Creates a master bias image from a set of raw biases.
For detailed information please refer to the GIRAFFE pipeline user manual.
It is available at http://www.eso.org/pipelines.
Create an object for the recipe gimasterbias.
import cpl
gimasterbias = cpl.Recipe("gimasterbias")
Stacking method: average, median, minmax or ksigma (str; default: ‘average’) [default=”average”].
Lower threshold multiplier for method ksigma (float; default: 5.0) [default=5.0].
Upper threshold multiplier for method ksigma (float; default: 5.0) [default=5.0].
Minimum rejection level for method minmax (long; default: 1) [default=1].
Maximum rejection level for method minmax (long; default: 1) [default=1].
Remove pre- and over-scan regions from the created master bias image. (bool; default: False) [default=False].
Correct master bias image for bad pixels (bool; default: False) [default=False].
Create bad pixel map using a simple thresholding algorithm. (temporary!) (bool; default: True) [default=True].
Readout noise multiplier defining the valid range of pixel values for searching bad pixels. (float; default: 5.0) [default=5.0].
Maximum fraction of pixels which may be flagged as ‘bad. If more pixels are found to be ‘bad a warning is issued. (float; default: 0.15) [default=0.15].
The following code snippet shows the default settings for the available parameters.
import cpl
gimasterbias = cpl.Recipe("gimasterbias")
gimasterbias.param.stack_method = "average"
gimasterbias.param.stack_ksigmalow = 5.0
gimasterbias.param.stack_ksigmahigh = 5.0
gimasterbias.param.stack_minreject = 1
gimasterbias.param.stack_maxreject = 1
gimasterbias.param.mbias_oscremove = False
gimasterbias.param.mbias_bpxclean = False
gimasterbias.param.bpm_create = True
gimasterbias.param.bpm_factor = 5.0
gimasterbias.param.bpm_frac = 0.15
You may also set or overwrite some or all parameters by the recipe parameter param, as shown in the following example:
import cpl
gimasterbias = cpl.Recipe("gimasterbias")
[...]
res = gimasterbias( ..., param = {"stack_method":"average", "stack_ksigmalow":5.0})
See also
cpl.Recipe for more information about the recipe object.
Please report any problems to Giraffe Pipeline. Alternatively, you may send a report to the ESO User Support Department.
This file is part of the GIRAFFE Instrument Pipeline Copyright (C) 2002-2006 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
Code author: Giraffe Pipeline <usd-help@eso.org>