diff --git a/spectrum.py b/spectrum.py
index d1973e2..bb31d57 100644
--- a/spectrum.py
+++ b/spectrum.py
@@ -692,11 +692,11 @@ if verbose:
     print( 'starting output writing' )
 
 if output == None:
-    print( mean_data )
+    print( final_intensity[1:-1] )
 else:
     if verbose:
         print( 'storing result in ' + output )
-    main_hdu  = fits.PrimaryHDU( final_intensity )
+    main_hdu  = fits.PrimaryHDU( final_intensity[1:-1] ) # remove -1
     main_hdu.header[ 'CRVAL1'   ] = wavelengths[0]
     main_hdu.header[ 'CDELT1'   ] = wavelengths[1] - wavelengths[0]
     main_hdu.header[ 'CTYPE1'   ] = 'Wavelength'