Provided by: cpl-plugin-muse-doc_2.2+dfsg-2_all 
NAME
muse_create_sky - Create night sky model from selected pixels of an exposure of empty sky.
SYNOPSIS
esorex muse_create_sky [OPTIONS] FILE.sof
DESCRIPTION
This recipe creates the continuum and the atmospheric transition line spectra of the night sky from the
data in a pixel table(s) belonging to one exposure of (mostly) empty sky.
OPTIONS
--fraction <float>
Fraction of the image (without the ignored part) to be considered as sky. If an input sky mask is
provided, the fraction is applied to the regions within the mask. If the whole sky mask should be
used, set this parameter to 1. (float; default: 0.75). The full name of this option for the EsoRex
configuration file is muse.muse_create_sky.fraction [default = 0.75].
--ignore <float>
Fraction of the image to be ignored. If an input sky mask is provided, the fraction is applied to
the regions within the mask. If the whole sky mask should be used, set this parameter to 0.
(float; default: 0.05). The full name of this option for the EsoRex configuration file is
muse.muse_create_sky.ignore [default = 0.05].
--sampling <float>
Spectral sampling of the sky spectrum [Angstrom]. (float; default: 0.3125). The full name of this
option for the EsoRex configuration file is muse.muse_create_sky.sampling [default = 0.3125].
--csampling <float>
Spectral sampling of the continuum spectrum [Angstrom]. (float; default: 0.3125). The full name of
this option for the EsoRex configuration file is muse.muse_create_sky.csampling [default =
0.3125].
--crsigma <str>
Sigma level clipping for cube-based and spectrum-based CR rejection. This has to be a string of
two comma-separated floating-point numbers. The first value gives the sigma-level rejection for
cube-based CR rejection (using "median", see muse_scipost), the second value the sigma-level for
spectrum-based CR cleaning. Both can be switched off, by passing zero or a negative value; by
default, the spectrum-based rejection is switched off. (str; default: ´15.,15.´). The full name of
this option for the EsoRex configuration file is muse.muse_create_sky.crsigma [default = 15.,15.].
--lambdamin <float>
Cut off the data below this wavelength after loading the pixel table(s). (float; default: 4000.0).
The full name of this option for the EsoRex configuration file is muse.muse_create_sky.lambdamin
[default = 4000.0].
--lambdamax <float>
Cut off the data above this wavelength after loading the pixel table(s). (float; default:
10000.0). The full name of this option for the EsoRex configuration file is
muse.muse_create_sky.lambdamax [default = 10000.0].
--lambdaref <float>
Reference wavelength used for correction of differential atmospheric refraction. The R-band (peak
wavelength ~7000 Angstrom) that is usually used for guiding, is close to the central wavelength of
MUSE, so a value of 7000.0 Angstrom should be used if nothing else is known. A value less than
zero switches DAR correction off. (float; default: 7000.0). The full name of this option for the
EsoRex configuration file is muse.muse_create_sky.lambdaref [default = 7000.0].
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.
SEE ALSO
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-2.2.0.pdf
An overview over the existing ESO pipelines can be found on the web page
http://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
http://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_dark(7),
muse_exp_align(7), muse_exp_combine(7), muse_flat(7), muse_geometry(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_subtract_sky(7),
muse_scipost_subtract_sky_simple(7), muse_standard(7), muse_twilight(7), muse_wavecal(7)
VERSION
muse_create_sky 2.2.0
AUTHOR
Ole Streicher <usd-help@eso.org>
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>.
LICENSE
This file is part of the MUSE Instrument Pipeline Copyright (C) 2005, 2017 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
muse_create_sky 2.2.0 MUSE_CREATE_SKY(7)