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       naco_img_checkfocus - Focus check recipe


       esorex naco_img_checkfocus [OPTIONS] FILE.sof


       naco_img_checkfocus -- The focus checking recipe The Set Of Frames (sof-file) must specify
       at least four files and they must be tagged NACO-raw-file.fits TECH_FOCUS The first of the
       files is used as a dark frame.


       --plot <long>
              The  recipe  can  produce a number of predefined plots. Zero means that none of the
              plots are produced, while increasing values (e.g. 1 or 2) increases the  number  of
              plots  produced.  If  the  plotting  fails  a  warning  is produced, and the recipe
              continues. The default behaviour of the plotting is to  use  gnuplot  (with  option
              -persist).  The  recipe  currently  produces  1D-plots  using gnuplot commands. The
              recipe user can control the actual plotting-command used by the  recipe  to  create
              the plot by setting the environment variable CPL_PLOTTER. Currently, if CPL_PLOTTER
              is  set  it  must  contain  the  string   ´gnuplot´.   Setting   it   to   ´cat   >
              my_gnuplot_$$.txt´ causes a number of ASCII-files to be created, which each produce
              a plot when given as standard input to  gnuplot  (e.g.  later  or  on  a  different
              computer).  A  finer  control of the plotting options can be obtained by writing an
              executable script, e.g., that  executes  gnuplot  after  setting  the
              desired  gnuplot  options  (e.g.  set  terminal  pslatex  color)  and  then setting
              CPL_PLOTTER to The predefined  plots  include  plotting  of  images.
              Images can be plotted not only with gnuplot, but also using the pnm format. This is
              controlled with the environment variable CPL_IMAGER. If  CPL_IMAGER  is  set  to  a
              string that does not contain the word gnuplot, the recipe will generate the plot in
              pnm format. E.g.  setting CPL_IMAGER to ´display - &´  will  produce  a  gray-scale
              image  using  the  image  viewer display. (long; default: 0). The full name of this
              option for the EsoRex configuration file is naco.naco_img_checkfocus.plot  [default
              = 0].

       --star_r <float>
              The star radius [arcsecond] (float; default: 2.0). The full name of this option for
              the EsoRex configuration file is naco.naco_img_checkfocus.star_r [default = 2.0].

       --bg_r1 <float>
              The internal radius of the background [arcsecond] (float; default: 2.0).  The  full
              name    of    this    option    for    the    EsoRex    configuration    file    is
              naco.naco_img_checkfocus.bg_r1 [default = 2.0].

       --bg_r2 <float>
              The external radius of the background [arcsecond] (float; default: 3.0).  The  full
              name    of    this    option    for    the    EsoRex    configuration    file    is
              naco.naco_img_checkfocus.bg_r2 [default = 3.0].

       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'


       The full documentation for the naco pipeline can be downloaded as a  PDF  file  using  the
       following URL:


       An   overview   over   the   existing   ESO  pipelines  can  be  found  on  the  web  page

       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 for further information.

       The   other  recipes  of  the  naco  pipeline  are  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_twflat(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_img_checkfocus 4.4.1


       Lars Lundin <>


       Please report any problems to Alternatively, you may send a report to the
       ESO User Support Department <>.


       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