fors_flatfield(7) Flat field correction of input frame


esorex fors_flatfield [OPTIONS] FILE.sof


This recipe is used to divide the input frame by the normalised flat field frame produced by recipe fors_normalise_flat. The input frame must be already bias subtracted (e.g., by recipe fors_remove_bias).

In the table below the MXU acronym can be alternatively read as MOS and LSS.

Input files:

  DO category:               Type:       Explanation:         Required:
  or STANDARD_UNBIAS_MXU     Raw         Bias subtracted frame   Y
  MASTER_NORM_FLAT_MXU       Calib       Normalised flat frame   Y

Output files:

  DO category:               Data type:  Explanation:
  or STANDARD_UNFLAT_MXU     FITS image  Flat field corrected frame


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.


fors_flatfield 5.3.5


Carlo Izzo <[email protected]>


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


This file is currently part of the FORS Instrument Pipeline Copyright (C) 2002-2010 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