Physics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..103..393m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 103, no. 2, 1986, p. 393-398.
Physics
1
Image Processing, Solar Activity, Solar Corona, Coronagraphs, Correction, Image Correlators
Scientific paper
Numerical data processing is applied to the high-resolutin images of the solar corona obtained with the 20-cm coronagraph of the Pic du Midi observatory. Two complementary methods are proposed to solve some classical difficulties usually met in the morphological analysis of the solar corona, namely the brightness gradient in the inner and medium corona, the low contrast of numerous emmissive regions, and the superimposition along the line of sight of different structures. The methods which are described in this paper may help to resolve the complex coronal active regions into fine structures which is now necessary to interpret all observed corona data.
Malherbe Jean-Marie
Noens Jacques-Clair
Roudier Th.
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