--- name: "naco_spc_wavecal" section: "7" platform: "linux" package: "cpl-plugin-naco-doc" version: "4.4.11+dfsg-1" release: "Debian 12 (Bookworm)" platforms: ["linux"] url: "https://new.carta.tech/naco_spc_wavecal" --- # naco\_spc\_wavecal(7) Wavelength calibration using arc lamps ## NAME naco\_spc\_wavecal - Wavelength calibration using arc lamps ## SYNOPSIS esorex **naco\_spc\_wavecal** \[OPTIONS\] FILE.sof ## DESCRIPTION naco\_spc\_wavecal -- NACO spectrocopy wavelength calibration from lamp images. The files listed in the Set Of Frames (sof-file) must be tagged: NACO-raw-file.fits CAL\_ARC\_SPEC NACO-spectrum-model.fits SPC\_MODEL NACO-arc-lines.fits SPC\_ARGON The input frames are split into groups with identical values of ´ESO DET DIT´, ´ESO INS OPTI1 ID´, ´ESO INS CWLEN´ and ´ESO SEQ SPECMODE´. Furthermore, each input frame must have a value of ESO INS LAMP1 ST that is false for off-frames and true for on-frames. Products: ARC\_MAP: Primary HDU with the wavelength map, i.e. the pixel values are wavelengths. The first extension is a single-row table with the polynomial coefficients of the 2D dispersion relation, lambda = P(x, y). ARC\_IMAGE: Primary HDU with the difference image of the lamp-on and -off image. The first extension is the distortion corrected image, were all the arc-lines are straight. The dispersion in the distortion corrected image is given by the central dispersion, lambda = P(512.5, y). ## OPTIONS - **--plot** *\* The recipe can produce a number of predefined plots. Zero means that none of the plots are produced, while increasing values (e.g. 1 or 2) increases the number of plots produced. If the plotting fails a warning is produced, and the recipe continues. The default behaviour of the plotting is to use gnuplot (with option -persist). The recipe currently produces 1D-plots using gnuplot commands. The recipe user can control the actual plotting-command used by the recipe to create the plot by setting the environment variable CPL\_PLOTTER. Currently, if CPL\_PLOTTER is set it must contain the string ´gnuplot´. Setting it to ´cat \> my\_gnuplot\_$$.txt´ causes a number of ASCII-files to be created, which each produce a plot when given as standard input to gnuplot (e.g. later or on a different computer). A finer control of the plotting options can be obtained by writing an executable script, e.g. my\_gnuplot.pl, that executes gnuplot after setting the desired gnuplot options (e.g. set terminal pslatex color) and then setting CPL\_PLOTTER to my\_gnuplot.pl. The predefined plots include plotting of images. Images can be plotted not only with gnuplot, but also using the pnm format. This is controlled with the environment variable CPL\_IMAGER. If CPL\_IMAGER is set to a string that does not contain the word gnuplot, the recipe will generate the plot in pnm format. E.g. setting CPL\_IMAGER to ´display - &´ will produce a gray-scale image using the image viewer display. (int; default: 0). The full name of this option for the EsoRex configuration file is **naco.naco\_spc\_wavecal.plot** \[default = *0*\]. - **--force** *\* Force the computation (bool; default: False). The full name of this option for the EsoRex configuration file is **naco.naco\_spc\_wavecal.force** \[default = *False*\]. 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. ## SEE ALSO The full documentation for the naco pipeline can be downloaded as a PDF file using the following URL: - **ftp://ftp.eso.org/pub/dfs/pipelines/naco/naco-pipeline-manual-1.1.pdf** An overview over the existing ESO pipelines can be found on the web page **https://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 **https://packages.python.org/python-cpl/index.html** for further information. The other recipes of the naco pipeline are [*naco\_img\_checkfocus*(7)](/naco_img_checkfocus/7.md), [*naco\_img\_dark*(7)](/naco_img_dark/7.md), [*naco\_img\_detlin*(7)](/naco_img_detlin/7.md), [*naco\_img\_jitter*(7)](/naco_img_jitter/7.md), [*naco\_img\_lampflat*(7)](/naco_img_lampflat/7.md), [*naco\_img\_slitpos*(7)](/naco_img_slitpos/7.md), [*naco\_img\_strehl*(7)](/naco_img_strehl/7.md), [*naco\_img\_twflat*(7)](/naco_img_twflat/7.md), [*naco\_img\_zpoint*(7)](/naco_img_zpoint/7.md), [*naco\_spc\_combine*(7)](/naco_spc_combine/7.md), [*naco\_spc\_lampflat*(7)](/naco_spc_lampflat/7.md), [*naco\_util\_img\_std\_cat*(7)](/naco_util_img_std_cat/7.md), [*naco\_util\_spc\_argon*(7)](/naco_util_spc_argon/7.md), [*naco\_util\_spc\_model*(7)](/naco_util_spc_model/7.md) ## VERSION naco\_spc\_wavecal 4.4.11 ## AUTHOR Lars Lundin \ ## BUG REPORTS Please report any problems to usd-help@eso.org. Alternatively, you may send a report to the ESO User Support Department \. ## LICENSE This file is part of the NACO Instrument Pipeline Copyright (C) 2002, 2003, 2005, 2008 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 02111-1307 USA