CALC_SCUBA2

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CALC_SCUBA2_FCF

Calculate FCFs from SCUBA-2 calibrators

Description:

Calculate the FCF from reduced SCUBA-2 images of calibration sources. Known calibrators will be recognized and the appropriate flux for the current wavelength will be used. Users may also derive FCFs from non-standard sources provided an input flux is given. See the notes and the description of the recipe parameters for further details.

Notes:

The input data should be uncalibrated (units of pW). (Calibrated data files may be restored to an uncalibrated state by using the recipe UNCALIBRATE_SCUBA2_DATA.)
The results of the calculation are printed to the screen and written to two log files, log.fcf which contains the FCFs along with their estimated uncertainties, and log.fit_fcf which contains the parameters derived from the fits to the source.
Fluxes for non-standard sources may be specified by the FLUX_850 or FLUX_450 parameter.
Multiple non-standard sources may be processed by the recipe by appending the source name to the relevant flux. The source name should be in upper case with spaces removed. For example, FLUX_850.DGTAU. If source names are not appended, the same flux will be used for all.
Currently there is no way to specify peak and total fluxes separately for user-provided sources.
Specifying fluxes for multiple sources will generate a warning about unsupported recipe parameters for all the sources not being processed with the current pass through the recipe. These warnings can safely be ignored.

Available Parameters :

The following recipe parameters can be set via the -recpars

option:

APERTURE_RADIUS

Radius of aperture (in arcsec) for masking out source (otherwise 30 arcsec).

AUTOPHOTOM

A flag to indicate whether to use KAPPA autophotom for aperture photometry. If not specified, autophotom will be used. If false, the aperture photometry is carried out using a less-optimized method. Leaving this parameter as the default is highly recommended.

AUTOPHOTOM_INNER

Scale factor (in terms of aperture radius) for inner radius of annulus used for background estimate (default is 1.25).

AUTOPHOTOM_OUTER

Scale factor for outer radius of annulus used for background estimate (default is 2).

FLUX_450

Source flux density at 450 um in Jy. Source-specific values may be given by appending the source name in upper case with spaces removed.

FLUX_850

Source flux density at 850 um in Jy. Source-specific values may be given by appending the source name in upper case with spaces removed.

KEEPFILES

Flag to indicate whether to delete intermediate files created by the recipe. Default is to keep all files.

LOGFILE

Flag to denote whether to write results to a log file at the end of processing. Default is 1 (write a log file).

Display

No display is used by this recipe.

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