NAME

       fors_img_sky_flat - Compute master img_sky_flat frame

SYNOPSIS

       esorex fors_img_sky_flat [OPTIONS] FILE.sof

DESCRIPTION

       Input files:
         DO category:               Type:       Explanation:             Number:
         SKY_FLAT_IMG               Raw         Jittered sky flat fields    1+
         MASTER_BIAS                FITS image  Master bias                 1

       Output files:
         DO category:               Data type:  Explanation:
         MASTER_SKY_FLAT_IMG        FITS image  Master sky flat field

OPTIONS

       --stack_method <str>
              Frames  combination  method  (str; default: ´median´). The full name of this option
              for the EsoRex configuration file is fors.fors_img_sky_flat.stack_method [default =
              median].

       --minrejection <long>
              Number  of  lowest  values to be rejected (long; default: 1). The full name of this
              option for the EsoRex  configuration  file  is  fors.fors_img_sky_flat.minrejection
              [default = 1].

       --maxrejection <long>
              Number  of  highest values to be rejected (long; default: 1). The full name of this
              option for the EsoRex  configuration  file  is  fors.fors_img_sky_flat.maxrejection
              [default = 1].

       --klow <float>
              Low  threshold in ksigma method (float; default: 3.0). The full name of this option
              for the EsoRex configuration file is fors.fors_img_sky_flat.klow [default = 3.0].

       --khigh <float>
              High threshold in ksigma method (float; default: 3.0). The full name of this option
              for the EsoRex configuration file is fors.fors_img_sky_flat.khigh [default = 3.0].

       --kiter <long>
              Max  number  of  iterations in ksigma method (long; default: 999). The full name of
              this option for  the  EsoRex  configuration  file  is  fors.fors_img_sky_flat.kiter
              [default = 999].

       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-4.7.pdf

       An  overview  over  the  existing  ESO  pipelines  can  be   found   on   the   web   page
       http://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
       http://packages.python.org/python-cpl/index.html for further information.

       The other recipes of  the  fors  pipeline  are  fors_wave_calib_lss(7),  fors_resample(7),
       fors_config(7),      fors_extract_objects(7),      fors_calib(7),      fors_wave_calib(7),
       fors_detect_objects(7),  fors_pmos_science(7),  fors_zeropoint(7),  fors_extract_slits(7),
       fors_extract(7),    fors_remove_bias(7),   fors_subtract_sky(7),   fors_normalise_flat(7),
       fors_photometry(7),   fors_img_screen_flat(7),   fors_dark(7),   fors_subtract_sky_lss(7),
       fors_trace_flat(7),    fors_flatfield(7),   fors_img_science(7),   fors_detect_spectra(7),
       fors_sumflux(7),      fors_pmos_extract(7),      fors_align_sky_lss(7),      fors_bias(7),
       fors_align_sky(7), fors_pmos_calib(7), fors_spec_mflat(7), fors_science(7)

VERSION

       fors_img_sky_flat 4.11.12

AUTHOR

       Jonas M. Larsen <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)  2002-2011
       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