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kmo_fit_profile - Fit spectral line profiles as well as spatial profiles with a simple function - for example to measure resolution or find the centre of a source


esorex kmo_fit_profile [OPTIONS] FILE.sof


This recipe creates either spectral or spatial profiles of sources using dif- ferent functions to fit. Spectral profiles can be created for F1I frames (if WCS is defined in the input frame, the output parameters are in respect to the defined WCS).

Spatial profiles can be created for F2I frames (any WCS information is ignored here).

If the frames contain no noise information, constant noise is assumed for the fitting procedure.


--method F1I frames can be fitted using either ´gauss´, ´moffat´ or ´lorentz´ function.

F2I frames can be fitted using either ´gauss´ or ´moffat´ function.


--range For F1I frames the spectral range can be defined. With available WCS informa- tion the range can be provided in units (e.g. “1.2;1.5”), otherwise in pixels (e.g. “112;224).

For F2I frames the spatial range can be defined as follow: “x1,x2;y1,y2”

Input files:

category Type Explanation Required #Frames
-------- ----- ----------- -------- -------
<none or any> F1I or Frame with or Y 1
F2I without noise

Output files:

category Type Explanation
-------- ----- -----------
FIT_PROFILE F1I Fitted profile (without noise frame)
or (3 Extensions)


Either fit "gauss", "moffat" or "lorentz" for 1D data.Either fit "gauss" or "moffat" for 2D data. (str; default: ´gauss´). The full name of this option for the EsoRex configuration file is kmos.kmo_fit_profile.method [default = gauss].
The spectral or spatial range to combine. Default is the whole range. e.g. F1I: "0.5,2.1" (microns), e.g. F2I: "1,7;3,10" (pixels: x1,x2;y1,y2), pixels are counted from 1. (str; default: ´´). The full name of this option for the EsoRex configuration file is kmos.kmo_fit_profile.range [default = ].

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_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(7)


kmo_fit_profile 2.1.0


Alex Agudo Berbel <>


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 kmo_fit_profile