Changes
/* Important Notes */
i.e. in python, to reproduce the same transformation, one would do:<br />
from astropy.io import fits<br />
import numpy as np
im2D = fits.getdata('image.fits')<br />
im2D = np.fliplr(im2D[:,::-1] # flip x<br />im2D = im2D)[:,98:2145] # trim<br />
fits.writeto('outimage.fits',im2D)<br />
This image could then be used for a fresh extraction using IRAF or the user's preffered package, and will be one-to-one pixel aligned with the [approximate] WLC from the 1D extracted arc.