NAME

       fors_bias - Compute the master bias frame

SYNOPSIS

       esorex fors_bias [OPTIONS] FILE.sof

DESCRIPTION

       This  recipe  is  used  to  combine  input  raw  BIAS frames into a master bias frame. The
       overscan regions, if present, are removed from the result.

       Input files:

         DO category:               Type:       Explanation:         Required:
         BIAS                       Raw         Bias frame              Y

       Output files:

         DO category:               Data type:  Explanation:
         MASTER_BIAS                FITS image  Master bias frame

OPTIONS

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

       --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_bias.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_bias.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_bias.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_bias.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_bias.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_img_sky_flat(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_align_sky(7), fors_pmos_calib(7), fors_spec_mflat(7), fors_science(7)

VERSION

       fors_bias 4.11.12

AUTHOR

       Jonas M. Larsen, 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) 2002-2011
       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