fors_wave_calib_lss (7)

esorex fors_wave_calib_lss [OPTIONS] FILE.sof

This recipe is used to wavelength calibrate one long slit spectrum, i.e., a FORS spectral obtained either in LSS mode or in MOS/MXU mode with all slits at the same offset. A pattern-matching algorithm is applied as in recipe fors_detect_spectra. For more details on this data reduction strategy please refer to the FORS Pipeline User\'s Manual.

Note that specifying an input GRISM_TABLE will set some of the recipe configuration parameters to default values valid for a particular grism.

In the table below the LSS acronym can be alternatively read as MOS or MXU.

Input files:

  DO category:               Type:       Explanation:         Required:
  LAMP_UNBIAS_LSS            Calib       Arc lamp exposure       Y
  MASTER_LINECAT             Calib       Line catalog            Y
  GRISM_TABLE                Calib       Grism table             .

Output files:

  DO category:               Data type:  Explanation:
  REDUCED_LAMP_LSS           FITS image  Calibrated arc lamp exposure
  DISP_COEFF_LSS             FITS table  Inverse dispersion coefficients
  DISP_RESIDUALS_LSS         FITS image  Image of modeling residuals
  WAVELENGTH_MAP_LSS         FITS image  Wavelengths mapped on CCD
  SLIT_LOCATION_LSS          FITS image  Background subtracted arc frame
  SPECTRAL_RESOLUTION_LSS    FITS table  Spectral resolution table

--dispersion <float>

Expected spectral dispersion (Angstrom/pixel) (float; default: 0.0). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.dispersion [default = 0.0].

--peakdetection <float>

Initial peak detection threshold (ADU) (float; default: 0.0). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.peakdetection [default = 0.0].

--wdegree <long>

Degree of wavelength calibration polynomial (long; default: 0). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wdegree [default = 0].

--wradius <long>

Search radius if iterating pattern-matching with first-guess method (long; default: 4). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wradius [default = 4].

--wreject <float>

Rejection threshold in dispersion relation fit (pixel) (float; default: 0.7). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wreject [default = 0.7].

--wcolumn <str>

Name of line catalog table column with wavelengths (str; default: \'WLEN\'). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wcolumn [default = WLEN].

--startwavelength <float>

Start wavelength in spectral extraction (float; default: 0.0). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.startwavelength [default = 0.0].

--endwavelength <float>

End wavelength in spectral extraction (float; default: 0.0). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.endwavelength [default = 0.0].

--wmode <long>

Interpolation mode of wavelength solution (0 = no interpolation, 1 = fill gaps, 2 = global model) (long; default: 2). The full name of this option for the EsoRex configuration file is fors.fors_wave_calib_lss.wmode [default = 2].

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 fors pipeline can be downloaded as a PDF file using the following URL:

• ftp://ftp.eso.org/pub/dfs/pipelines/fors/fors-pipeline-manual-4.9.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 fors pipeline are fors_img_sky_flat(7), fors_resample(7), fors_config(7), fors_extract_objects(7), fors_calib(7), fors_wave_calib(7), fors_detect_objects(7), fors_pmos_science(7), fors_extract_slits(7), test_hough(7), fors_img_screen_flat(7), fors_extract(7), fors_remove_bias(7), fors_subtract_sky(7), fors_normalise_flat(7), montecarlo(7), fors_photometry(7), fors_zeropoint(7), fors_dark(7), fors_subtract_sky_lss(7), fors_trace_flat(7), fors_flatfield(7), fors_img_science(7), fors_detect_spectra(7), fors_sumflux(7), fors_pmos_extract(7), fors_align_sky_lss(7), fors_bias(7), fors_align_sky(7), fors_pmos_calib(7), fors_spec_mflat(7), fors_science(7)

fors_wave_calib_lss 5.0.0

Carlo Izzo <[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 currently part of the FORS Instrument Pipeline Copyright (C) 2002-2010 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