RA - Create Ramp image
Fits a least-squares plane to the picture, and subtracts the plane from the picture. A wedge-shaped overall density profile can thus be removed from the picture.
.INPUT FILE: PIC001
[Enter the name of the file that needs to be corrected.]
.OUTPUT FILE: IMG043
[Output file name.]
This operation should be used for pre-processing whenever the autocorrelation function has a "rooftop" appearance.
The result of the statistical F-test of the multiple correlation coefficient is calculated.