calibrate_flux

ndmapper.lib.gmos.spec.calibrate_flux(*args, **kwargs)

Generate an instrumental sensitivity spectrum in magnitudes from the 1D integrated spectrum of a spectrophotometric standard star.

Parameters:

inputs : DataFileList or DataFile

Input images, containing the 1D spectrum of a spectrophotometric standard star. Usually there will just be one input and output, but multiple files are accepted.

out_names : str-like or list of str-like, optional

Names of output sensitivity spectra. If None (default), the names of the DataFile instances returned will be constructed from those of the input files, with ‘_sens’ appended.

reference : str or None, optional

The name of a text file containing tabulated fluxes. This is usually the name of the standard star, in lower case. If None, a table matching the OBJECT header keyword will be sought (with any ‘LTT’ prefix abbreviated to ‘L’, to match the “noao$onedstds” convention). The precise bandpasses to be used can be adjusted by editing a copy of this file.

lookup_dir : str or None, optional

Directory name in which to find the reference file with tabulated fluxes, if not the current working directory. IRAF syntax may be used.

See “help gsstandard” in IRAF for more detailed information.

Returns:

outimages : DataFileList

The sensitivity spectra produced by gsstandard.