visir_util_undistort(7) on Linux
The text 99f9f396d3c8, as Debian 9 (Stretch) shipped it.
Correct the distortion in spectral data
Flags it lists
-
--bkgcorrect -
--hori_arc -
--slit_skew -
--spectrum_skew -
--vert_arc -
--xh -
--xl -
--yh -
--yl