estimation of the seeing is achieved by computing the radial profile of the averaged log spectrum of the image. The result of this estimation is then applied to compute the Point Spread Function (PSF) used in the deconvolution process. The method is applied to a photographical image of a sunspot. The quality of the restoration assesses the power and usefulness of the method.

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