muse_exp_align - Create a coordinate offset table to be used to
align exposures during exposure combination.
esorex muse_exp_align [OPTIONS] FILE.sof
Compute the coordinate offset for each input field-of-view image
with respect to a reference. The created list of coordinate offsets can then
be used in muse_exp_combine as the field coordinate offsets to properly
align the exposures during their combination. The source positions used to
compute the field offsets are obtained by detecting point sources in each of
the input images, unless the source detection is overridden and an input
source list is available for each input field-of-view image. In this latter
case the input source positions are used to calculate the field offsets.
- --rsearch
<str>
- Search radius (in arcsec) for each iteration of the offset computation.
(str; default: ´30.,4.,2.,0.8´). The full name of this
option for the EsoRex configuration file is
muse.muse_exp_align.rsearch [default = 30.,4.,2.,0.8].
- --nbins
<int>
- Number of bins to use for 2D histogram on the first iteration of the
offset computation. (int; default: 60). The full name of this option for
the EsoRex configuration file is muse.muse_exp_align.nbins [default
= 60].
- --weight
<bool>
- Use weighting. (bool; default: True). The full name of this option for the
EsoRex configuration file is muse.muse_exp_align.weight [default =
True].
- --fwhm
<float>
- FWHM in pixels of the convolution filter. (float; default: 5.0). The full
name of this option for the EsoRex configuration file is
muse.muse_exp_align.fwhm [default = 5.0].
- --threshold
<float>
- Initial intensity threshold for detecting point sources. If the value is
negative or zero the threshold is taken as sigma above median background
MAD. If it is larger than zero the threshold is taken as absolute
background level. (float; default: 15.0). The full name of this option for
the EsoRex configuration file is muse.muse_exp_align.threshold
[default = 15.0].
- --bkgignore
<float>
- Fraction of the image to be ignored. (float; default: 0.05). The full name
of this option for the EsoRex configuration file is
muse.muse_exp_align.bkgignore [default = 0.05].
- --bkgfraction
<float>
- Fraction of the image (without the ignored part) to be considered as
background. (float; default: 0.1). The full name of this option for the
EsoRex configuration file is muse.muse_exp_align.bkgfraction
[default = 0.1].
- --step
<float>
- Increment/decrement of the threshold value in subsequent iterations.
(float; default: 0.5). The full name of this option for the EsoRex
configuration file is muse.muse_exp_align.step [default =
0.5].
- --iterations
<int>
- Maximum number of iterations used for detecting sources. (int; default:
100000). The full name of this option for the EsoRex configuration file is
muse.muse_exp_align.iterations [default = 100000].
- --srcmin
<int>
- Minimum number of sources which must be found. (int; default: 5). The full
name of this option for the EsoRex configuration file is
muse.muse_exp_align.srcmin [default = 5].
- --srcmax
<int>
- Maximum number of sources which may be found. (int; default: 80). The full
name of this option for the EsoRex configuration file is
muse.muse_exp_align.srcmax [default = 80].
- --roundmin
<float>
- Lower limit of the allowed point-source roundness. (float; default: -1.0).
The full name of this option for the EsoRex configuration file is
muse.muse_exp_align.roundmin [default = -1.0].
- --roundmax
<float>
- Upper limit of the allowed point-source roundness. (float; default: 1.0).
The full name of this option for the EsoRex configuration file is
muse.muse_exp_align.roundmax [default = 1.0].
- --sharpmin
<float>
- Lower limit of the allowed point-source sharpness. (float; default: 0.2).
The full name of this option for the EsoRex configuration file is
muse.muse_exp_align.sharpmin [default = 0.2].
- --sharpmax
<float>
- Upper limit of the allowed point-source sharpness. (float; default: 1.0).
The full name of this option for the EsoRex configuration file is
muse.muse_exp_align.sharpmax [default = 1.0].
- --expmap
<bool>
- Enables the creation of a simple exposure map for the combined field-
of-view. (bool; default: False). The full name of this option for the
EsoRex configuration file is muse.muse_exp_align.expmap [default =
False].
- --bpixdistance
<float>
- Minimum allowed distance of a source to the closest bad pixel in pixel.
Detected sources which are closer to a bad pixel are not taken into
account when computing the field offsets. This option has no effect if the
source positions are taken from input catalogs. (float; default: 5.0). The
full name of this option for the EsoRex configuration file is
muse.muse_exp_align.bpixdistance [default = 5.0].
- --override_detection
<bool>
- Overrides the source detection step. If this is enabled and source
catalogs are present in the input data set, the source positions used to
calculate the field offsets are read from the input catalogs. If no
catalogs are available as input data the source positions are detected on
the input images. (bool; default: False). The full name of this option for
the EsoRex configuration file is
muse.muse_exp_align.override_detection [default = False].
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.
The full documentation for the muse pipeline can be downloaded as
a PDF file using the following URL:
- ftp://ftp.eso.org/pub/dfs/pipelines/muse/muse-pipeline-cookbook-2.8.7.pdf
An overview over the existing ESO pipelines can be found on the
web page https://www.eso.org/sci/software/pipelines/.
Basic documentation about the EsoRex program can be found at the
esorex (1) man page.
It is possible to call the pipelines from python using the
python-cpl package. See
https://packages.python.org/python-cpl/index.html for further
information.
The other recipes of the muse pipeline are muse_ampl(7),
muse_astrometry(7), muse_bias(7), muse_create_sky(7),
muse_dark(7), muse_exp_combine(7), muse_flat(7),
muse_geometry(7), muse_illum(7), muse_lingain(7),
muse_lsf(7), muse_qi_mask(7), muse_scibasic(7),
muse_scipost(7), muse_scipost_apply_astrometry(7),
muse_scipost_calibrate_flux(7),
muse_scipost_combine_pixtables(7),
muse_scipost_correct_dar(7), muse_scipost_correct_rv(7),
muse_scipost_make_cube(7), muse_scipost_raman(7),
muse_scipost_subtract_sky(7),
muse_scipost_subtract_sky_simple(7), muse_standard(7),
muse_twilight(7), muse_wavecal(7)
Ralf Palsa <https://support.eso.org>
Please report any problems to https://support.eso.org.
Alternatively, you may send a report to the ESO User Support Department
<usd-help@eso.org>.
This file is part of the MUSE Instrument Pipeline Copyright (C)
2005, 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., 51 Franklin St, Fifth Floor, Boston, MA 02111-1307 USA