NAME

       fors_wave_calib_lss - Derive dispersion relation from long-slit arc lamp frame

SYNOPSIS

       esorex fors_wave_calib_lss [OPTIONS] FILE.sof

DESCRIPTION

       This recipe is used to wavelength calibrate one long slit spectrum, i.e., a FORS spectral obtained either
       in LSS mode or in MOS/MXU mode with all slits at the same offset. A pattern-matching algorithm is applied
       as  in  recipe  fors_detect_spectra. For more details on this data reduction strategy please refer to the
       FORS Pipeline User´s Manual.

       Note that specifying an input GRISM_TABLE will set some of the recipe configuration parameters to default
       values valid for a particular grism.

       In the table below the LSS acronym can be alternatively read as MOS or MXU.

       Input files:

         DO category:               Type:       Explanation:         Required:
         LAMP_UNBIAS_LSS            Calib       Arc lamp exposure       Y
         MASTER_LINECAT             Calib       Line catalog            Y
         GRISM_TABLE                Calib       Grism table             .

       Output files:

         DO category:               Data type:  Explanation:
         REDUCED_LAMP_LSS           FITS image  Calibrated arc lamp exposure
         DISP_COEFF_LSS             FITS table  Inverse dispersion coefficients
         DISP_RESIDUALS_LSS         FITS image  Image of modeling residuals
         WAVELENGTH_MAP_LSS         FITS image  Wavelengths mapped on CCD
         SLIT_LOCATION_LSS          FITS image  Background subtracted arc frame
         SPECTRAL_RESOLUTION_LSS    FITS table  Spectral resolution table

OPTIONS

       --dispersion <float>
              Expected  spectral dispersion (Angstrom/pixel) (float; default: 0.0). The full name of this option
              for the EsoRex configuration file is fors.fors_wave_calib_lss.dispersion [default = 0.0].

       --peakdetection <float>
              Initial peak detection threshold (ADU) (float; default: 0.0). The full name of this option for the
              EsoRex configuration file is fors.fors_wave_calib_lss.peakdetection [default = 0.0].

       --wdegree <int>
              Degree  of  wavelength  calibration polynomial (int; default: 0). The full name of this option for
              the EsoRex configuration file is fors.fors_wave_calib_lss.wdegree [default = 0].

       --wradius <int>
              Search radius if iterating pattern-matching with first-guess method (int; default:  4).  The  full
              name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wradius [default
              = 4].

       --wreject <float>
              Rejection threshold in dispersion relation fit (pixel) (float; default: 0.7).  The  full  name  of
              this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wreject [default = 0.7].

       --wcolumn <str>
              Name  of  line catalog table column with wavelengths (str; default: ´WLEN´). The full name of this
              option for the EsoRex configuration file is fors.fors_wave_calib_lss.wcolumn [default = WLEN].

       --startwavelength <float>
              Start wavelength in spectral extraction (float; default: 0.0). The full name of  this  option  for
              the EsoRex configuration file is fors.fors_wave_calib_lss.startwavelength [default = 0.0].

       --endwavelength <float>
              End  wavelength in spectral extraction (float; default: 0.0). The full name of this option for the
              EsoRex configuration file is fors.fors_wave_calib_lss.endwavelength [default = 0.0].

       --wmode <int>
              Interpolation mode of wavelength solution (0 = no interpolation, 1 = fill gaps, 2 = global  model)
              (int;  default:  2).  The  full  name  of  this  option  for  the  EsoRex  configuration  file  is
              fors.fors_wave_calib_lss.wmode [default = 2].

       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 fors pipeline can be downloaded as a PDF file using the following URL:

              ftp://ftp.eso.org/pub/dfs/pipelines/fors/fors-pipeline-manual-4.9.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  fors  pipeline  are fors_align_sky(7), fors_align_sky_lss(7), fors_bias(7),
       fors_calib(7),    fors_config(7),    fors_dark(7),    fors_detect_objects(7),     fors_detect_spectra(7),
       fors_extract(7),  fors_extract_objects(7), fors_extract_slits(7), fors_flatfield(7), fors_img_science(7),
       fors_img_screen_flat(7),      fors_img_sky_flat(7),      fors_normalise_flat(7),      fors_photometry(7),
       fors_pmos_calib(7),  fors_pmos_extract(7),  fors_pmos_science(7),  fors_remove_bias(7), fors_resample(7),
       fors_science(7),  fors_spec_mflat(7),  fors_subtract_sky(7),  fors_subtract_sky_lss(7),  fors_sumflux(7),
       fors_trace_flat(7), fors_wave_calib(7), fors_zeropoint(7)

VERSION

       fors_wave_calib_lss 5.5.7

AUTHOR

       Carlo Izzo <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 currently part of the FORS Instrument Pipeline Copyright  (C)  2002-2010  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  02110-1301  USA