Changes

The exact values for these are stored in:

/usr/local/etc/qlgui/pars.json<br />

"badMax0": 98, <br />

"badMin1": 2145, <br />

in python 0-based numbering.<br />

i.e. in python, to reproduce the same transformation, one would do:<br />

from astropy.io import fits<br />

im2D = fits.getdata('image.fits')<br />

im2D = im2D[:,-:] # 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.

In IRAF, the equivalent would be:<br />

imcopy a0361665[-*,*] test.fits<br />

[Note the 1-based indexing]