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

visir_img_ff                                          4.4.2                                      VISIR_IMG_FF(7)