Take a series of standard-star observations and extract and file a standard-star spectrum. This recipe is designed for use when the star has been offset within the field of the IFU (similar to offsetting along the slit in conventional spectroscopy). The frames are subtracted in pairs, giving a positive and negative spectrum. The two spectra are extracted using optimal extraction and averaged. The resulting spectrum is divided by a black-body spectrum of the appropriate temperature and filed as a calibration frame.
ORAC-DR -- integral field spectroscopy data reduction