To run fixband.pro you must first download the file, fixband.pro.txt and change its name to fixband.pro.

You must also have a running version of IDL, astrolib, and atv.

The script must be run from the same directory as the image to be corrected.

To run the script type, at the IDL prompt, .RUN fixband.pro

the script will display the original image in atv.

then type, at the IDL prompt, .continue

the script will then display the fixed image in atv.

The script will need to be edited manually and configured for the particular image to be corrected.  The editing is described below. 

To edit the script:

find the line  ; #1
      replace mosaic.fits with the name of your image
      
find the line  ; #2
      replace the min=0,max=4 numbers with zscales appropriate to your image

find the line  ; #3
      replace the numbers in x1=127 & x2=379 & ybad=316 & width=3
      x1 is the left x pixel value of the band on the left of the galaxy
      x2 is the right x pixel value of the band on the left of the galaxy
      ybad is the y pixel value of the band
      width is 1/2 the vertical range needed to fit the band

find the line  ; #4
      replace the numbers in x1=380 & x2=621 & ybad=316 & width=3
      x1 is the left x pixel value of the band on the right of the galaxy
      x2 is the right x pixel value of the band on the right of the galaxy
      ybad is the same as before
      width is the same as before

find the line  ; #5
      replace the numbers in xmin=127 & xmax=621
      xmin is the x pixel value of the left most extent of the band
      xmax is the x pixel value of the right most extent of the band
      replace the numbers in x1l=127 & x2l=379 & ybad=316 & width=3 & x1r=380 & x2r=621
      x1l is the x pixel value of the left of the band on the left of the galaxy
      x2l is the x pixel value of the right of the band on the left of the galaxy
      ybad is the same as before
      width is the same as before
      x1r is the x pixel value of the left of the band on the right of the galaxy
      x2r is the x pixel value of the right of the band on the right of the galaxy


find the line  ; #6
      replace arp242ch4_db.fits with the output name of your choice

find the line  ; #7
      replace the numbers in min=0,max=4 with zscale values appropriate to your image.


To correct two bands in an image find the line ; #8
      delete the lines with single ; to uncomment them
      edit the numbers as described above
      go to line  ; #7
      change mnew to mnew2