The semi-minor axis of the ellipse descibing the solar image. N1,N2 are the dimensions of the image. Units are pixels. The semi-major axis of the ellipse descibing the solar image. N1,N2 are the dimensions of the image.
Units are pixels.
The ellipse rotation angle. A counter-clockwise rotation of the y axis to the ellipse major axis is a positive angle. Units are degrees. 1.0.LE.PCR.LE.1000.0 rot Rotation angle. A positive rotation angle corresponds to a counter-clockwise rotation of the input image in sky coordinates.