vmmosstandard - Reduce a MOS standard star exposure.
esorex vmmosstandard [OPTIONS] FILE.sof
This recipe is used to calibrate and extract a standard star
spectrum obtained in MOS mode, and compare it with a catalog spectrum to
obtain the efficiency and the response curves.
Input files:
DO category: Type: Explanation: Required:
MOS_STANDARD Raw Science exposure Y
MASTER_BIAS Calib Master bias Y
EXTINCT_TABLE Calib Atmospheric extinction Y
STD_FLUX_TABLE Calib Standard star fluxes Y
MASTER_DARK Calib Master dark .
MOS_MASTER_SCREEN_FLAT Calib Normalised flat field .
EXTRACT_TABLE Calib Extraction table .
GRISM_TABLE Calib Grism table Y
CCD_TABLE Calib Bad pixel table .
Output files:
DO category: Data type: Explanation:
MOS_STANDARD_REDUCED FITS image Extracted spectrum
MOS_STANDARD_EXTRACTED FITS image Sky subtracted slit spectra
MOS_STANDARD_SKY FITS image Sky slit spectra
MOS_STANDARD_SKY_EXTRACTED FITS image Extracted sky spectrum
OBJECT_TABLE FITS table Objects spectra identification
WINDOW_TABLE FITS table Objects positions in slit
MOS_SPECPHOT_TABLE FITS table Efficiency and response curves
The standard star spectrum is calibrated and extracted as
described for the recipe vmmosobsstare. The extracted spectrum is compared
to catalog fluxes of the same star to obtain the efficiency curve and the
response curve to use for flux calibration. For this comparison the
extracted spectrum is converted into electrons/sec/Angstrom. The catalog
fluxes, as well as the atmospheric extinction factors, are remapped to the
same wavelength bins of the extracted spectrum. After removing the effect of
the atmospheric extinction (i.e., correcting the extracted spectrum to
airmass zero), the response curve is derived as the ratio between the
catalog spectrum and the calibrated spectrum.
The efficiency curve is obtained by dividing the extracted
spectrum in electrons/sec/Angstrom by the the catalog fluxes converted from
erg/cm/cm/s/Angstrom to photons/s/Angstrom (at 100% efficiency each photon
would correspond to one electron).
For more details, please refer to the VIMOS Pipeline User´s
Guide.
- --BiasMethod
<str>
- Bias removal method. (str; default: ´Zmaster´). The full
name of this option for the EsoRex configuration file is
vimos.Parameters.bias.removing.method [default =
Zmaster].
- --SkyMethod
<str>
- Sky level determination method. (str; default: ´Median´).
The full name of this option for the EsoRex configuration file is
vimos.Parameters.sky.method [default = Median].
- --PolyOrder
<int>
- Degree of polynomial used when the SkyMethod is set to Fit. (int; default:
0). The full name of this option for the EsoRex configuration file is
vimos.Parameters.sky.order [default = 0].
- --SkyKSigmaLow
<float>
- Low threshold for K-sigma rejection in sky fitting. (float; default: 3.0).
The full name of this option for the EsoRex configuration file is
vimos.Parameters.sky.ksigma.low [default = 3.0].
- --SkyKSigmaHigh
<float>
- High threshold for K-sigma rejection in sky fitting. (float; default:
3.0). The full name of this option for the EsoRex configuration file is
vimos.Parameters.sky.ksigma.high [default = 3.0].
- --Fuzz
<int>
- Extra pixels from expected position of spectrum edge in extraction. (int;
default: 5). The full name of this option for the EsoRex configuration
file is vimos.Parameters.extraction.fuzz [default = 5].
- --SlitMargin
<int>
- Number of excluded pixels at slit ends in object search or in sky level
determination. (int; default: 2). The full name of this option for the
EsoRex configuration file is vimos.Parameters.detection.exclude
[default = 2].
- --LineWidth
<int>
- Size of spectrum to extract around any skyline. (int; default: 16). The
full name of this option for the EsoRex configuration file is
vimos.Parameters.sky.linewidth [default = 16].
- --DetectionLevel
<float>
- Object detection level in units of sigma. (float; default: 10.0). The full
name of this option for the EsoRex configuration file is
vimos.Parameters.detection.sigma [default = 10.0].
- --WatershedLevels
<int>
- Number of levels in the watershed method in object detection. (int;
default: 32). The full name of this option for the EsoRex configuration
file is vimos.Parameters.detection.levels [default =
32].
- --WatershedFraction
<float>
- Flux fraction to use in watershed. (float; default: 0.01). The full name
of this option for the EsoRex configuration file is
vimos.Parameters.detection.fraction [default = 0.01].
- --MinObjectSize
<int>
- Minimal size for an object candidate to be considered an object. (int;
default: 2). The full name of this option for the EsoRex configuration
file is vimos.Parameters.detection.minsize [default =
2].
- --MaxObjectSize
<int>
- Maximal size for an object candidate for not trying deblend into sub-
objects. (int; default: 7). The full name of this option for the EsoRex
configuration file is vimos.Parameters.detection.maxsize [default =
7].
- --CleanBadPixel
<bool>
- Bad pixel correction on MOS science exposure. (bool; default: True). The
full name of this option for the EsoRex configuration file is
vimos.Parameters.badpixel.clean [default = True].
- Use 1D Horne extraction. (bool; default: False). The full name of this
option for the EsoRex configuration file is
vimos.Parameters.extraction.optimal [default = False].
- --ModelSlit
<bool>
- Model wavelength solution within each slit. (bool; default: True). The
full name of this option for the EsoRex configuration file is
vimos.Parameters.slit.model [default = True].
- --ModelSlitOrder
<int>
- Order of polynomial for wavelength solution modeling within each slit.
(int; default: 0). The full name of this option for the EsoRex
configuration file is vimos.Parameters.slit.order [default =
0].
- --UseSkylines
<bool>
- Use sky lines to refine the wavelength calibration (bool; default: True).
The full name of this option for the EsoRex configuration file is
vimos.Parameters.sky.align [default = True].
- --ResponseOrder
<int>
- Order of the polynomial used to smooth the instrument response curve.
(int; default: 5). The full name of this option for the EsoRex
configuration file is vimos.Parameters.response.order [default =
5].
- --ReduceAnyFrame
<bool>
- Reduce any frame. (bool; default: False). The full name of this option for
the EsoRex configuration file is vimos.Parameters.reduceall
[default = False].
- --ComputeQC
<bool>
- Compute QC1 parameters (bool; default: True). The full name of this option
for the EsoRex configuration file is
vimos.Parameters.quality.enable [default = True].
- --SelectSlit
<int>
- Slit containing the standard star. (int; default: 0). The full name of
this option for the EsoRex configuration file is
vimos.Parameters.slit.select [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 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 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 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), vmmoscalib(7),
vmmoscombine(7), vmmosobsjitter(7), vmmosobsstare(7),
vmmosscience(7), vmspcaldisp(7), vmspflat(7),
vmspphot(7)
ESO VIMOS Pipeline Team <usd-help@eso.org>
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>.
This file is part of the VIMOS Instrument Pipeline Copyright (C)
2002-2005 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.
You should have received a copy of the GNU General Public License
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