The CDBS relations for the FOS reference files and reference tables are described below. These regions are not smoothed before the sky is subtracted from the object -spectrum. This had little or no practical impact as, only a few sky observations were taken, none of which were intended to aid the proposed science. Filter widths used for smoothing the sky or background spectra. The shift in pixels to be applied to the sky spectrum before subtraction.
Dispersion coefficients to generate wavelength scales.
There is one entry for each detector, disperser, aperture, and polarizer combination. GIM correction scale factors used to scale the modeled shift of the spectrum due to the earth's magnetic field. Used to determine the background scattered light. List of OTA focus positions versus time. Used to correct for aperture sensitivity dependent on focus position.