--- name: "vmmoscombine" section: "7" platform: "linux" package: "cpl-plugin-vimos-doc" version: "3.2.3+dfsg-2" release: "Debian 10 (Buster)" platforms: ["linux"] url: "https://new.carta.tech/vmmoscombine" --- # vmmoscombine(7) Combine reduced MOS observations from different OBs. ## NAME vmmoscombine - Combine reduced MOS observations from different OBs. ## SYNOPSIS esorex **vmmoscombine** \[OPTIONS\] FILE.sof ## DESCRIPTION This recipe is used to sum the contributes from a sequence of 2D-extracted spectral frames generated by the recipes vmmosobsstare, vmmosobsjitter, and vmmoscombine itself. The only restriction is that all frames must be obtained with the same mask. Sky subtraction, fringing correction, flat fielding, etc., are not applied, since they had been applied in the previous reduction of each input dataset. Each input image is corrected to airmass zero before the stacking, and for this reason an atmospheric extinction table must always be specified. Optionally a correction for the instrument response can also be applied. Input files: DO category: Type: Explanation: Required:\ MOS\_SCIENCE\_EXTRACTED Product Combined slit spectra Y\ GRISM\_TABLE Calib Grism table Y\ EXTINCT\_TABLE Calib Atmospheric extinction Y\ MOS\_SPECPHOT\_TABLE Calib Response curve . Output files: DO category: Data type: Explanation:\ MOS\_SCIENCE\_REDUCED FITS image Extracted objects spectra\ MOS\_SCIENCE\_FLUX\_REDUCED FITS image Flux calibrated objects spectra\ MOS\_SCIENCE\_EXTRACTED FITS image Combined slit spectra\ OBJECT\_TABLE FITS table Objects spectra identification\ WINDOW\_TABLE FITS table Objects positions in slit The positions of the extracted slit spectra and of the detected objects that they may contain are listed in the window table. If a spectro-photometric table (produced by the recipe vmmosstandard) is specified and a flux calibration is requested, then a MOS\_SCIENCE\_FLUX\_REDUCED image is also created. This image is identical to the MOS\_SCIENCE\_REDUCED, but the spectra it contains are flux calibrated, and expressed in units of erg/cm/cm/s/Angstrom. For more details, please refer to the VIMOS Pipeline User´s Guide. ## OPTIONS - **--StackMethod** *\* Frames combination method (str; default: ´Average´). The full name of this option for the EsoRex configuration file is **vimos.Parameters.stacking.method** \[default = *Average*\]. - **--KSigmaLow** *\* Low threshold for K-sigma clipping method. (float; default: 5.0). The full name of this option for the EsoRex configuration file is **vimos.Parameters.stacking.ksigma.low** \[default = *5.0*\]. - **--KSigmaHigh** *\* High threshold for K-sigma clipping method. (float; default: 5.0). The full name of this option for the EsoRex configuration file is **vimos.Parameters.stacking.ksigma.high** \[default = *5.0*\]. - **--MinRejection** *\* Number of lowest rejected values for rejection method. (int; default: 1). The full name of this option for the EsoRex configuration file is **vimos.Parameters.stacking.minmax.minimum** \[default = *1*\]. - **--MaxRejection** *\* Number of highest rejected values for rejection method. (int; default: 1). The full name of this option for the EsoRex configuration file is **vimos.Parameters.stacking.minmax.maximum** \[default = *1*\]. - **--DetectionLevel** *\* Object detection level in units of sigma. (float; default: 2.0). The full name of this option for the EsoRex configuration file is **vimos.Parameters.detection.sigma** \[default = *2.0*\]. - **--WatershedLevels** *\* 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** *\* 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** *\* 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** *\* 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** \[default = *7*\]. - **--CalibrateFlux** *\* Extracted spectra are flux calibrated. (bool; default: False). The full name of this option for the EsoRex configuration file is **vimos.Parameters.flux.calibration** \[default = *False*\]. 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 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)](/vmbias/7.md), [*vmdark*(7)](/vmdark/7.md), [*vmdet*(7)](/vmdet/7.md), [*vmifucalib*(7)](/vmifucalib/7.md), [*vmifucombine*(7)](/vmifucombine/7.md), [*vmifucombinecube*(7)](/vmifucombinecube/7.md), [*vmifuscience*(7)](/vmifuscience/7.md), [*vmifustandard*(7)](/vmifustandard/7.md), [*vmimcalphot*(7)](/vmimcalphot/7.md), [*vmimflatscreen*(7)](/vmimflatscreen/7.md), [*vmimflatsky*(7)](/vmimflatsky/7.md), [*vmimobsjitter*(7)](/vmimobsjitter/7.md), [*vmimobsstare*(7)](/vmimobsstare/7.md), [*vmimpreimaging*(7)](/vmimpreimaging/7.md), [*vmimstandard*(7)](/vmimstandard/7.md), [*vmmoscalib*(7)](/vmmoscalib/7.md), [*vmmosobsjitter*(7)](/vmmosobsjitter/7.md), [*vmmosobsstare*(7)](/vmmosobsstare/7.md), [*vmmosscience*(7)](/vmmosscience/7.md), [*vmmosstandard*(7)](/vmmosstandard/7.md), [*vmspcaldisp*(7)](/vmspcaldisp/7.md), [*vmspflat*(7)](/vmspflat/7.md), [*vmspphot*(7)](/vmspphot/7.md) ## VERSION vmmoscombine 3.2.3 ## AUTHOR ESO VIMOS Pipeline Team and VIMOS Consortium \ ## 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 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 along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA