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KMOS_WAVE_CAL(7) kmos recipes KMOS_WAVE_CAL(7)


kmos_wave_cal - Create a wavelength calibration frame


esorex kmos_wave_cal [OPTIONS] FILE.sof


This recipe creates the wavelength calibration frame needed for all three detectors. It must be called after the kmo_flat recipe, which generates the two spatial calibration frames needed in this recipe. As input a lamp-on frame, a lamp-off frame, the spatial calibration frames and the list with the reference arclines are required.

An additional output frame is the resampled image of the reconstructed arc frame. All slitlets of all IFUs are aligned one next to the other. This frame serves for quality control. One can immediately see if the calibration was successful.

The lists of reference arclines are supposed to contain the lines for both available calibration arc-lamps, i.e. Argon and Neon. The list is supposed to be a F2L KMOS FITS file with three columns: 1. Reference wavelength 2. Relative strength 3. String either containing “Ar” or “Ne” The recipe extracts, based on the header keywords, either the applying argon and/or neon emission lines. Below are the plots of the emission lines for both argon and neon. The marked lines are the ones used for wavelength calibration.

Furthermore frames can be provided for several rotator angles. In this case the resulting calibration frames for each detector are repeatedly saved as extension for every angle.


--order The polynomial order to use for the fit of the wavelength solution.

0: (default) The appropriate order is chosen automatically depending on the waveband (4 for IZ band, 5 for HK, 6 for the others)


--b_samples The number of samples in spectral direction for the reconstructed cube.

Ideally this number should be greater than 2048, the detector size.

--suppress_extension If set to TRUE, the arbitrary filename extensions are supressed. If multiple products with the same category are produced, they will be numered consecutively starting from 0.

--lines_estimation If set to TRUE, the lines estimation method is used

Input files:

DO category Type Explanation Required #Frames
----------- ----- ----------- -------- -------
ARC_ON RAW Arclamp-on exposure Y >=1
ARC_OFF RAW Arclamp-off exposure Y 1
XCAL F2D x calibration frame Y 1
YCAL F2D y calibration frame Y 1
ARC_LIST F2L List of arclines Y 1
FLAT_EDGE F2L Fitted edge parameters Y 1
REF_LINES F2L Reference line table Y 1
WAVE_BAND F2L Table with start-/end-wavelengths Y 1

Output files:

DO category Type Explanation
----------- ----- -----------
LCAL F2D Wavelength calibration frame
(3 Extensions)
DET_IMG_WAVE F2D reconstructed arclamp-on exposure
(4 extensions: 3 detector images +
the arclines list table)


The fitting polynomial order used for the wavelength solution. By default, 4 for IZ band, 5 for HK, 6 for the others (int; default: 0). The full name of this option for the EsoRex configuration file is kmos.kmos_wave_cal.order [default = 0].
Suppress arbitrary filename extension (bool; default: False). The full name of this option for the EsoRex configuration file is kmos.kmos_wave_cal.suppress_extension [default = False].
Trigger lines estimation method (bool; default: False). The full name of this option for the EsoRex configuration file is kmos.kmos_wave_cal.lines_estimation [default = False].
The number of samples in wavelength for the reconstructed cube (int; default: 2048). The full name of this option for the EsoRex configuration file is kmos.kmos_wave_cal.b_samples [default = 2048].
Only reduce the specified detector (int; default: 0). The full name of this option for the EsoRex configuration file is kmos.kmos_wave_cal.detector [default = 0].
Only reduce the specified angle (float; default: 370.0). The full name of this option for the EsoRex configuration file is kmos.kmos_wave_cal.angle [default = 370.0].

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.


The full documentation for the kmos 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 kmos pipeline are kmo_arithmetic(7), kmo_copy(7), kmo_fit_profile(7), kmo_fits_strip(7), kmo_make_image(7), kmo_noise_map(7), kmo_rotate(7), kmo_shift(7), kmo_sky_mask(7), kmo_stats(7), kmos_combine(7), kmos_dark(7), kmos_extract_spec(7), kmos_flat(7), kmos_gen_reflines(7), kmos_gen_telluric(7), kmos_illumination(7), kmos_reconstruct(7), kmos_sci_red(7), kmos_sky_tweak(7), kmos_std_star(7), kmos_test(7)


kmos_wave_cal 2.1.0


Alex Agudo Berbel, Yves Jung <>


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


This file is part of the CRIRES Instrument Pipeline Copyright (C) 2002,2003 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

2.1.0 kmos_wave_cal