visir_old_spc_wcal_ech - Old DRS detector: Spectroscopic wavelength calibration recipe in Echelle
esorex visir_old_spc_wcal_ech [OPTIONS] FILE.sof
This recipe estimates the dispersion relation using the atmospheric spectrum in a grism spectroscopy half-cycle frame.
The files listed in the Set Of Frames (sof-file) must be tagged: VISIR-Echelle-Spectroscopy-file.fits SPEC_CAL_HRG_WCAL VISIR-Quantum-Efficiency-Calibration-file.fits SPEC_CAL_QEFF VISIR-Atmospheric-Emission-Lines-Calibration-file.fits SPEC_CAL_LINES
Additionally, a bad pixel map with a PRO.CATG of SPEC_BPM may be added to the Set Of Frames with tag: BPM.
- --auto_bpm <bool>
- Automatic detection and correction of bad pixels (bool; default: True). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.auto_bpm [default = True].
- --plot <int>
- 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 visir.visir_old_spc_wcal_ech.plot [default = 0].
- --slit_skew <float>
- Distortion correction: Skew of slit (degrees) (clockwise) (float; default: 0.0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.phi [default = 0.0].
- --spectrum_skew <float>
- Distortion correction: LMR Skew of spectrum (degrees) (counter- clockwise). Not used in High Resolution (float; default: 0.0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.ksi [default = 0.0].
- --vert_arc <float>
- Distortion correction: LR Detector vertical curvature (pixel). Reduced by a factor 4 in MR. Not used in HR A-side. Increased by a factor 115/52 in HR B-side (float; default: 0.0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.eps [default = 0.0].
- --hori_arc <float>
- Distortion correction: LMR Detector horizontal curvature (pixel). Increased by a factor 1.5 in HR A-side. Reduced by a factor 2 in HR B-side (float; default: 0.0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.delta [default = 0.0].
- --orderoffset <int>
- Echelle order offset. The offset is relative to the main order. The allowed range of offsets depend on the selected grism. The offset can never exceed +/-4. If the main order is e.g. 8 an order offset of +1 will cause the recipe to base the data reduction on order 9. With a positive order offset the central wavelength becomes smaller while for a negative order offset the central wavelength becomes larger. (int; default: 0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.orderoffset [default = 0].
- --rl <int>
- Reject leftmost columns in spectrum extraction, zero means all columns on the left are used. In cross-dispersion mode a (small) negative number may be used (pixel) (int; default: 0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.reject_left [default = 0].
- --rr <int>
- Reject rightmost columns in spectrum extraction, zero means all columns on the right are used. In cross-dispersion mode a (small) negative number may be used (pixel) (int; default: 0). The full name of this option for the EsoRex configuration file is visir.visir_old_spc_wcal_ech.reject_right [default = 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 visir 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 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 visir pipeline are visir_img_dark(7), visir_img_ff(7), visir_img_reduce(7), visir_img_trans(7), visir_old_img_combine(7), visir_old_img_phot(7), visir_old_spc_obs(7), visir_old_spc_obs_ech(7), visir_old_spc_phot(7), visir_old_spc_phot_ech(7), visir_old_spc_wcal(7), visir_old_util_destripe(7), visir_spc_reduce(7), visir_util_apply_calib(7), visir_util_clip(7), visir_util_convert_weight(7), visir_util_detect_shift(7), visir_util_img_std_cat(7), visir_util_join(7), visir_util_qc(7), visir_util_repack(7), visir_util_run_swarp(7), visir_util_spc_std_cat(7), visir_util_spc_txt2fits(7), visir_util_undistort(7)
Lars Lundin <email@example.com>
Please report any problems to firstname.lastname@example.org. Alternatively, you may send a report to the ESO User Support Department <email@example.com>.
This file is part of the VISIR Instrument Pipeline Copyright (C) 2004, 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.
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