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       naco_spc_wavecal - Wavelength calibration using arc lamps


       esorex naco_spc_wavecal [OPTIONS] FILE.sof


       naco_spc_wavecal -- NACO spectrocopy wavelength calibration from lamp images.

       The  files  listed  in  the  Set  Of  Frames (sof-file) must be tagged: NACO-raw-file.fits
       CAL_ARC_SPEC NACO-spectrum-model.fits SPC_MODEL NACO-arc-lines.fits SPC_ARGON

       The input frames are split into groups with identical values of ´ESO DET  DIT´,  ´ESO  INS

       Furthermore,  each  input  frame  must  have a value of ESO INS LAMP1 ST that is false for
       off-frames and true for on-frames.

       Products: ARC_MAP: Primary HDU  with  the  wavelength  map,  i.e.  the  pixel  values  are
       wavelengths. The first extension is a single-row table with the polynomial coefficients of
       the 2D dispersion relation, lambda = P(x, y).

       ARC_IMAGE: Primary HDU with the difference image of the lamp-on and -off image. The  first
       extension  is  the  distortion  corrected  image, were all the arc-lines are straight. The
       dispersion in the distortion corrected image is given by the central dispersion, lambda  =
       P(512.5, y).


       --plot <int>
              The  recipe  can  produce a number of predefined plots. Zero means that none of the
              plots are produced, while increasing values (e.g. 1 or 2) increases the  number  of
              plots  produced.  If  the  plotting  fails  a  warning  is produced, and the recipe
              continues. The default behaviour of the plotting is to  use  gnuplot  (with  option
              -persist).  The  recipe  currently  produces  1D-plots  using gnuplot commands. The
              recipe user can control the actual plotting-command used by the  recipe  to  create
              the plot by setting the environment variable CPL_PLOTTER. Currently, if CPL_PLOTTER
              is  set  it  must  contain  the  string   ´gnuplot´.   Setting   it   to   ´cat   >
              my_gnuplot_$$.txt´ causes a number of ASCII-files to be created, which each produce
              a plot when given as standard input to  gnuplot  (e.g.  later  or  on  a  different
              computer).  A  finer  control of the plotting options can be obtained by writing an
              executable script, e.g., that  executes  gnuplot  after  setting  the
              desired  gnuplot  options  (e.g.  set  terminal  pslatex  color)  and  then setting
              CPL_PLOTTER to The predefined  plots  include  plotting  of  images.
              Images can be plotted not only with gnuplot, but also using the pnm format. This is
              controlled with the environment variable CPL_IMAGER. If  CPL_IMAGER  is  set  to  a
              string that does not contain the word gnuplot, the recipe will generate the plot in
              pnm format. E.g.  setting CPL_IMAGER to ´display - &´  will  produce  a  gray-scale
              image  using  the  image  viewer  display. (int; default: 0). The full name of this
              option for the EsoRex configuration file is naco.naco_spc_wavecal.plot  [default  =

       --force <bool>
              Force  the computation (bool; default: False). The full name of this option for the
              EsoRex configuration file is naco.naco_spc_wavecal.force [default = False].

       Note that it is possible to create a configuration file containing  these  options,  along
       with  suitable default values. Please refer to the details provided by the 'esorex --help'


       The full documentation for the naco pipeline can be downloaded as a  PDF  file  using  the
       following URL:


       An   overview   over   the   existing   ESO  pipelines  can  be  found  on  the  web  page

       Basic documentation about the EsoRex program can be found at the esorex (1) man page.

       It is possible to call the pipelines  from  python  using  the  python-cpl  package.   See for further information.

       The  other  recipes  of  the  naco  pipeline are naco_img_checkfocus(7), naco_img_dark(7),
       naco_img_detlin(7),   naco_img_jitter(7),    naco_img_lampflat(7),    naco_img_slitpos(7),
       naco_img_strehl(7),     naco_img_twflat(7),    naco_img_zpoint(7),    naco_spc_combine(7),
       naco_spc_lampflat(7),          naco_util_img_std_cat(7),           naco_util_spc_argon(7),


       naco_spc_wavecal 4.4.6


       Lars Lundin <>


       Please  report  any  problems to Alternatively, you may send a report to
       the ESO User Support Department <>.


       This file is part of the NACO Instrument Pipeline Copyright (C)  2002,  2003,  2005,  2008
       European Southern Observatory

       This program is free software; you can redistribute it and/or modify it under the terms of
       the GNU General Public License as  published  by  the  Free  Software  Foundation;  either
       version 2 of the License, or (at your option) any later version.

       This  program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE.
       See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program;
       if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,  Boston,
       MA  02111-1307  USA