esorex vmifustandard [OPTIONS] FILE.sof


This recipe extracts IFU standard star fiber spectra using the input extraction mask, after aligning it to the brightest fiber spectra detected on the input exposure. The extracted spectra are then resampled at a constant wavelength step, after aligning the input wavelength calibration to the positions of a set of identified sky lines. The extracted spectra are finally corrected for the relative differences in transmission from fiber to fiber, and summed together.

Input files:

  DO category:            Type:       Explanation:           Required:
  IFU_STANDARD            Raw         Standard star spectra     Y
  MASTER_BIAS             Calib       Master bias               Y
  IFU_TRACE               Calib       Extraction mask           Y
  IFU_IDS                 Calib       Wavelength calibration    Y
  IFU_TRANSMISSION        Calib       Transmission correction   Y
  EXTINCT_TABLE           Calib       Atmospheric extinction    Y
  STD_FLUX_TABLE          Calib       Standard star fluxes      Y
  CCD_TABLE               Calib       Bad pixel table           .

Output files:

  DO category:            Data type:  Explanation:
  IFU_STANDARD_REDUCED    FITS image  Reduced standard star spectra
  IFU_FOV                 FITS image  Reconstructed field-of-view image
  IFU_STANDARD_EXTRACTED  FITS table  Total standard star spectrum
  IFU_SCIENCE_SKY         FITS table  Total sky spectrum
  IFU_SPECPHOT_TABLE      FITS table  Efficiency and response curves

The extraction mask, the wavelength calibration, and the relative transmission table, are those generated by the recipe vmifucalib. A CCD table must be specified only if a bad pixel cleaning is requested.

The spectra extracted from the fibers on the standard star are added and compared to the catalog fluxes of the same star, to obtain the efficiency curve and the response curve to use for flux calibration.

The procedure is the same as the one applied in the case of MOS data, by recipe vmmosstandard.


--BiasMethod <str>

Bias removal method. (str; default: \'Zmaster\'). The full name of this option for the EsoRex configuration file is vimos.Parameters.bias.removing.method [default = Zmaster].

--CleanBadPixel <bool>

Bad pixel correction on master flat field. (bool; default: False). The full name of this option for the EsoRex configuration file is vimos.Parameters.badpixel.clean [default = False].

--UseSkylines <bool>

Use sky lines to refine the wavelength calibration (bool; default: True). The full name of this option for the EsoRex configuration file is [default = True].

--ResponseOrder <long>

Order of the polynomial used to smooth the instrument response curve. (long; default: 5). The full name of this option for the EsoRex configuration file is vimos.Parameters.response.order [default = 5].

--ReduceAnyFrame <bool>

Reduce any frame. (bool; default: False). The full name of this option for the EsoRex configuration file is vimos.Parameters.reduceall [default = False].

--ComputeQC <bool>

Compute QC1 parameters (bool; default: True). The full name of this option for the EsoRex configuration file is vimos.Parameters.quality.enable [default = True].

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.

RELATED TO vmifustandard…

The full documentation for the vimos 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 vimos pipeline are vmifucombinecube(7), vmifucalib(7), vmimflatsky(7), vmspflat(7), vmmosobsstare(7), vmimflatscreen(7), vmimpreimaging(7), vmimcalphot(7), vmmoscombine(7), vmimstandard(7), vmmosobsjitter(7), vmifucombine(7), vmimobsjitter(7), vmspphot(7), vmdet(7), vmmosscience(7), vmmosstandard(7), vmspcaldisp(7), vmbias(7), vmmoscalib(7), vmimobsstare(7), vmdark(7), vmifuscience(7)


vmifustandard 2.9.15


ESO VIMOS Pipeline Team <[email protected]>


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


This file is part of the VIMOS Instrument Pipeline Copyright (C) 2002-2005 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