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NAME

       naco_img_twflat - Twilight flat recipe

SYNOPSIS

       esorex naco_img_twflat [OPTIONS] FILE.sof

DESCRIPTION

       naco_img_twflat -- NACO imaging flat-field creation from twilight images.

       The files listed in the Set Of Frames (sof-file) must be tagged: raw-file.fits CAL_FLAT_TW
       or raw-or-calib-file.fits CAL_DARK The flat frames are divided  into  groups,  each  group
       having identical instrument settings. Each group of flats is reduced independently of each
       other. For each group of flats, the set of frames shall contain either zero, one or n dark
       frames with the same instrument settings, where n is the number of flats in the group.

OPTIONS

       --r <str>
              Rejected  left  right  bottom  and  top  border [pixel] (str; default: ´200 200 200
              200´). The  full  name  of  this  option  for  the  EsoRex  configuration  file  is
              naco.naco_img_twflat.rej_bord [default = 200 200 200 200].

       --t <str>
              Low  and  high thresholds for the Bad Pixel Map (str; default: ´0.5 2.0´). The full
              name    of    this    option    for    the    EsoRex    configuration    file    is
              naco.naco_img_twflat.thresholds [default = 0.5 2.0].

       --prop <bool>
              Use  the  proportional fit (bool; default: False). The full name of this option for
              the EsoRex configuration file is naco.naco_img_twflat.proport [default = False].

       --bpm <bool>
              Create the bad pixel map (bool; default: False). The full name of this  option  for
              the EsoRex configuration file is naco.naco_img_twflat.bpm [default = False].

       --errmap <bool>
              Create  the  error map (bool; default: False). The full name of this option for the
              EsoRex configuration file is naco.naco_img_twflat.errmap [default = False].

       --intercept <bool>
              Create the intercept image (bool; default: False). The full name of this option for
              the EsoRex configuration file is naco.naco_img_twflat.intercept [default = False].

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

              ftp://ftp.eso.org/pub/dfs/pipelines/naco/naco-pipeline-manual-1.1.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  naco  pipeline  are  naco_img_checkfocus(7),  naco_img_dark(7),
       naco_img_detlin(7),    naco_img_jitter(7),    naco_img_lampflat(7),   naco_img_slitpos(7),
       naco_img_strehl(7),   naco_img_zpoint(7),    naco_spc_combine(7),    naco_spc_lampflat(7),
       naco_spc_wavecal(7),           naco_util_img_std_cat(7),           naco_util_spc_argon(7),
       naco_util_spc_model(7)

VERSION

       naco_img_twflat 4.4.6

AUTHOR

       Lars Lundin <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  part  of the NACO Instrument Pipeline Copyright (C) 2002, 2003, 2005, 2008
       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