NAME

       visir_img_ff - Flat field recipe

SYNOPSIS

       esorex visir_img_ff [OPTIONS] FILE.sof

DESCRIPTION

       This recipe computes the flatfield.

       The   files   listed   in   the   Set   Of   Frames   (sof-file)  must  be  tagged  either
       VISIR-flatfield-raw-file.fits IM_CAL_FLAT or VISIR-flatfield-raw-file.fits IM_TECH_FLAT or
       VISIR-flatfield-raw-file.fits      SPEC_CAL_FLAT      or     VISIR-flatfield-raw-file.fits
       SPEC_TECH_FLAT

       The corresponding primary product will have a FITS card ´HIERARCH ESO  PRO  CATG´  with  a
       value of IMG_FF or IMG_FF_TECH or SPEC_FF or SPEC_FF_TECH

OPTIONS

       --low <float>
              Low  threshold  for  the bad pixel map (float; default: 0.2). The full name of this
              option for the EsoRex configuration file is visir.visir_img_ff.low [default = 0.2].

       --high <float>
              High threshold for the bad pixel map (float; default: 5.0). The full name  of  this
              option  for  the  EsoRex  configuration  file is visir.visir_img_ff.high [default =
              5.0].

       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_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_spc_wcal_ech(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_img_ff 4.4.2

AUTHOR

       Lars Lundin <https://support.eso.org>

BUG REPORTS

       Please report any problems to  https://support.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