.TH VIMOS_IMA_BIAS "7" "4.1.7" "vimos_ima_bias" "vimos recipes"
.SH NAME
vimos_ima_bias \- Bias combination for imaging

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

.SH DESCRIPTION
vimos_ima_bias \-\- VIMOS bias combine recipe.
.PP

Combine a list of bias frames into a mean bias frame. Optionally compare 
the output frame to a reference bias frame

The program accepts the following files in the SOF:

    Tag                   Description
    
    BIAS                  A list of raw bias images
    REFERENCE_BIAS        Optional reference bias frame
If no reference bias frame is made available, then no comparison will
be done. This means there will be no output difference image or stats table. 


.SH OPTIONS
.TP
\fB\-\-combtype\fR \fI<str>\fR
Combination algorithm (str; default: \'median\'). The full name of this option for the EsoRex configuration
file is \fBvimos.vimos_ima_bias.combtype\fR [default = \fImedian\fR].
.TP
\fB\-\-xrej\fR \fI<bool>\fR
True if using extra rejection cycle (bool; default: True). The full name of this option for the EsoRex configuration
file is \fBvimos.vimos_ima_bias.xrej\fR [default = \fITrue\fR].
.TP
\fB\-\-thresh\fR \fI<float>\fR
Rejection threshold in sigma above background (float; default: 5.0). The full name of this option for the EsoRex configuration
file is \fBvimos.vimos_ima_bias.thresh\fR [default = \fI5.0\fR].
.TP
\fB\-\-ncells\fR \fI<int>\fR
Number of cells for diff image stats (int; default: 64). The full name of this option for the EsoRex configuration
file is \fBvimos.vimos_ima_bias.ncells\fR [default = \fI64\fR].
.TP
\fB\-\-prettynames\fR \fI<bool>\fR
Use pretty output file names? (bool; default: False). The full name of this option for the EsoRex configuration
file is \fBvimos.vimos_ima_bias.prettynames\fR [default = \fIFalse\fR].

.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 vimos pipeline can be downloaded as 
a PDF file using the following URL:
.IP
.B ftp://ftp.eso.org/pub/dfs/pipelines/vimos/vimos\-pipeline\-manual\-6.9.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 vimos pipeline are
.IR vimos_ima_dark (7),
.IR vimos_ima_det_noise (7),
.IR vimos_ima_fringe (7),
.IR vimos_ima_science (7),
.IR vimos_ima_standard (7),
.IR vimos_ima_twilight_flat (7),
.IR vmbias (7),
.IR vmdark (7),
.IR vmdet (7),
.IR vmifucalib (7),
.IR vmifucombine (7),
.IR vmifucombinecube (7),
.IR vmifuscience (7),
.IR vmifustandard (7),
.IR vmmoscalib (7),
.IR vmmosscience (7),
.IR vmspphot (7)

.SH VERSION
vimos_ima_bias 4.1.7

.SH AUTHOR
Jim Lewis <jrl@ast.cam.ac.uk>

.SH BUG REPORTS
Please report any problems to jrl@ast.cam.ac.uk. Alternatively, you may send a report to the ESO User Support Department <usd\-help@eso.org>.

.SH LICENSE
This file is part of the VIMOS Instrument Pipeline
Copyright (C) 2019 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., 59 Temple Place, Suite 330, Boston, 
MA  02111\-1307  USA