STAR-SKY is used, it is only for sky subtraction. These regions are not smoothed before the sky is subtracted from the object spectrum. It does not affect any data reduction step since there have been no GO sky observations. 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.