Calibration Access and Data Handbook
Next: Calling Parameters
The routines reads the aperture radius keywords of the specified
filter (set by CAL State Variable FilterId) from the two CCF components
PSF1DRB and COLORTRANS.
The aperture radii of the CCF PSF1DRB file
are listed in the keywords APERTURE of the PSF extensions of the
relevant filters PSF-FilterId (cf. section 4.5.10).
The aperture radii used during the zero-point definition and the colour
transformation are contained in the keywords APE-FilterId
in the binary extension COLORMAG
of the CCF component COLORTRANS (cf. section 4.5.4).
The keyword values (APERTURE) and (APE-FilterId)
orginating from the PSF-FilterId extension of the PSF1DRB file
and the COLORMAG extension of the COLORTRANS file
are compared and in case
of an agreement the keyword value is returned. In case of
disagreement the routine returns an error.
The call is currently not supported for the grisms.