meanbias(1)

NAME
meanbias - utility for making master-bias frames

SYNOPSIS
meanbias [ options ] output-file input-files ...

DESCRIPTION
The meanbias command compose a set of bias frames and makes one bias frame called 'master-bias'. Applying this function, you can achieve high quality correction frame and    thus reducing the noise of a result. The bias correction is applied in advanced calibration scheme only, please refer to documentation about the calibration of CCD frames.

All source frames must be in the FITS format and of same dimensions. The output file is written in the FITS format too.

INPUT FILES
Names of input files can be specified directly on a command-line as command arguments; it is allowed to use the usual wild-card notation. In case the input files are placed outside the working directory, you have to specify the proper path relative to the current working directory.

Alternatively, you can also prepare a list of input file names in a text file, each input file on a separate line. It is not allowed to use the wild-card notation here. Use the -i option to instruct the program to read the file.

OPTIONS
Options are used to provide extra information to customize the execution of a command. They are specified as command arguments.

Each option has a full form starting with two dashes and an optional short form starting with one dash only. Options are case-sensitive. It is allowed to merge two or more successive short options together. Some options require a value; in this case a value is taken from a subsequent argument. When a full form is used, an option and its value can also be separated by an equal sign. When a short form is used, its value can immediately follow the option.

Whenever there is a conflict between a configuration file parameter and an option of the same meaning, the option always take precedence.

-s, --set name=value
    set value of configuration parameter

-i, --read-dirfile filepath
    read list of input files from specified directory file; see the Files section for details.

-p, --configuration-file filepath
    read parameters from given configuration file. See the Configuration file section for details.

-h, --help
    print list of command-line parameters

-q, --quiet
    quiet mode; suppress all messages

--version
    print software version string

--licence
    print software licence

--verbose
    verbose mode; print debug messages

CONFIGURATION FILE
Configuration files are used to set the input parameters to the process that is going to be executed by a command. Use the -p option to instruct the program to read the file before other command-line options are processed.

The configuration file consists of a set of parameters stored in a text file. Each parameter is stored on a separate line in the following form: name = value, all other lines are silently ignored. Parameter names are case-sensitive.

bitpix = value
    output data format (0=Auto)

EXAMPLES

meanbias out.fts in1.fts in2.fts in3.fts
    The command computes the master-bias frame from the input files in1.fts, in2.fts a in3.fts; the resulting frame is stored to output file out.fts.

EXIT STATUS
The command returns a zero exit status if it succeeds to process all specified files. Otherwise, it will stop immediately when an error occurs and a nonzero error code is returned.

HOME PAGE
http://c-munipack.sourceforge.net/

BUG REPORTS
David Motl, dmotl@volny.cz

COPYING
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

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.

SEE ALSO
cmunipack(3), muniwin(1), meandark(1), autoflat(1), biasbat(1), darkbat(1), flatbat(1), timebat(1), airmass(1), helcor(1), kombine(1), konve(1), muniphot(1), munimatch(1), munilist(1), munifind(1)