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 4.4.11

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