read_fits_spec

synphot.specio.read_fits_spec(filename, ext=1, wave_col='WAVELENGTH', flux_col='FLUX', wave_unit=Unit('Angstrom'), flux_unit=Unit('FLAM'))

Read FITS spectrum.

Wavelength and flux units are extracted from respective TUNITn keywords, from data table (not primary) header. If these keywords are not present, units are taken from wave_unit and flux_unit instead.

Parameters:

filenamestr or file pointer

Spectrum file name or pointer.

ext: int

FITS extension with table data. Default is 1.

wave_col, flux_colstr

Wavelength and flux column names (case-insensitive).

wave_unit, flux_unitstr or Unit

Wavelength and flux units. These are no longer used. Define your units in the respective TUNITn keywords in table (not primary) header.

Deprecated since version 1.4.

Returns:

headerdict

Primary header only. Extension header is discarded.

wavelengths, fluxesQuantity

Wavelength and flux of the spectrum.