Calstis6: Extraction of 1-D Spectra in the STIS Calibration Pipeline

This report updates and extends the discussion of STIS ISR 97-02 on the extraction of 1-D spectra performed by calstis6 in the STIS calibration pipeline. Calstis6 processes flatfielded, 2-D science images to produce one-dimensional spectra using an unweighted extraction algorithm. The resultant flux- and wavelength-calibrated spectra are stored in 3-D binary tables.