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       muse_standard - Create a flux response curve from a standard star exposure.


       esorex muse_standard [OPTIONS] FILE.sof


       Merge  pixel  tables from all IFUs and correct for differential atmospheric refraction. To
       derive the flux response curve, integrate the flux of  all  objects  detected  within  the
       field  of view using the given profile. Select one object as the standard star (either the
       brightest or the one nearest one, depending on --select) and compare its  measured  fluxes
       to   tabulated  fluxes  to  derive  the  sensitivity  over  wavelength.  Postprocess  this
       sensitivity curve to mark wavelength ranges affected by telluric  absorption.  Interpolate
       over  the  telluric  regions and derive a telluric correction spectrum for them. The final
       response cuve is then linearly extrapolated to the largest possible MUSE wavelength  range
       and  smoothed  (with  the  method  given  by  --smooth).  The  derivation  of the telluric
       correction spectrum assumes that the star  has  a  smooth  spectrum  within  the  telluric
       regions.  If  there  are more than one exposure given in the input data, the derivation of
       the flux response and telluric corrections are done separately for each exposure. For each
       exposure, an image containing the extracted stellar spectra and the datacube used for flux
       integration are saved, together with collapsed images for each given filter.


       --profile <str>
              Type of flux integration to use. "gaussian" and "moffat" use  2D  profile  fitting,
              circle  and square are non-optimal flux integrators.  (str; default: ´moffat´). The
              full   name   of   this   option   for   the   EsoRex   configuration    file    is
              muse.muse_standard.profile [default = moffat].

       --select <str>
              How  to select the star for flux integration, "flux" uses the brightest star in the
              field, "distance" uses the detection nearest to the approximate coordinates of  the
              reference  source. (str; default: ´distance´). The full name of this option for the
              EsoRex configuration file is [default = distance].

       --smooth <str>
              How to smooth the response curve before writing it to disk. "none" does not do  any
              kind  of  smoothing  (such a response curve is only useful, if smoothed externally;
              "median" does a median-filter of 15 Angstrom  half-width;  "ppoly"  fits  piecewise
              cubic polynomials (each one across 2x150 Angstrom width) postprocessed by a sliding
              average filter of 15 Angstrom half-width. (str; default: ´ppoly´). The full name of
              this option for the EsoRex configuration file is muse.muse_standard.smooth [default
              = ppoly].

       --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_standard.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_standard.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_standard.lambdaref [default = 7000.0].

       --darcheck <str>
              Carry  out  a  check of the theoretical DAR correction using source centroiding. If
              "correct" it will also apply an empirical correction.  (str; default: ´none´).  The
              full    name    of   this   option   for   the   EsoRex   configuration   file   is
              muse.muse_standard.darcheck [default = none].

       --filter <str>
              The filter name(s) to be used for the output field-of-view image. Each name has  to
              correspond to an EXTNAME in an extension of the FILTER_LIST file. If an unsupported
              filter name is given, creation of the respective  image  is  omitted.  If  multiple
              filter  names  are  given,  they  have  to  be comma separated. If the zeropoint QC
              parameters are wanted, make  sure  to  add  "Johnson_V,Cousins_R,Cousins_I".  (str;
              default:  ´white´).  The full name of this option for the EsoRex configuration file
              is muse.muse_standard.filter [default = white].

       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'


       The full documentation for the muse pipeline can be downloaded as a  PDF  file  using  the
       following URL:


       An   overview   over   the   existing   ESO  pipelines  can  be  found  on  the  web  page

       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 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_align(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_twilight(7), muse_wavecal(7)


       muse_standard 2.6.2


       Peter Weilbacher <>


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


       This  file  is  part  of  the  MUSE  Instrument Pipeline Copyright (C) 2005, 2018 European
       Southern Observatory

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       This program is distributed in the hope that it will be useful, but WITHOUT ANY  WARRANTY;
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       See the GNU General Public License for more details.

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