get_fluxcal_factor¶

sofia_redux.calibration.pipecal_util.get_fluxcal_factor(header, config, update=False, write_history=False)[source]¶

Retrieve a flux calibration factor from configuration.

The returned factor is intended to divide raw image data in order to calibrate it to physical units (Jy/pixel). That is:

calibrated = flux / cal_factor.

The input header may be updated with FITS keywords, via add_calfac_keys, if desired. A history message may also be added to the header, if desired.

Parameters:

headerastropy.io.fits.header.Header: The FITS header to update.
configdict-like: Calibration configuration values, as produced by pipecal.pipecal_config.pipecal_config.
updatebool, optional: If set, calibration keywords will be updated.
write_historybool, optional: If set, and update is also True, a history message will be added to the header.

Returns: