.TH FORS_REMOVE_BIAS "7" "5.5.7" "fors_remove_bias" "fors recipes"
.SH NAME
fors_remove_bias \- Subtract bias from input frame

.SH SYNOPSIS
esorex
.B fors_remove_bias
[OPTIONS] FILE.sof

.SH DESCRIPTION
This recipe is used to subtract the overscan and master bias(produced by the recipe fors_bias) from one raw data frame. The overscan regions, if present, are
used to compensate for variations of the overall bias level between master bias
and input raw frame. The overscan regions are then trimmed from the result.
.PP
The recipe should allow any fors frame.
.PP

Input files:

  DO category:               Type:       Explanation:         Required:
  ANY_CAT
                  Raw         Raw data frame          Y
  MASTER_BIAS                Calib       Master bias frame       Y

Output files:

  DO category:               Data type:  Explanation:
  ANY_CAT_UNBIAS             FITS image  Bias subtracted frame



.SH OPTIONS

.PP
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.

.SH SEE ALSO
The full documentation for the fors pipeline can be downloaded as 
a PDF file using the following URL:
.IP
.B ftp://ftp.eso.org/pub/dfs/pipelines/fors/fors\-pipeline\-manual\-4.9.pdf
.PP
An overview over the existing ESO pipelines can be found on the web page
\fBhttps://www.eso.org/sci/software/pipelines/\fR.
.PP
Basic documentation about the EsoRex program can be found at the esorex (1) 
man page.
.PP
It is possible to call the pipelines from python using the python\-cpl package.
See \fBhttps://packages.python.org/python\-cpl/index.html\fR for further
information.
.PP
The other recipes of the fors pipeline are
.IR fors_align_sky (7),
.IR fors_align_sky_lss (7),
.IR fors_bias (7),
.IR fors_calib (7),
.IR fors_config (7),
.IR fors_dark (7),
.IR fors_detect_objects (7),
.IR fors_detect_spectra (7),
.IR fors_extract (7),
.IR fors_extract_objects (7),
.IR fors_extract_slits (7),
.IR fors_flatfield (7),
.IR fors_img_science (7),
.IR fors_img_screen_flat (7),
.IR fors_img_sky_flat (7),
.IR fors_normalise_flat (7),
.IR fors_photometry (7),
.IR fors_pmos_calib (7),
.IR fors_pmos_extract (7),
.IR fors_pmos_science (7),
.IR fors_resample (7),
.IR fors_science (7),
.IR fors_spec_mflat (7),
.IR fors_subtract_sky (7),
.IR fors_subtract_sky_lss (7),
.IR fors_sumflux (7),
.IR fors_trace_flat (7),
.IR fors_wave_calib (7),
.IR fors_wave_calib_lss (7),
.IR fors_zeropoint (7)

.SH VERSION
fors_remove_bias 5.5.7

.SH AUTHOR
Carlo Izzo <usd\-help@eso.org>

.SH 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>.

.SH 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