The high-dispersion SI and VD FITS files (SIHI and VDHI, respectively) are the main output data products produced during the image resampling stage. The SIHI contains the geometrically resampled intensity values stored in a FITS primary array, the resampled -flag image corresponding to the intensity data stored as a FITS image extension, the associated starting wavelength, wavelength increment, and predicted and found line positions for every order stored in a FITS binary table extension, and an array of pixels which have been flagged as cosmic rays by the high-dispersion COSMIC_RAY module stored as a FITS image extension. The VDHI contains the summation of all the geometric corrections implemented to perform the single image resampling and gives, for each pixel in LI space, the final x and y coordinate in SI space stored in a FITS primary array. As discussed in Chapter 5 , the raw cross correlation data are retained in a FITS binary table extension of the VDHI.
The following information is written to the HISTORY portion of the high-dispersion image label by the GEOM module: