vmmoscalib(7)
NAME
vmmoscalib - Determination of the extraction mask
SYNOPSIS
esorex vmmoscalib [OPTIONS] FILE.sof
DESCRIPTION
This recipe is used to identify reference lines on MOS arc lamp
exposures, and trace the spectral edges on the corresponding flat field
exposures. This information is used to determine the spectral
extraction mask to be applied in the scientific data reduction,
performed with the recipe vimos_science. The input arc lamp and flat
field exposures are assumed to be obtained quasi-simultaneously, so
that they would be described by exactly the same instrument
distortions.
A line catalog must be specified, containing the wavelengths of the
reference arc lamp lines used for the wavelength calibration. A grism
table (typically depending on the instrument mode, and in particular on
the grism used) may also be specified: this table contains a default
recipe parameter setting to control the way spectra are extracted for a
specific instrument mode, as it is used for automatic run of the
pipeline on Paranal and in Garching. If this table is specified, it
will modify the default recipe parameter setting, with the exception of
those parameters which have been explicitly modifyed on the command
line.
If a grism table is not specified, the input recipe parameters values
will always be read from the command line, or from an esorex
configuration file if present, or from their generic default values
(that are rarely meaningful). Finally a master bias frame must be input
to this recipe.
In the table below the MOS_CURV_COEFF, MOS_CURV_TRACES, MOS_SPATIAL_MAP
MOS_ARC_SPECTRUM_EXTRACTED, MOS_SPECTRA_DETECTION, MOS_SLIT_MAP, and
MOS_SLIT_LOCATION, are never created in case of long-slit-like data.
The products MOS_SPECTRA_DETECTION, MOS_SLIT_MAP, and
MOS_DISP_RESIDUALS, are just created if the --check parameter is set to
true. The product GLOBAL_DISTORTION_TABLE is just created if more than
12 separate spectra are found in the CCD.
Input files:
DO category: Type: Explanation: Required:
MOS_SCREEN_FLAT Raw Flat field exposures Y
MOS_ARC_SPECTRUM Raw Arc lamp exposure Y
MASTER_BIAS Calib Bias frame Y
LINE_CATALOG Calib Line catalog Y
CONFIG_TABLE Calib Grism table .
Output files:
DO category: Data type: Explanation:
MOS_COMBINED_SCREEN_FLAT FITS image Combined (sum) flat field
MOS_MASTER_SCREEN_FLAT FITS image Normalised flat field
MOS_ARC_SPECTRUM_EXTRACTED FITS image Wavelength calibrated arc
spectrum
MOS_DISP_COEFF FITS table Inverse dispersion
coefficients
MOS_DISP_RESIDUALS FITS image Residuals in wavelength
calibration
MOS_DISP_RESIDUALS_TABLE FITS table Residuals in wavelength
calibration
MOS_DELTA_IMAGE FITS image Offset vs linear wavelength
calib
MOS_WAVELENGTH_MAP FITS image Wavelength for each pixel on
CCD
MOS_SPECTRA_DETECTION FITS image Check for preliminary
detection
MOS_SLIT_MAP FITS image Map of central wavelength on
CCD
MOS_CURV_TRACES FITS table Spectral curvature traces
MOS_CURV_COEFF FITS table Spectral curvature
coefficients
MOS_SPATIAL_MAP FITS image Spatial position along slit on
CCD
MOS_SPECTRAL_RESOLUTION FITS table Resolution at reference arc
lines
MOS_SLIT_LOCATION FITS table Slits on product frames and
CCD
GLOBAL_DISTORTION_TABLE FITS table Global distortions table
OPTIONS
--dispersion <float>
Expected spectral dispersion (Angstrom/pixel) (float; default:
0.0). The full name of this option for the EsoRex configuration
file is vimos.vmmoscalib.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 vimos.vmmoscalib.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 vimos.vmmoscalib.wdegree [default = 0].
--wradius <long>
Search radius if iterating pattern-matching with first-guess
method (pixel) (long; default: 4). The full name of this option
for the EsoRex configuration file is vimos.vmmoscalib.wradius
[default = 4].
--wreject <float>
Rejection threshold in dispersion relation fit (pixel) (float;
default: 1.0). The full name of this option for the EsoRex
configuration file is vimos.vmmoscalib.wreject [default = 1.0].
--wmodelss <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
vimos.vmmoscalib.wmodelss [default = 2].
--wmodemos <long>
Interpolation mode of wavelength solution (0 = no interpolation,
1 = local (slit) solution, 2 = global model) (long; default: 1).
The full name of this option for the EsoRex configuration file
is vimos.vmmoscalib.wmodemos [default = 1].
--ignore_lines <str>
Catalog lines nearest to wavelengths in this list will be
ignored for wavelength calibration (str; default: ). The full
name of this option for the EsoRex configuration file is
vimos.vmmoscalib.ignore_lines [default = ].
--used_linesets <str>
Linesets to use. Valid are standard andextended (see column
LINE_SET in the line catalogue) (str; default: standard). The
full name of this option for the EsoRex configuration file is
vimos.vmmoscalib.used_linesets [default = standard].
--cdegree <long>
Degree of spectral curvature polynomial (long; default: 0). The
full name of this option for the EsoRex configuration file is
vimos.vmmoscalib.cdegree [default = 0].
--cmode <long>
Interpolation mode of curvature solution applicable to MOS-like
data (0 = no interpolation, 1 = fill gaps, 2 = global model)
(long; default: 1). The full name of this option for the EsoRex
configuration file is vimos.vmmoscalib.cmode [default = 1].
--startwavelength <float>
Start wavelength in spectral extraction (float; default: 0.0).
The full name of this option for the EsoRex configuration file
is vimos.vmmoscalib.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
vimos.vmmoscalib.endwavelength [default = 0.0].
--reference <float>
Reference wavelength for slit map (float; default: 0.0). The
full name of this option for the EsoRex configuration file is
vimos.vmmoscalib.reference [default = 0.0].
--slit_ident <bool>
Attempt slit identification.For multiplexing data slit
identification is always performed. Switching it off will cause
systematic errors in the absolute flux calibration if the
FLAT_SED correction is used (see pipeline manual for details)
(bool; default: True). The full name of this option for the
EsoRex configuration file is vimos.vmmoscalib.slit_ident
[default = True].
--s_degree <long>
Polynomial degree for the flat field fitting along spatial
direction (long; default: -1). The full name of this option for
the EsoRex configuration file is vimos.vmmoscalib.s_degree
[default = -1].
--sradius <long>
Smooth box radius for flat field along spatial direction (used
if s_knots < 0) (long; default: -1). The full name of this
option for the EsoRex configuration file is
vimos.vmmoscalib.sradius [default = -1].
--d_nknots <long>
Number of knots in flat field fitting splines along dispersion
direction (long; default: -1). The full name of this option for
the EsoRex configuration file is vimos.vmmoscalib.d_nknots
[default = -1].
--dradius <long>
Smooth box radius for flat field along dispersion direction (if
d_knots < 0) (long; default: 10). The full name of this option
for the EsoRex configuration file is vimos.vmmoscalib.dradius
[default = 10].
--fit_threshold <float>
Threshold percentage for flat spline fitting with respect to the
maximum (float; default: 0.01). The full name of this option for
the EsoRex configuration file is vimos.vmmoscalib.fit_threshold
[default = 0.01].
--line_ident_tol <float>
Tolerance for the ratio of detected lines vs reference lines.
This is used during for arc line identification. (float;
default: 0.05). The full name of this option for the EsoRex
configuration file is vimos.vmmoscalib.line_ident_tol [default =
0.05].
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 vimos pipeline can be downloaded as a
PDF file using the following URL:
ftp://ftp.eso.org/pub/dfs/pipelines/vimos/vimos-pipeline-manual-6.9.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 vimos pipeline are vmbias(7), vmdark(7),
vmdet(7), vmifucalib(7), vmifucombine(7), vmifucombinecube(7),
vmifuscience(7), vmifustandard(7), vmimcalphot(7), vmimflatscreen(7),
vmimflatsky(7), vmimobsjitter(7), vmimobsstare(7), vmimpreimaging(7),
vmimstandard(7), vmmoscombine(7), vmmosobsjitter(7), vmmosobsstare(7),
vmmosscience(7), vmmosstandard(7), vmspcaldisp(7), vmspflat(7),
vmspphot(7)
VERSION
vmmoscalib 3.1.7
AUTHOR
Carlo Izzo <usd-help@eso.org>
BUG REPORTS
Please report any problems to usd-help@eso.org. Alternatively, you may send a report to the ESO User Support Department <usd-help@eso.org>.
LICENSE
This file is currently part of the VIMOS Instrument Pipeline Copyright (C) 2002-2006 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
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
