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NAME

       visir_old_spc_wcal_ech  - Old DRS detector: Spectroscopic wavelength calibration recipe in
       Echelle

SYNOPSIS

       esorex visir_old_spc_wcal_ech [OPTIONS] FILE.sof

DESCRIPTION

       This recipe estimates the dispersion relation using the atmospheric spectrum  in  a  grism
       spectroscopy half-cycle frame.

       The    files    listed    in    the   Set   Of   Frames   (sof-file)   must   be   tagged:
       VISIR-Echelle-Spectroscopy-file.fits                                     SPEC_CAL_HRG_WCAL
       VISIR-Quantum-Efficiency-Calibration-file.fits                               SPEC_CAL_QEFF
       VISIR-Atmospheric-Emission-Lines-Calibration-file.fits SPEC_CAL_LINES

       Additionally, a bad pixel map with a PRO.CATG of SPEC_BPM may  be  added  to  the  Set  Of
       Frames with tag: BPM.

OPTIONS

       --auto_bpm <bool>
              Automatic  detection  and  correction of bad pixels (bool; default: True). The full
              name    of    this    option    for    the    EsoRex    configuration    file    is
              visir.visir_old_spc_wcal_ech.auto_bpm [default = True].

       --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. my_gnuplot.pl, that  executes  gnuplot  after  setting  the
              desired  gnuplot  options  (e.g.  set  terminal  pslatex  color)  and  then setting
              CPL_PLOTTER to my_gnuplot.pl. 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  visir.visir_old_spc_wcal_ech.plot
              [default = 0].

       --slit_skew <float>
              Distortion  correction:  Skew  of slit (degrees) (clockwise) (float; default: 0.0).
              The  full  name  of  this   option   for   the   EsoRex   configuration   file   is
              visir.visir_old_spc_wcal_ech.phi [default = 0.0].

       --spectrum_skew <float>
              Distortion  correction:  LMR  Skew  of spectrum (degrees) (counter- clockwise). Not
              used in High Resolution (float; default: 0.0). The full name of this option for the
              EsoRex configuration file is visir.visir_old_spc_wcal_ech.ksi [default = 0.0].

       --vert_arc <float>
              Distortion  correction: LR Detector vertical curvature (pixel). Reduced by a factor
              4 in MR. Not used in HR A-side. Increased by a factor 115/52 in HR  B-side  (float;
              default:  0.0).  The  full name of this option for the EsoRex configuration file is
              visir.visir_old_spc_wcal_ech.eps [default = 0.0].

       --hori_arc <float>
              Distortion correction: LMR Detector horizontal curvature (pixel).  Increased  by  a
              factor  1.5 in HR A-side. Reduced by a factor 2 in HR B-side (float; default: 0.0).
              The  full  name  of  this   option   for   the   EsoRex   configuration   file   is
              visir.visir_old_spc_wcal_ech.delta [default = 0.0].

       --orderoffset <int>
              Echelle  order  offset. The offset is relative to the main order. The allowed range
              of offsets depend on the selected grism. The offset can never exceed +/-4.  If  the
              main  order  is e.g. 8 an order offset of +1 will cause the recipe to base the data
              reduction on order 9. With a positive order offset the central  wavelength  becomes
              smaller  while  for  a negative order offset the central wavelength becomes larger.
              (int; default: 0). The full name of this option for the EsoRex  configuration  file
              is visir.visir_old_spc_wcal_ech.orderoffset [default = 0].

       --rl <int>
              Reject  leftmost columns in spectrum extraction, zero means all columns on the left
              are used. In cross-dispersion mode a (small) negative number may  be  used  (pixel)
              (int;  default:  0). The full name of this option for the EsoRex configuration file
              is visir.visir_old_spc_wcal_ech.reject_left [default = 0].

       --rr <int>
              Reject rightmost columns in spectrum extraction, zero  means  all  columns  on  the
              right  are  used.  In  cross-dispersion  mode a (small) negative number may be used
              (pixel)  (int;  default:  0).  The  full  name  of  this  option  for  the   EsoRex
              configuration file is visir.visir_old_spc_wcal_ech.reject_right [default = 0].

       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'
       command.

SEE ALSO

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

              ftp://ftp.eso.org/pub/dfs/pipelines/visir/visir-pipeline-manual-1.4.pdf

       An  overview  over  the  existing  ESO  pipelines  can  be   found   on   the   web   page
       https://www.eso.org/sci/software/pipelines/.

       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
       https://packages.python.org/python-cpl/index.html for further information.

       The  other  recipes  of  the  visir  pipeline  are   visir_img_dark(7),   visir_img_ff(7),
       visir_img_reduce(7),  visir_img_trans(7), visir_old_img_combine(7), visir_old_img_phot(7),
       visir_old_spc_obs(7),           visir_old_spc_obs_ech(7),           visir_old_spc_phot(7),
       visir_old_spc_phot_ech(7),        visir_old_spc_wcal(7),       visir_old_util_destripe(7),
       visir_spc_reduce(7),            visir_util_apply_calib(7),             visir_util_clip(7),
       visir_util_convert_weight(7),    visir_util_detect_shift(7),    visir_util_img_std_cat(7),
       visir_util_join(7),   visir_util_qc(7),   visir_util_repack(7),   visir_util_run_swarp(7),
       visir_util_spc_std_cat(7), visir_util_spc_txt2fits(7), visir_util_undistort(7)

VERSION

       visir_old_spc_wcal_ech 4.3.7

AUTHOR

       Lars Lundin <usd-help@eso.org>

BUG REPORTS

       Please  report  any  problems to usd-help@eso.org. Alternatively, you may send a report to
       the ESO User Support Department <usd-help@eso.org>.

LICENSE

       This file is part of the VISIR Instrument  Pipeline  Copyright  (C)  2004,  2005  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