Provided by: cpl-plugin-visir-doc_4.3.8+dfsg-1_all 
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 4.3.8
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