muse_create_sky(7) 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.

VERSION

muse_create_sky 1.6.2

AUTHOR

Ole Streicher <[email protected]>

BUG REPORTS

Please report any problems to [email protected] Alternatively, you may send a report to the ESO User Support Department <[email protected]>.

LICENSE

This file is part of the MUSE Instrument Pipeline Copyright (C) 2005, 2015 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