ON THE 3-DIMENSIONAL STRUCTURE OF CORONAL RAYS

A calculation of the three-dimensional structure of coronal rays is ca rried out. We used two photographs obtained in observations along the band of the eclipse of July 11, 1991. The time interval was 3h15m, the angle of Sun's rotation phi = 1.-degree8. It is shown that in the cas e of small angles, the method of calculations does not depend on assum ptions about the nature of the ray structures: they may be lines in th e three-dimensional space (such are probably polar ''brushes'') or the totality of points of tangency of the magnetic surfaces with the line of sight. The helm-like structures are projected pleats of magnetic s urfaces.