vmifucalib7

Usage

Overview

This recipe produces the extraction mask, the wavelength calibration, and the relative transmission correction, from a set of flat field and one arc lamp exposures (IFU mode).

Input files:

DO category: Type: Explanation: Required:
IFU_SCREEN_FLAT Raw Flat field Y
IFU_ARC_SPECTRUM Raw Arc spectrum .

LINE_CATALOG Calib Arc line catalog .

MASTER_BIAS Calib Master bias Y
IFU_IDENT Calib Fiber identification .

CCD_TABLE Calib Bad pixel table .

Output files:

DO category: Data type: Explanation:
IFU_MASTER_SCREEN_FLAT FITS image Stack of all raw flat fields
IFU_ARC_SPECTRUM_EXTRACTED FITS image Extracted arc spectra
IFU_FLAT_SPECTRUM_EXTRACTED FITS image Extracted flat field spectra
IFU_TRACE FITS table Extraction mask
IFU_IDS FITS table Wavelength calibration
IFU_TRANSMISSION FITS table Transmission correction

An arc spectrum exposure may not be specified in input, but in that case no wavelength calibration nor fiber relative transmission correction will be computed, and further reduction of associated scientific data will not be possible; the only products in this case will be the stack of all the input raw flat field exposures, and the extraction mask. If the arc spectrum exposure is specified in input, then also a line catalog must be given. The fiber identification table, if given, ensures that all spectra will be safely identified and assigned to the correct spatial position, but in most cases it will be possible to reduce the data even without specifying this table in the input SOF. A CCD table must be specified only if a bad pixel cleaning is requested.

For more details, please refer to the VIMOS Pipeline User´s Guide.

Options

--AllowSingleFrames <bool>

Flat fields combination method is ignored. (bool; default: True). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.singleframes [default = True].

--StackMethod <str>

Flat fields combination method. (str; default: ´MinMax´). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.method [default = MinMax].

--KSigmaLow <float>

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 <float>

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 <int>

Number of lowest rejected values for rejection method. (int; default: 0). The full name of this option for the EsoRex configuration file is vimos.Parameters.stacking.minmax.minimum [default = 0].

--MaxRejection <int>

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].

--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].

--CleanBadPixel <bool>

Bad pixel correction on master flat field. (bool; default: False). The full name of this option for the EsoRex configuration file is vimos.Parameters.badpixel.clean [default = False].

--ApplyTransmission <bool>

Apply transmission correction to extracted arc lamp spectra (bool; default: True). The full name of this option for the EsoRex configuration file is vimos.Parameters.apply.transmission [default = True].

--MaxIdsRms <float>

Maximum tolerated RMS of residuals in IDS fit (float; default: 2.0). The full name of this option for the EsoRex configuration file is vimos.Parameters.ids.maxrms [default = 2.0].

--LineIdent <str>

Arc line identification method. (str; default: ´Blind´). The full name of this option for the EsoRex configuration file is vimos.Parameters.line.ident.method [default = Blind].

--MaxTraceRejection <int>

Maximum percentage of rejected positions in fiber spectra tracing (int; default: 33). The full name of this option for the EsoRex configuration file is vimos.Parameters.trace.failed [default = 33].

--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].

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.

Version

vmifucalib 4.1.7